HomeMy WebLinkAbout01292013 City Council Work Session Notes - City Interconnect Policy WORK_ SESSION NOTES ONVre0
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H _/ Application for Interconnection of
E /: Alternative Power Generation
A Touchstone Energy'Cooperative
Member Name: Member Number:
Federal Tax ID No. or Social Security No.:
Contact Person:
Address:
City: State: Zip Code:
Phone: Fax: E-mail Address:
Alternate Contact Phone:
Location of Proposed Project(legal description):
Wind Turbine:
Wind Turbine Manufacturer: Model No.:
Rated Power Output, Watts: at m.p.h Wind Speed.
Inverter Manufacturer: Model No.:
UL 1741 "Utility Interactive"Listed: 0 Yes ❑No
IEEE 1547 Compliant: ❑Yes ❑No
Solar PV Type:
Quantity of Solar Panels: x Nominal Rating Watts(each) = Total Wattage
Solar Panel Manufacturer: Model No.:
Type of Array Mounting: 0 Fixed 0 Tracking
Inverter Manufacturer: Model No.:
UL 1741 "Utility Interactive"Listed: ❑Yes 0 No
IEEE 1547 Compliant: ❑Yes ❑No
HEA Form#0037 1 TA 310-32 May 1,2010
Other Qualified Alternative Energy Generator:
Describe:
Member Signature: Date:
Title:
Please direct all inquiries and return this application to Homer Electric Association,Inc. before
purchasing and installing a Alternative Power Generator:
Brad Hibberd
Phone: 907-283-2318
Homer Electric Association, Inc. Fax: 907-283-7122
280 Airport Way E-mail: bhibberdAhomerelectric.com
Kenai AK 99611 Web Site: www.homerelectric.com
For HEA Use Only
Member #:
ApproN Date:
Title:
HEA Form#0037 2 TA 310-32 May 1,2010
Homer Electric Association Requirements For The Individual Consumers of the latest Institute of Electrical and Electronics Engineers
Interconnection of Member-Owned Alternative Power Installations (IEEE) Standard 519, IEEE Recommended Practices and Requirements for
Harmonic Control in Electrical Power Systems. In addition to meeting all
requirements identified in this document,the Interconnection shall comply with HEA's
This document states the minimum requirements to ensure the safe and reliable Rules and Regulations, and latest IEEE 1547, IEEE Standard Conformance Test
operation of Member-owned alternative power interconnected generating facilities(25 Procedures for Equipment Interconnecting Distributed Resources with Electric
kW or smaller in size — hereafter "Interconnection(s)") that will be eligible to be Power Systems.
connected and operated in parallel with the Homer Electric Association Inc.(HEA)utility
system. Member-owned generating facilities that are fueled by: (a)wind;(b)solar 5. Testine. Prior to initial energization of the Interconnection, an inspection
energy;(c)geothermal energy;(d)landfill gas;(e)wave or tidal action;(f)gas produced and/or tests will be performed by both the interconnecting Member and HEA personnel.
during the treatment of wastewater;(g)hydropower;or(h)biomass energy based on solid The purpose of the inspection and testing will be to determine if the generator and related
organic fuels from wood or field residues or dedicated energy crops that do not include equipment of the Interconnection meets the minimum requirements described by IEEE
wood pieces that have been treated with chemical preservatives,are eligible to become 1547, IEEE 519, and UL 1741, Underwriter Laboratories Inc.. Standard for
interconnected. Inverters, Converters, and Interconnection System Equipment for Use With
Distributed Energy Resources. Based on the inspection,HEA may elect to accept the
Interconnections shall not be fueled by nor connected to any non-qualified installation and energize the Interconnection. In the event that discrepancies are noted
alternative energy sources. between the certified equipment and drawings previously provided to HEA and the
Member's system inspected by HEA,re-testing may be required. The Member shall be
1. Consumer Information. In order to proceed with an Interconnection,the solely responsible for all costs associated with any re-testing.
Member must complete an Application for a New/Rework of Electrical Service and an
Interconnection Application. The Member shall also provide equipment specifications, 6.Association Inspection and Member Maintenance Records. The Member shall
protection arrangements and design drawings to HEA for review. maintain the Interconnection in good working order. The Interconnection(i.e.,generator
and associated equipment) is subject to inspection and re-testing by HEA upon
2. Compliance with Codes and Standards. Interconnection customers shall reasonable notice each year after the unit is placed in service. The Member will assume
comply with all applicable local,state and federal codes such as building codes,National full responsibility for the routine maintenance of the Interconnection and associated
Electric Code(NEC),and National Electrical Safety Code(NESC)for the installation of protective devices. The Member shall maintain accurate records of all maintenance
an interconnection. Once operating,HEA reserves the right to require the Member,at the activities performed. These records shall record the date and time,the person(s)who
Member's expense, to provide corrections, modifications, or additions to the performed the activities,and a brief description of the work. These records shall be made
Interconnection as required or recommended by government or industry regulations and available to HEA for inspection at all times upon reasonable notice to the Member.
standards. HEA will provide written documentation of the necessary changes and a time Failure to comply may result in the disconnection of the equipment or additional testing
frame to complete. If the Member fails to comply with the changes in the specified time as outlined in N5 above. The Member is solely responsible for all costs associated with
frame,HEA will open and lock the Interconnection. any inspections required.
3.Placement of Member-owned Interconnection. To maintain the existing HEA 7. Visible. Lockable Disconnect Switch. An accessible, visible, lockable
distribution system's power quality and reliability, only one Interconnection per disconnect switch is to be provided by the Member which is lockable in the open position
distribution transformer will be authorized. This requirement may be waived by HEA only. This switch must be appropriately labeled,when locked in the open position for
when HEA,in its sole discretion,deems it appropriate under the circumstances. any of the following conditions,may be unlocked only by HEA operating personnel.
HEA will lock the switch in the open position under the following circumstances:
4. Power Quality and Reliability. The Interconnection with the HEA utility
system shall not cause any reduction in the quality and reliability of service provided to (a)If it is necessary for the protection of line crew personnel when working
other HEA Members. There shall be no generation of abnormal voltages or voltage on de-energized circuits during a system emergency;
fluctuations,and the harmonic content of the Interconnection output must be below that
level which would cause interference with other Member loads,other utilities,or HEA (b)If inspection of the Interconnection reveals a hazardous condition or a
facilities and equipment lack of proper maintenance;
To minimize interference,HEA requires the Interconnection to meet the power quality (c)If the Interconnection interferes with other Members,other utilities,or
standards presented in accordance with Section 10, Recommended Practices for with the operation of HEA's distribution system;
(d)If HEA determines that the Interconnection has generated power from a 13. Synchronization. The Interconnection must be synchronized with HEA's
non-qualified alternative energy resource;or utility system at all times and the Member shall be responsible for the cost and
maintenance of all synchronization equipment.
(e)For general maintenance of HEA's distribution system.
14.Automatic Disconnection and Time-Delayed Automatic Reconnection. The
HEA will provide reasonable notice, as determined at HEA' sole discretion, before Interconnection shall be designed to automatically disconnect and lockout when HEA's
locking the switch open for general maintenance as provided in condition(e)above. service is interrupted for any reason. Automatic reconnection of the Interconnection to
HEA's utility system shall be done only on Hot-Bus/Hot-Line/Sync-Check.
8.Metering/Billing. HEA shall install and maintain a kilowatt-hour meter,
or meters at the Interconnection, capable of registering the bi-directional flow of An automatic reclose of the Interconnection breaker(or interrupting device)
electricity at the Point of Interconnection at a level of accuracy that meets all applicable is permitted once utility power has been restored a minimum of 5 minutes.
standards,regulations,and statutes. The meter(s)may measure such parameters as time
of delivery,power factor,voltage and such other parameters as HEA shall specify in its
sole discretion. The Member shall provide space for metering equipment as specified by 15. Single Phasing Protection. The Member is advised that a phase-unbalance
HEA with the location of the meter(s)to be approved by HEA. The Member is solely disturbance on HEA's utility system can result in overheating of the Interconnection. A
responsible for all costs associated with the purchase,installation,and maintenance of all negative-sequence-type relay(current or voltage)could be necessary to initiate tripping
equipment required by HEA in order to properly meter the Interconnection. under phase-unbalance conditions and may also be used to block closing of the automatic
disconnecting device if HEA's utility system is single-phased.
All energy a Member receives from HEA is purchased by the Member at the applicable
HEA tariff rate found in HEA's Rules and Regulations. When a Member's 16. Generating Facility Protection. The Member is fully responsible for the
Interconnection delivers energy to HEA, HEA's purchase price of the energy is protection of the generator and all of its associated equipment. Protection should be
documented in Schedule 9 of those regulations. provided for the Member's own equipment failures, faults and other disturbances on
HEA's utility system.
9.Nominal Voltages and Phasing. The generator nameplate voltage should be the
same as one of the nominal voltages supplied by HEA. The nominal voltages are 17.Fault Detection and Automatic Isolation. To prevent an Interconnection from
120/240 V single-phase, 120/208 V three-phase, and 277/480 V three-phase. If the supplying current to a fault on HEA's utility system, the Interconnection shall be
generator nameplate voltage is different from HEA's nominal voltages,the Member must equipped to provide isolation from HEA's utility system for any fault occurring on
supply a dedicated generator transformer that will provide the required nominal voltage. HEA's utility system. The automatic isolation shall be done prior to the Association
The required transformer connection, unless otherwise specified, is grounded wye- breaker(or recloser)reclosing and within a reasonable period of time,typically less than
grounded wye. two seconds(120 cycles). The Member is solely responsible for all costs associated with
the purchase,installation,and maintenance of all equipment required by HEA in order to
10.Fault Current Increase and Upgrading Equipment. In general,installation of a properly isolate the Interconnection from HEA's utility system for any fault occurring on
new generator will increase the fault current level at the Member's electrical facility. the HEA system.
This may require upgrading some of the Member's equipment. The Member will assume
full responsibility of upgrading Member's own equipment. 18.Under/Over Voltage Relay. To prevent any hazardous operating conditions,
the Interconnection shall be isolated from HEA's utility system for any under-voltage
I I.Starting as Induction Motor. In general,induction generators start as motors; (lower than 90 percent of nominal voltage)and over-voltage conditions(higher than 110
also,synchronous generators may be designed to start as motors. The Member-owned percent of nominal voltage)within two seconds(120 cycles). The Member is solely
generator starting as a motor shall meet the motor starting requirements prescribed by responsible for all costs associated with the purchase,installation,and maintenance of all
HEA. HEA may require the Member to provide,at Member's own expense,special or equipment required by HEA in order to properly isolate the Interconnection from HEA's
additional starting equipment utility system for any voltage level described above.
12.Generating Facility Grounding. There are additional safety concerns that shall 19. Under/Over Frequency Relay. To prevent any hazardous operating
be addressed when considering circuit grounding of the Interconnection interconnected to conditions, the Interconnection shall be capable of disconnecting the Member's
HEA's utility system. To ensure proper grounding of the generating facility,the Member generation source from HEA's utility system for any over-frequency and under-frequency
shall follow all applicable national, state, and local codes regarding grounding for conditions exceeding 60.5 Hz or below 59.5 Hz within 50 milliseconds(6 cycles). The
applicable generating installations. Member is solely responsible for all costs associated with the purchase,installation,and
s
maintenance of all equipment required by HEA in order to properly isolate the
Interconnection from HEA's utility system for any frequency deviation described above.
20.Dedicated Distribution Transformer. To ensure reliable service to other HEA
Members and to minimize all possible problems for other HEA Members, the
Interconnection shall be interconnected to the HEA utility system through a dedicated-to-
single-Member distribution transformer. This requirement may be waived by HEA when
HEA, in its sole discretion, deems it appropriate under the circumstances. Any cost
associated to achieve dedicated-to-single-Member service shall be the Member's sole
expense.
21. Single-phase Generating Facility on Three-phase Distribution Transformer.
In general,a Member-owned single-phase generating facility greater than 10kW shall not
be allowed to be connected to an HEA three-phase distribution transformer. This
requirement may be waived by HEA on a case-by-case basis,when it deems such waiver
appropriate,in its sole discretion.
22.Surge Protection. The Member is responsible for the protection of Member's
Interconnection from transient surges initiated by lighting, switching,or other system
disturbances.
23.Future Modification or Expansion. Any future modification or expansion of
the Interconnection will require a separate engineering review and approval by HEA.
24. Reservation of Rights. HEA reserves the right to require, in its sole
discretion, additional Interconnection requirements for interconnection generating
facilities in order to preserve the safety and integrity of HEA's utility system.
Sponsored by: Hunt
Introduction: September 10, 2012
Introduction Postponement: September 24, 2012)
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF SEWARD,
ALASKA,AMENDING TITLE 14 OF THE CITY'S CODE OF ORDINANCES
TO PROVIDE FOR INTERCONNECTION OF SMALL RENEWABLE
ENERGY SOURCES TO THE CITY'S ELECTRICAL DISTRIBUTION
SYSTEM
WHEREAS, the city council encourages the development and use of alternative energy
production; and
WHEREAS, the interconnection with the city's electrical distribution system should be
allowed,provided that alternative power sources do not adversely affect the city's system or delivery
of power to other electric customers, and
WHEREAS, the city council wishes to allow alternative energy that is safe to users, the
public, and electric utility employees.
NOW THEREFORE,THE CITY COUNCIL OF THE CITY OF SEWARD,
ALASKA, HEREBY ORDAINS that:
Section 1. Seward City Code Section 14.01.015 Definitions is amended as follows:
Strikeout=Delete Bold=New
14.01.015. - Definitions.
Unless the context specifically indicates otherwise, the meaning of terms used in this title
shall be as follows:
Alternative power source. Means electrical generation fueled by renewable resources
such as wind, solar, geothermal, biomass, or water. An alternative power source does not
include fossil fuel generation.
Applicant. Means a person, including a corporation, partnership, association, and
governmental unit or agency, who requests utility service or the extension of utility facilities or
interconnection under these provisions and who may be synonymous,as circumstances permit,with
"developer," "owner," "contractor," "builder," and similar terms associated with the improvement
---c
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
and development of real property and the construction of buildings and related improvements and
their heirs, successors.
Application for interconnection.Means the application for interconnection of alternative
power source that must be completed by any customer wishing to interconnect to the city's
electrical distribution system as an independent power producer.
BOD(denoting biochemical oxygen demand). Means the quantity of oxygen utilized in the
biochemical oxidation of organic matter under standard laboratory procedure in five days at 20
degrees Centigrade,expressed in milligrams per liter.
Building drain. Means that part of the lowest horizontal piping of a drainage system which
receives the discharge from soil,waste,and other drainage pipes inside the walls of the building and
conveys it to the building sewer, beginning five feet (1.5 meters) outside the inner face of the
building wall.
Building sewer. Means the extension from the building drain to the service connection or
other place of disposal.
Certificate of Completion. Means the form completed by the applicant for
interconnection and the electrical inspector having jurisdiction over the installation of the
facilities indicating completion of installation and inspection of the interconnection.
Class A facility. Means non-utility generator installation of 10-kVA output or less,
where the system stiffness ratio is at least 100.
Class B faciliO. Means non-utility generator installation with an output of between 10-
kVA and 100-kVA,where the system stiffness ratio is at least 50.
Class Cfacility. Means non-utility generator installation with an output of between 100-
kVA and 1000-kVA,where the system stiffness ratio is at least 30.
Class D facility. Means non-utility generator installation with an output of between
1000-kVA and 5000-kVA,where the system stiffness ratio is at least 20.
Class of service. Means the type of service rendered by the city to a customer under a
particular rate schedule.
Clean-out. Means a pipe inserted into the sewer extension through which a cleaning device
can be inserted into the sewer extension.
Collection system. Means the system of public sewers to be operated by the city and
designed for the collection of sewage.
Page 2 of 23
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CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
Combined sewer. Means a sewer receiving both surface runoff and sewage.
Commercial service - Demand metered. This classification applies to demand metered
general lighting,incidental power,and other services used by commercial and industrial enterprises
whose demand is equal to or greater than 25 KVA.
Commercial service-Non-demand metered. This classification applies to single phase,non-
demand metered general lighting, incidental power, and other services used by commercial and
industrial enterprises whose demand capacity is less than 25 KW, and by multiple dwelling units
when supplied through one meter. A residential service through which an additional service point
not directly associated with the primary residence is likewise serviced will be billed under this
schedule. Customers will be classified as non-residential unless they are clearly a residential
account. The burden of proof will be on the customer.
Commercial user. Means a person or premises used for commercial or business purposes
which discharges domestic waste,not industrial waste.
Composite. Means the make-up of a number of individual samples so taken as to represent
the nature of sewage or industrial wastes.
Constituents. Means the combination of particles or conditions which exist in the industrial
wastes.
Contribution-in-aid-of-construction. Means that sum of money representing the cost of
making additions or modifications to utility distribution facilities and underground installations,
which the applicant or customer must pay as a condition precedent to installing the facilities
requested, and which becomes the property of the city and is not otherwise subject to refund to the
contributor.
Contributor. Means an individual or entity willing to fund alternative power generation
through voluntary monetary donation(s).
Customer. Means the person, partnership, corporation, or entity in whose name a utility
account is held and the occupant,resident,or tenant of any premises served by a city utility. In those
cases where a utility service is not separately metered to individual tenants in a building, the
landlord/owner shall be considered a customer.
Delivery point. Means the location where city electrical distribution system terminates
its equipment or conductors and at which the customer assumes responsibility for construction
and maintenance of the electrical facilities.
Page 3 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
Demand. Means the maximum rate of delivery of electric energy during a month,measured
in kilowatts (KW)registered over a 15-minute period by a demand meter.
Domestic waste. Means any sewage emanating from residential dwellings or from domestic
activities by or for private citizens having a BOD of less than 250 ppm and/or a total suspended
solids of less than 250 ppm.
Economically feasible. Means an extension of distribution facilities will be considered
economically feasible if anticipated annual revenue from the project will recover all annual costs
plus reasonable margins to provide service to that point, and that this balance of revenue to
costs/margins can reasonably be expected to continue for the service life of the facilities constructed
for the requested service extension.
Electric service. Means the availability of electric energy at the point of delivery for use by
the customer, irrespective of whether electric energy is actually used.
Electrical distribution system. Means all electrical wires,equipment,and other facilities
owned or provided by the city that are used to transmit electricity to customers.
Engineering. Includes the preparation of electric layouts,designs,specifications,and other
drawings and lists associated with electric construction. It also includes, but is not limited to,
making construction estimates, inspecting construction for conformance with design criteria and
specifications, staking,right-of-way acquisition, and similar and related activities necessary to the
technical planning and installation of electric distribution facilities.
Fault. Means the event when one or more electrical conductors contact ground and/or
each other. An electrical system that allows current to travel along an unintended path,often
where very low electrical impedance is encountered.
Garbage. Means all animal and vegetable refuse from food or food preparation, dead
animals,and the accumulation from restaurant grease traps,but not dish water nor wastewater,ice,
salt, and similar materials.
Independent power provider. Means an electrical distribution system customer who has
developed or is developing an alternative power source.
Industrial. This classification applies to electrical services with demand equal to or greater
than 750 KW. Industrial services with demand of equal to or greater than 5,000 KW will be served
by contract only,and only by cost-based rates of those services.
Industrial user. Means a person or premises which discharges sewage having the
characteristics of industrial wastes as distinct from domestic wastes or which has a BOD of 250 ppm
or greater and/or which has a total suspended solids of 250 ppm or greater.
Page 4 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
Industrial wastes. Means the sewage from industrial manufacturing processes, trade, or
business as distinct from domestic waste.
Interconnect facilities. Means the electrical wires,switches,and other equipment used
to interconnect a generating facility to the electric system.
Interconnection. Means the physical connection of a generating facility to the electric
system so that parallel operation may occur.
Interconnection agreement. Means the agreement by the applicant to comply with
standardized terms and conditions governing the interconnection of generating facilities
pursuant to these standards. The interconnection agreement may be modified to accommodate
terms and conditions specific to individual interconnections,subject to the conditions set forth
in this title.
Key box (curb valve, curb cock). Means the shut-off point for water service, which is the
property of the customer.
Mobile home. Means manufactured housing,as defined in section 8.15.110 of this code,built
on a chassis and/or in accordance with Department of Housing and Urban Development standards
contained in Code of Federal Regulations Title 24,Chapter 20. A mobile home shall be construed to
remain a mobile home, subject to all regulations applying thereto, whether or not wheels, axles,
hitch,or other appurtenances of mobility are removed and regardless of the nature of the foundation
required.
Mobile home park Means any parcel, or adjacent parcels of land in the same ownership,
which is used for occupancy by two or more mobile homes. The term does not include camper parks
as defined in section 8.15.110 of this code.
Multiple residential structures. Means any building or collections of buildings having
common walls, containing two or more residential units, which include such common residential
arrangements as apartments,townhouses, row houses, and condominiums.
Natural outlet. Means any outlet into a watercourse, pond, ditch, lake, or other body of
surface water or ground water.
On-site sewage disposal. Means the use of any privy,cesspool,septic tank,or similar facility
for disposal of sewage which is not connected to the collection system.
Parallel operation. Means the synchronous operation of a generating facility while
interconnected with the electrical distribution system.
Page 5 of 23
•
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
Permanent electrical service. Means service entrance and metering equipment installed at a
given location with intent to remain for the useful service life of the city's electrical facilities
constructed for that service. The equipment will be mounted on a city pole,or customer's building,
or other structure on a permanent, non-moveable foundation. The city reserves the right of final
determination of whether a service will be classified permanent. All facilities will be designed and
installed in accordance with applicable codes,standards,and practices of the industry for the class of
service offered.
pH Shall mean the logarithm of the reciprocal of the weight of hydrogen ions in grams per
liter of solution.
Point of delivery. Is that predetermined location where the city terminates its equipment or
conductors and connects with the customer's equipment or conductors.
Premises. Means the real property of the customer in a single location being served by the
city.
Pretreatment. Means that physical treatment given to sewage prior to discharge into the
collection system,or those processes utilized for this purpose.
Primary service. Means the conductors and equipment necessary to supply the customer with
electricity at the available primary voltage above 480 volts.
Primary voltage. Means the voltage supplied to the high voltage side of distribution
transformers, which include three-phase service 7,200/12,470 and 14,400/24,900.
Properly shredded garbage. Means the remnants from the preparation, cooking, and
dispensing of food that have been shredded to such a degree that all particles will be carried freely
under the flow conditions normally prevailing in the collection system,with no particle greater than
one-half inch(1.27 centimeters) in any dimension or overall.
Public sewer. Means any sewer collection system operated by or under the authority of the
city.
Public works department. Means the City of Seward public works department.
Raceway. Means a channel for holding wires,cables,or busbars,which is designed expressly
and used solely for that purpose.
Receiving waters. Means those natural outlets into which sewage is discharged.
Refuse. Means all garbage,rubbish,and waste material.
Page 6 of 23
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CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
Residential or domestic user. Shall mean a person or premises who discharges an average
normal volume of domestic waste to the collection system.
Residential service. Means the providing of a utility to a single-family dwelling. Except for
"home occupations" as defined in sections 15.10.140 and 15.10.240 of this Code, activities of a
nature requiring a business license, advertising, or whose profits and expenses are shown against
federal income taxes will be classified as "commercial."
Rubbish. Means tree and plant trimmings, paper products, rags, rubber, carpets, clothing,
straw packing,packing materials,furniture,and all other kinds of combustible waste material which
ordinarily accumulates in the operation of a household or business. "Rubbish" does not include
manure or waste from any yard or stable.
Sanitary sewer. Means a sewer which carries sewage and to which storm, surface, and
ground waters are not intentionally admitted.
Secondary service. Means service at available voltage of 480 volts or less.
Secondary voltage. Means the voltage for delivery directly to the service entrance of the
customer, i.e.,the low voltage side of a distribution transformer (utilization voltage).
Security lights. Means a fixture or fixtures installed to illuminate private homes and areas,
including places and areas to which the public has access but which are privately owned and
controlled.
Service. Means the furnishing of a utility to a given location.
Service connection. Means the pipe and appurtenances required to connect an individual
property or facility to the sanitary sewer. The service connection shall start at the collection system
and terminate at the property line or easement limit and shall not include the building sewer.
Sewage. Means any combination of the water-carried wastes from residences, business
buildings, institutions, and industrial establishments, together with such ground, surface, and
stormwaters as may be present.
Sewage treatment plant. Means any arrangement of devices and structures used for treating
sewage.
Sewage works. Means all facilities for collection, pumping, treating, and disposing of
sewage.
Sewer. Means a pipe or conduit for carrying sewage.
Page 7 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
Slug. Means any individual or combined discharge of water, sewage, or industrial waste
which in concentration of any given constituent or in quantity of flow exceeds,for any period longer
than 15 minutes, more than five times the average 24-hour concentration or flows during normal
operation.
Storm drain and storm sewer. Means a sewer which carries storm and surface waters and
drainage,but excludes sewage and industrial wastes, other than unpolluted cooling water.
Street light. Means a system or fixture of such system,for the illumination of streets,alleys,
and other public places and areas, installed and operated at public expense.
Subdivision. Means a tract or parcel of land divided into two or more lots, sites, or other
divisions according to applicable law.
Suspended solids. Means solids that either float on the surface of or are in suspension in
water, sewage, or other liquids, and which are removable by laboratory filtering.
Tariff. Means the City of Seward Utility Tariffs as approved by the city council and
amended from time to time.
Technical requirements for interconnection. Means the document that contains the
applicable engineering criteria prescribing the technical interconnection, protection, and
metering requirements for any alternative power source to be connected to the electrical
distribution system and may be amended by resolution from time to time. A copy of the
technical interconnection requirements is available from the electric department.
Temporary secondary service. Means service provided on an interim basis during a
construction phase or any other service provided by use of facilities which cannot be reused or
continued as permanent facilities and must be removed when the temporary need has ceased. The
duration of the service will not exceed 180 days.
Thaw wire. Means the wire leading from the water main,parallel with the service line,and
coming up to the ground surface at the key box.
Toxic. Means constituents of sewage which are considered from time to time by the U.S.
Environmental Protection Agency in its listing of NRDC Priority Pollutants Schedule as adversely
affecting facilities or conditions similar to the collection system,the sewage treatment plant,or the
receiving waters.
Waste material. Means broken crockery,glass,wire,ashes,cinders,bottles,tin cans,metals,
and other similar noncombustible waste material resulting from the operation of a household or
business. Discarded vehicle bodies or other bulky or heavy objects,waste material resulting from
Page 8 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
any manufacturing,building,or construction operation,and similar materials shall not be considered
waste material and must be disposed of by the property owner.
Water connection or water service connection. Means that part of the water distribution
system,including pipe and appurtenances,used to conduct water from the water main to a point at or
near the property line of the premises to be served.
Water connection extension. Means that part of the water distribution system extending from
the water connection into the premises served.
Section 2. Seward City Code Title 14,Chapter 15,Article 4 Interconnection to Customer-
Owned Alternate Technology and Fossil Fuel Standby Generation Equipment is amended as follows:
Str-ikeeut=Delete Bold =New
Article 4. -Interconnection to With Customer-Owned Alternat e-ive T and-Fossil-Fuel
Standby Power Source Generation Equipment
14.15.410.—Alternat e-ive Power Source.
The city will permit the interconnection and operation of alternateive power
source facilities - -• . - - -- -• • - - - -• " - -• • -• `'nth
its integrated electrical distribution system upon compliance by the customer with the following
provisions and upon issuance of an interconnection permit by the city. A permit shall be
subject to the customer's compliance with all provisions specified in this Article and signature
on an"Interconnection and Power Purchase Agreement for Independent Power Provider.":
systeffh
The customer shall submit to the city along with his request for
•
maaufeetufefs,
Pave 9 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
previsiens-afe satisfea
{Ord. 504, 1982)
A. Categories. An independent power producer is categorized into four non-utility
facility classes A-D (see definitions).
B. Capacity and transformer limitation. Provided adequate capacity exists on the
electrical distribution system where the alternative power source is to be sited and the
independent power producer complies with all requirements specified in this Article,
interconnection may be permitted. However,interconnection of an alternative power source to
the electrical distribution system is limited to:
1. 1.5%of the minimum demand per substation average retail demand for
the circuit to which the alternative power source is connected and on a first come,first serve
basis, as determined by the electric department,and
2. Total nameplate capacity of 25 kilowatts or less delivered into the
electrical distribution system, and
3. Only one alternative power source per distribution transformer and,in
general, a customer-owned single-phase generating facility greater than 10KW shall not be
allowed to be connected to a three-phase distribution transformer. This requirement may be
Page 10 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
waived by the electric department when the department deems it appropriate under the
circumstances.
C. Independent power producer responsibilities. The independent power producer
shall be responsible for acquiring the site for the project,installing the generating facility,and
complying with all of the applicable requirements set forth in this code, including any
amendments that may be required. The independent power producer shall also be solely
responsible for obtaining all easements, licenses, and relevant permits (building,floodplain,
variance, utility, dig, etc.) of every type, and all costs and expenses of every type or nature,
relating to the permitting, purchase, operation, and maintenance of the alternative power
source.
D. Compliance. The independent power producer shall comply with all applicable
local, state, and federal laws, regulations, and codes, including, but not limited to,
environmental laws, safety standards, building codes, National Electric Code (NEC), and
National Electric Safety Code (NESC) for the construction and installation of an alternative
power source, as well as the technical requirements for interconnection.
E. Right of refusal. The utility manager reserves the right to refuse interconnection
with alternative power source facilities or to limit the number of interconnections with
alternative power source facilities on any single substation circuit if it is determined by the city
that any such interconnection would be harmful or hazardous to its system,its employees,or
other customers. If a proposed interconnection is refused,the city will provide the customer
within three months of the complete application request,written notice of refusal,including a
statement of the reason(s) for the refusal.
F. Unauthorized interconnection. If an unauthorized interconnect is found,the city
will immediately terminate service to those facilities and reconnect the service only when all
conditions of these provisions are satisfied.
14.15.415. Interconnection Requirements, Procedures, and Application Process for
Responding to Inquiries From an Independent Power Producer for an Alternative Power
Source Less Than 25KW.
A. Application.
1. All customers (independent power producers) desiring to build an
alternative power source within the Seward city limits and interconnect with the electrical
distribution system must submit a building permit, and all other applicable permits (i.e.,
floodplain,utility locate/dig,etc.),and"Application for Interconnection." (Available from the
electric department.)
Page 11 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
2. All customers (independent power producers) desiring to build an
alternative power source facility outside the Seward city limits and within the city's electrical
service area must meet all Kenai Peninsula Borough requirements and will need to submit an
application for interconnection in a form provided by the electric department,an independent
power producer permit certification, and obtain a dig/utility location permit from the city.
The certification shall be provided upon the independent power provider's permit certification
form available from the electric department.
3. For existing permitted facilities within and outside the Seward city limits
seeking to connect to the electrical distribution system,the independent power producer need
only submit the application for interconnection.
4. The application for interconnection must be submitted at least 90 days
prior to the date on which the customer intends to make any connection in any way to the
electric circuitry common to the electrical distribution system.
5. The application for interconnection and building permit, if required,
must be accompanied with complete documentation of the intended alternative power source,
including, but not limited to: site location, schematics, wiring diagrams, performance
specifications,descriptions of energy storage devices,circuit protection equipment,regulating
equipment,automatic disconnect equipment,and any other proprietary device provided by the
equipment manufacturers.
6. The electric department will provide the independent power producer
applicant a copy of the current technical requirements for interconnection outlining the
equipment requirements. All applicable provisions of the technical requirements for
interconnection must be satisfied before an interconnection permit can be issued.
7. The electric department will provide the independent power producer
applicant a copy of the interconnection and power purchase agreement for independent power
provider for interconnection,power purchases,and power sales. Prior to interconnection and
power purchase being authorized,the independent power producer applicant must return a
signed agreement.
8. A non-refundable interconnection application fee may be required by the
electric department based on the size of the alternative power source facility.
9. All interconnection requests pursuant to this Section will be reviewed by
the city for compliance. If the electric department finds the application does not comply,the
application will be rejected and the electric department shall provide the applicant written
notification stating the reason(s) for rejecting the application.
Page 12 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
B. Alternative power source protective equipment. The city reserves the right to
require additional interconnection requirements for an alternative power source in order to
preserve the safety and integrity of the electrical distribution system.
1. The independent power producer is fully responsible for the protection of
the alternative power source and all associated equipment.
2. The independent power producer must provide protection for equipment
failures, faults, and other disturbances on the electrical distribution system.
3. The independent power producer is responsible for the protection of the
alternative power source from transient surges initiated by lightning, switching, or other
system disturbances.
4. The independent power producer is responsible for all costs associated
with the purchase,installation,and maintenance of all equipment required by the city in order
to properly isolate the alternative power source from the electrical distribution system for any
fault occurring on the electrical distribution system.
5. The alternative power source shall be equipped to provide isolation from
the electrical distribution system for any fault occurring. The automatic isolation shall be done
prior to the city's breaker(or recloser) reclosing and within two seconds (120 cycles).
6. The alternative power source shall be isolated from the electrical
distribution system for any under-voltage(lower than 90 percent of nominal voltage)and over-
voltage conditions (higher than 110 percent of nominal voltage) within two seconds (120
cycles).
7. The alternative power source shall disconnect from the electrical
distribution system for any over-frequency and under-frequency conditions exceeding 60.5 Hz
or below 59.5 Hz within 50 milliseconds (3 cycles).
8. The independent power producer is responsible for all costs associated
with the purchase,installation,and maintenance of all equipment required by the city in order
to properly isolate the alternative power source from the electrical distribution system for any
voltage or frequency deviation described in subsections 5,6, and 7 above.
9. The alternative power source requirements, to ensure reliable service,
may be waived by the city when the utility manager deems it appropriate under the
circumstances. Any cost associated to achieve dedicated-to-single-customer service shall be at
the independent power producer's sole expense.
Page 13 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
C. Potential special or additional equipment requirements. The electric department
reserves the right to require additional protective systems functional testing (i.e., circuit
breakers, switches, disconnect devices, protective relays, etc.) to ensure the safe and efficient
operation of the electrical distribution system is not jeopardized by interconnection with the
alternative power source.
1. The alternative power source generator nameplate voltage and frequency
shall match the power characteristics supplied by the city. It is the responsibility of the
independent power producer to match the voltage and frequency of the power supplied by the
city.
2. The city may require the independent power producer to provide,at the
independent power producer's own expense, special or additional starting equipment.
3. The independent power producer shall, to ensure proper grounding of
the alternative power source, follow all applicable national, state, and local codes regarding
grounding for applicable generating installations.
4. It is the independent power producer's responsibility to purchase,
operate,and maintain all necessary safety equipment to keep the electrical distribution system
from overheating and other harm. The independent power producer shall pay for all repairs
to the electrical distribution system caused by an alternative power source overheating.
D. Inspection and initial safety testing requirements.
1. The independent power producer shall complete all required
interconnection safety-related testing of the alternative power source prior to interconnecting
to the electrical distribution system.
2. Prior to initial energizing of the alternative power source,an inspection
and/or tests will be performed by the independent power producer and the electric department
personnel. The purpose of the inspection and testing will be to determine if the alternative
power source meets the minimum requirements described by IEEE 1547, IEEE 519, and UL
1741,Underwriter Laboratories Inc.,Standard for Inverters,Converters,and Interconnection
System Equipment for Use with Distributed Energy Resources.
3. The city electric department may elect to accept the installation and
energize the alternative power source, based on the inspection.
4. The electric department may require retesting or additional testing,in the
event discrepancies are noted between the certified equipment and drawings previously
provided to and inspected by the electric department.
Page 14 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
E. Alternative power source acceptance and interconnection with electrical
distribution system. The independent power producer is responsible to do all that may be
required to have its alternative power source certified by the city in meeting the requirements
described in this chapter. The alternative power source shall not be deemed complete until
such time as the electric department verifies that all of the requirements specified by the city
have been fully satisfied and all testing deemed appropriate by the electric department has
been completed to the electric department's satisfaction.
1. Provided that adequate capacity exists on the electrical distribution
system where the alternative power source is located,interconnection of an alternative power
source to the electrical distribution system shall be on a first come, first serve basis, as
determined by the effective date of submission of a complete application for interconnection.
2. The independent power producer shall pay all costs associated with the
interconnection of the alternative power source to the electrical distribution system.
3. The independent power producer shall pay all line extension fees in
accordance with the city tariff.
4. The electric department shall,within a reasonable time,interconnect the
alternative power source to the electrical distribution system. The interconnection may
happen upon completion of installation of the alternative power source and receipt of the
independent power producer's certifications:
a. All necessary federal, state, and local permits and certifications
have been obtained,including building permits and any authorization required by Title 15 of
this code.
b. Independent power producer certificate along with the
certifications shall be provided using the forms obtained from the electric department.
5. The electric department will execute the interconnection at its
convenience and at a time designed to cause no, or minimal, disruption of electric service to
other customers.
6. The electric department may, in the event the independent power
producer fails to pay the required costs or fees,immediately disconnect the alternative power
source with no notice and the independent power producer shall be responsible for all
disconnection and reconnection costs.
F. Recurring safety related testing requirements.
Page 15 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
1. The independent power producer is responsible to ensure protective
relaying and control systems have available and accessible sensing input terminals or test
ports, in order to perform and validate functional testing.
2. The alternative power source facilities shall meet the testing criteria
contained in IEEE Standard 1547.1 "IEEE Standard Conformance Test Procedures for
Equipment Interconnecting Distributed Resources with Electric Power Systems."
3. The independent power producer shall grant the city the right to observe
functional testing of the alternative power source facilities.
4. The independent power producer shall annually test safety features of the
alternative power source.
5. The electric department may require additional protective systems and
functional testing(i.e.,circuit breakers,switches,disconnect devices,protective relays,etc.)to
ensure the continued safe and efficient operation of the electrical distribution system is not
jeopardized by interconnection with the alternative power source.
6. The independent power producer must provide the electric department
documented test results within five working days after the completion of the test.
7. The alternative power source is also subject to inspection and re-testing
by the electric department upon reasonable notice each after the unit is placed into service.
G. Point of delivery.
1. The alternative power source generated power shall be metered by the
city to measure the amount of power from the city and the other to measure the amount of
power delivered into the electrical distribution system from the alternative power source.
2. The electric department shall install the meters and own any and all
improvements or equipment up to the delivery point,including all meters necessary to record
the generation or consumption of electricity.
3. The independent power producer is solely responsible for all costs
associated with the purchase,installation,and maintenance of all equipment required by the
city in order to properly meter the alternative power source.
4. The electric department shall specify the meters to measure such
parameters as time of delivery, power factor,voltage, and such other parameters.
Page 16 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
5. The independent power producer shall provide space for metering
equipment as specified by the electric department with the location of the meters to be
approved by the electric department.
H. Access to alternative power source facilities.
1. The independent power producer shall grant the city any necessary
easements and the city shall have the right of access to and from the alternative power source
and associated facilities at all hours for purposes of inspection,public safety,or protection of
the electrical distribution system.
2. The alternative power source generator shall have a manual disconnect
capability and the disconnect switch(es)shall be accessible,visible,and lockable in accordance
with the electric department requirements. Each switch shall be appropriately labeled and
disconnect switch(es) shall be lockable in the open position only. When locked in the open
position,the switch may be unlocked by electric department operating personnel only.
3. The electric department will lock the switch(es) in the open position
under the following circumstance:
a. If it is necessary for the protection of line crew personnel when
working on de-energized circuits during an emergency;
b. If the inspector of the alternative power source reveals a
hazardous condition or a lack of proper maintenance;
c. If the alternative power source interferes with other customers,
other utilities, or with the operation of the electrical distribution system;
d. If the electric department determines that the alternative power
source has generated power from a non-qualified resource; or
e. For general maintenance of the electrical distribution system.
4. The electric department will provide reasonable notice before locking the
main disconnect switch open for general maintenance as provided in condition 3 above.
5. It shall be a misdemeanor,punishable by a fine of up to$500,to remove
or tamper with a lock placed on the disconnect switch by the electric department.
I. Modification and expansion.
Page 17 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
1. Any future modification or expansion of the alternative power source will
require a separate engineering review and approval by the electric department and the
applicable permits as specified in paragraph A above.
2. The city reserves the right,once the alternative power source is operating,
to require the independent power producer,at the independent power producer's sole expense,
to perform such corrections,modifications,and additions as are required or recommended by
government or industry regulations and standards and necessary to continue safe operation
and/or interconnection of the alternative power source to the electrical distribution system.
The city will provide written documentation of the necessary changes required and the time
frame allowed to complete them. If the independent power producer fails to comply with the
changes in the specified time frame,the city will disconnect the alternative power source.
J. Operation and maintenance of alternative power source.
1. The independent power producer assumes full responsibility for the
routine maintenance and operation of the alternative power source and associated protective
devices. The independent power producer shall,at all times,keep the alternative power source
in good repair and operating condition.
2. The independent power producer shall maintain accurate records of all
maintenance activities performed. These records shall record the date and time,the person(s)
who performed the activities, and a brief description of the work. These records shall be
submitted to the electric department for inspection annually on or before 30 September.
Failure to comply may result in the disconnection of the alternative power source or additional
testing at the independent power producer's expense.
3. The independent power producer is solely responsible for all costs
associated with any subsequent or re-inspection of the alternative power source. The
alternative power source will have a system's operations and maintenance manual readily
available to electric department employees at all times.
4. To minimize interference, the alternative power source shall meet the
power quality standards presented in accordance with Section 10,Recommended Practices for
Individual Consumers of the latest IEEE Standard 519, "IEEE Recommended Practices and
Requirements for Harmonic Control in Electrical Power Systems." In addition,the alternative
power source shall comply with the latest IEEE Standard 1547,"IEEE Standard Conformance
Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power
Systems."
5. The independent power producer shall comply with all environmental,
land use,and other regulatory requirements. The independent power producer shall defend,
indemnify, and hold harmless the city from and against any and all liabilities,claims,losses,
Page 18 of 23
•
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
damages, or expenses of any type or kind, including actual attorney fees and expert witness
fees, which may be incurred or sustained by the city by reason of any act, omission,
misconduct,negligence, or default on the part of the independent power producer arising in
connection with or related to the independent power producer's ownership, installation,
maintenance,or operation of the alternative power source. The independent power producer
shall defend, indemnify, and hold harmless the city from and against any and all liability,
claims,lawsuits,losses,damages,expenses,fines,penalties,citations,or infractions of any type
or nature, including actual attorney fees and expert witness fees, which may be incurred or
sustained due to the independent power producer's alleged violation of any permitting,land
use, or environmental laws and regulations. In the event a claim is made which is subject to
this subparagraph, the city reserves the right to select legal counsel and control the defense
and settlement of any such claim. Such defense shall be at the sole expense of the independent
power producer. The independent power producer's indemnification obligation shall not
apply to liability for damages for bodily injury to persons or damage to property caused by the
sole negligence of the city and not in any way attributable to any act or omission on the part of
the independent power producer.
K. Damage or interference with electrical distribution system or other customers.
1. The alternative power source shall be designed to automatically
disconnect and lockout when the city's electrical service is interrupted for any reason.
Automatic reconnection of the alternative power source to the electrical distribution system
shall be done only on Hot-Bus/Hot-Line/Sync-Check. An automatic reclose of the alternative
power source breaker (or interrupting device) reconnection is permitted only after utility
power has been restored for a minimum of five minutes.
2. The alternative power source interconnection with the electrical
distribution system shall not cause any reduction in the quality and reliability of service
provided to other customers.
3. The alternative power source shall generate no abnormal voltages or
voltage fluctuations,and the harmonic content of the alternative power source output must be
below that level which would cause interference with other customers'loads,other utilities,or
the city's electrical distribution facilities and equipment.
4. The independent power producer shall,if the alternative power source or
independent power producer's actions cause damage to the electrical distribution system,
facilities, or equipment,be responsible for all costs associated with repairing damage and/or
replacing the electrical distribution facilities or equipment.
5. The independent power producer shall be liable for all such damages,
claims,and losses if the alternative power source and/or facilities cause injury,loss,or damage
to other customers on the city's electrical distribution system in addition to their facilities. The
Page 19 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
independent power producer shall be required to carry liability insurance,with the City of
Seward as a named insured,to protect against injury,damages,or losses suffered by the city or
its customers caused by the alternative power source.
6. The electric department will disconnect the alternative power source
from the electrical distribution system until the cause of damage to or interference with the
electrical distribution system or any of its customers have been remedied to the electric
department's satisfaction,and costs associated with the damage or interference caused by the
alternative power source or independent power producer's actions are paid in full by
independent power producer.
7. When using on-site fossil fuel generation, the alternative power source
must be disconnected from the electrical distribution system. The independent power
producer shall provide any equipment necessary to disconnect the alternative power source.
L. Electricity consumption offset; billing and payments.
1. If the city supplied more power than the independent power producer
during the monthly billing period,the customer will be billed for the net electric consumption
at the rate established in the tariff. If the meter reading for power into the independent power
producer's facility is higher than the meter reading for power out of the independent power
producer's facility, the independent power producer will be billed for the net electric
consumption at the rate established in the tariff.
2. If the customer produced more power than the city supplied during the
billing period,the customer will receive a credit towards the next bill,provided the customer is
in compliance with this chapter and is current on amounts owed to the city. If the meter
reading for power out of the alternative power source is higher than the meter reading for
power into the alternative power source,the independent power producer will receive a credit,
on the next bill, equal to the difference between the two readings, at a rate as determined by
the tariff.
3. Following disconnection,the city will bill for amounts owed or pay the
independent power producer for any net credit. The independent power producer shall pay
the reasonable costs of removal, relocation, modification, or renovation of any facilities or
equipment required for interconnection with,or disconnection from,the electrical distribution
system.
M. Interruption of alternative power source energy deliveries. It is likely that the city
will require alternative power sources to be disconnected from the electrical distribution
systems whenever the city is generating its own power. The electric department shall have the
right at any time,without liability to the independent power producer or any other person,to
Page 20 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
interrupt, reduce, suspend, or curtail generation and/or deliveries of energy from the
alternative power source:
1. When reasonably necessary, in order for the electric department to
construct,install,maintain,repair, replace,remove,investigate,or inspect any equipment or
any part of the electrical distribution system; or
2. If the electric department reasonably determines that interruption or
reduction of deliveries or power is necessary because of a system emergency,a forced outage,
Force Majeure, or other operational considerations.
14.15.420. Procedures and Application Process for Responding to Inquiries From an
Independent Power Producer for an Alternative Power Source Greater Than 25KW.
A. A request for interconnection of an alternative power source with a nameplate
capacity of more than 25 KW may be subject to power sales agreements entered into by the
city. The electric department shall notify the independent power producer regarding what
information must be provided to enable the city to determine what additional agreement terms
and conditions are appropriate given the specific circumstances of the proposed alternative
power source. Such information may include the following:
1. Detailed description of the alternative power source;
2. Precise location of the alternative power source;
3. Nameplate electric generating capacity, net electric energy output, and
plant factor of the alternative power source;
4. Minimum and maximum availability of firm capacity and/or energy from
the alternative power source during daily and seasonal peak periods;
5. Projected date on which deliveries of capacity and/or energy would
commence;
6. Plans for alternative power source construction and financing, and the
acquisition of all necessary property rights, permits, authorizations, and fuel contracts;
7. Expected and demonstrated annual and seasonal reliability of the
alternative power source;
8. Periods of scheduled maintenance and outages;
9. Plans for dispatch ability of the alternative power source;
Page 21 of 23
CITY OF SEWARD,ALASKA
ORDINANCE 2012-010
10. If applicable, plans for acquiring access to adequate firm transmission
services and the terms and conditions of such access; and
11. Any other information to assist the city in evaluating the circumstances
and determining appropriate terms and conditions.
B. After the independent power producer has satisfied all requirements provided
for in subsection A above,and following any approval that may be required by an entity that
has entered into a power sales agreement with the city,a power purchase agreement is subject
to approval by city council resolution.
14.15.430. -Fossil Fuel Standby Generation.
The city will not permit the interconnection and operation of fossil fuel standby generation
facilities,such as diesel or gasoline engine drive standby generators,with its integrated distribution
system under any circumstances. Diesel or gasoline driven standby generators shall be connected to
the customer's load only through a double-throw switch that will prevent parallel operation with the
- ' :' •
.. •. - --electrical distribution system. When using on-site fossil fuel generation,
the alternative power source must be disconnected from the electrical distribution system. The
independent power producer shall provide any equipment necessary to disconnect the
alternative power source.
14.15.42035. -Customer Liability.
(a) Accidents. The customer shall be solely responsible for all accidents or injuries to
persons or property caused by the operation of the customer's equipment, or by any failure of the
customer to maintain his equipment in a satisfactory and/or safe operating condition, and shall
indemnify,defend,and save harmless the city from any and all claims,suits,losses,or damages for
injuries to persons or property,of whatsoever kind or nature,arising directly or indirectly out of the
operation of such equipment or by the failure of the customer to maintain its equipment in
satisfactory and/or safe operating condition.
(b) Digging permits or utility locate requests. The customer is solely responsible for the
safety and security of city equipment on the customer's property whether in or out of a utility
easement. The customer shall complete a digging permit or utility locate request prior to any
digging, drilling, driving into the ground, or any subterranean disturbance. If"locate required" is
indicated on the form, the customer shall not disturb the ground until all indicated locates are
complete. The customer or his contractor shall not use mechanized equipment within two feet of any
located utility. Failure to follow this procedure will make the customer liable to a$500.00 fine plus
any cost to repair the facility. Digging permits and utility locates are available free of charge upon
request and will be done expeditiously.
Page 22 of 23
CITY OF SEWARD, ALASKA
ORDINANCE 2012-010
Section 3. This ordinance shall take effect ten days following its enactment.
PASSED AND APPROVED by the City Council of the City of Seward, Alaska,this 24th
day of September, 2012.
THE CITY OF SEWARD,ALASKA
David Seaward, Mayor
AYES:
NOES:
ABSENT:
ABSTAIN:
ATTEST:
Johanna Kinney, CMC
City Clerk
(City Seal)
Page 23 of 23
Agenda Statement
Meeting Date: August 27, 2012
, ov
sEt9
To: City Council uo
Through: Jim Hunt, City Manager q AQP
From: John Foutz, Utility Manager
Agenda Item: AMENDING TITLE 14 OF THE CITY'S CODE OF ORDINANCES TO PROVIDE
FOR INTERCONNECTION OF RENEWABLE ENERGY SYSTEMS
BACKGROUND & JUSTIFICATION:
Renewable and alternative energy sources have become more affordable,prevalent,and feasible for
private individual land owners and business owners. One local hurdle has been a lack of interne with
the City's electrical utility system. This ordinance will change title 14, specifically the electrical
portion,to allow the City of Seward to connect these systems to its electric grid and,in turn,give the
customers in the City of Seward's coverage area a chance to contribute to a greener energy power
portfolio. Many of the other utilities in the State of Alaska have already established similar
interconnect policies and procedures. The attached ordinance change is in response to the wishes
voiced by the public wanting to install, connect and run small renewable generation systems.
INTENT:
To amend the City's Code of ordinance to safely allow the connection of renewable generation
systems to the City of Seward's electric grid.
CONSISTENCY CHECKLIST: Yes No N/A
Comprehensive Plan : Sections 2.2 Economic Base, 3.1.1.2 Update
1 and expand infrastructure..., and 3.7.3.1 Continue to upgrade and X
expand utilities to meet existing needs and encourage future
development
2. Strategic Plan (document source here): X
3. Other (list): X
FISCAL NOTE: Financial implications will be addressed in the tariff revisions.
Approved by Finance Department:
ATTORNEY REVIEW: Yes X No
RECOMMENDATION: Approve the amendments proposed to Title 14 in Ordinance 2012-110.
CITY OF SEWARD ELECTRIC DEPARTMENT
TECHNICAL REQUIREMENTS FOR INTERCONNECTION
Table of Contents
1 Introduction 2
1.1 Separate Operation 3
1.2 Parallel Operation 3
1.3 Islanding 4
2 Classification of Non-Utility Generation Installations _ . _ 4
2.1 Class A Facilities 5
2.2 Class B Facilities 5
2.3 Class C Facilities 5
2.4 Class D Facilities 6
3 Design Requirements 6
3.1 Design Documentation and Information 6
3.1.1 One-Line Diagram 6
3.1.2 Three-Line Diagram (as required) 6
3.1.3 Relay, Metering, and Telemetering Functional Drawing 7
3.1.4 Paralleling Device Control Drawings 7
3.1.5 Facility Grounding Drawings 7
3.2 Protective Systems and Equipment 7
3.3 City of Seward System Modifications 8
3.4 Induction Generators 8
3.5 Standard System Voltages 8
3.6 Power Converter Systems 9
4 INTERCONNECTION EQUIPMENT REQUIREMENTS 9
4.1 Overview of Required Equipment 9
4.1.1 Metering Requirements 10
4.1.2 Interconnection Disconnect Device 10
4.1.3 Interconnection Transformer .. 11
4.1.4 Protection and Control Devices 11
4.1.5 Telemetry and Monitoring Requirements 12
4.1.6 Operational Data Logging 13
4.1.7 Export Power Control Equipment 13
4.1.8 Protection & Control System Testing Conformance 13
5 Interconnection Equipment Requirements By Class 14
5.1 Equipment Requirements - Class A Facilities 14
5.1.1 Application of Minimum Requirements—Class A Facilities 14
5.1.2 Metering Requirements —Class A Facilities 14
5.1.3 Interconnection Disconnect Device—Class A Facilities 14
5.1.4 Interconnection Transformer—Class A Facilities 14
5.1.5 Protection and Control Devices —Class A Facilities 15
5.1.6 Telemetry and Monitoring—Class A Facilities 16
5.1.7 Operational Data Logging— Class A Facilities 16
5.1.8 Export Power Control Equipment—Class A Facilities 17
5.2 Equipment Requirements - Class B Facilities 17
5.2.1 Application of Minimum Requirements—Class B Facilities. 17
5.2.2 Metering Requirements—Class B Facilities 17
5.2.3 Interconnection Disconnect Device—Class B Facilities 17
5.2.4 Interconnection Transformer—Class B Facilities 17
5.2.5 Protection and Control Devices—Class B Facilities 18
5.2.6 Telemetry and Monitoring—Class B Facilities 20
5.2.7 Operational Data Logging—Class B Facilities 20
5.2.8 Export Power Control Equipment—Class B Facilities 20
5.3 Equipment Requirements - Class C Facilities 20
5.3.1 Application of Minimum Requirements—Class C Facilities 20
5.3.2 Metering Requirements— Class C Facilities 21
5.3.3 Interconnection Disconnect Device—Class C Facilities 21
5.3.4 Interconnection Transformer—Class C Facilities 21
5.3.5 Protection and Control Devices—Class C Facilities 21
5.3.6 Telemetry and Monitoring—Class C Facilities 23
5.3.7 Operational Data Logging—Class C Facilities 23
5.3.8 Export Power Control Equipment—Class C Facilities 24
5.4 Equipment Requirements - Class D Facilities 24
5.4.1 Application of Minimum Requirements—Class D Facilities 24
5.4.2 Metering Requirements—Class D Facilities 25
5.4.3 Interconnection Disconnect Device—Class D Facilities 25
5.4.4 Interconnection Transformer—Class D Facilities 25
5.4.5 Protection and Control Devices—Class D Facilities 25
5.4.6 Telemetry and Monitoring—Class D Facilities 27
5.4.7 Operational Data Logging—Class D Facilities 28
5.4.8 Export Power Control Equipment—Class D Facilities 28
5.5 Voice and Data Communications 29
5.6 Producer-Owned Electrical Distribution Systems 29
6 INTERCONNECTED OPERATING REQUIREMENTS 29
6.1 Approval for Parallel Operation 30
6.2 Discontinuance of Parallel Operation 30
6.3 Islanded Operation 30
6.4 Voltage Requirements 30
6.4.1 Voltage Levels & Fluctuations 30
6.4.2 Voltage Regulation and Reactive Power Requirements 30
6.5 Generator Droop Requirements 31
6.6 Harmonics 31
6.7 Power Factor Requirements 31
6.8 Coordination with the City of Seward Protective System 32
6.9 Maintenance &Testing 32
6.9.1 Interconnection Equipment Maintenance 32
6.9.2 Protective Systems Functional Testing 33
7 DEFINITIONS 37-44
8 APPLICATION 45
1 Introduction
The operation of non-utility generation in parallel with the electrical supply grid poses important
safety concerns for City of Seward personnel and equipment. The safe, reliable operation of the
City of Seward system, for all residents, is of the utmost importance to us. Accordingly, any
interconnected non-utility generating facility must meet all applicable federal, state, and local
safety codes and regulations, in addition to the specific guidelines and requirements contained in
these guidelines. The City of Seward strongly recommends (and in some cases, may require)that
those applying for interconnection obtain the services of an engineering professional, expert in
the design of wiring and protection systems, including control and protection systems for
generating equipment interconnected with electric grids.
Electrical distribution systems are inherently complex in design; each proposal to interconnect to
the system will be unique in geographic location, operational characteristics, and impact to the
electrical grid. All proposals must therefore be analyzed to determine the specific technical
operating criteria and utility interface requirements.
The purpose of the City of Seward interconnection process is to provide a thorough but
expedient method by which the applicant can obtain authorization for a safe and reliable
interconnection with the City of Seward electrical system.
It should be noted that the requirements contained in these guidelines represent the minimum that
City of Seward applies in evaluating and installing its own generation resources to the system.
The aim of this document is to guide the applicant to ensure that the safe, reliable performance of
the City of Seward system is maintained as we assist in the process of interconnecting the
applicant's non-utility generation technologies to meet the energy requirements of our
consumers.
This document shall not be construed as modifying any agreements that exist to establish the
rights and obligations of both City of Seward and the applicant.
The City of Seward will estimate its costs related to the applicant's proposed interconnection.
The applicant will be responsible for full payment of the costs the City of Seward would not
have incurred but for the applicant's interconnection.
1.1 Separate Operation
The requirements contained in the Interconnection Guidelines generally do not apply to
`separate operating' non-utility generating systems. Typically, separate operating systems
include small emergency generating units for residential use, and certain uninterruptible
power systems (UPS), which do not energize the City of Seward system in their normal
course of operation.
Within the context of these guidelines, a `separate operating' system is defined as a
generating system, which has no capability or possibility of connecting and operating in
parallel with the City of Seward system. Generally, a separate system is comprised of
power generating equipment and switching apparatus located on the owner's site or
property, which are designed and intended for use as an emergency, stand-by, or stand-
alone power system.
1.2 Parallel Operation
A transfer of power between the two systems is a direct and often desired result of
parallel operation. A consequence of such parallel operation is that parallel generation
becomes an electrically connected part of the City of Seward power system which must
be considered in the electrical protection of City of Seward facilities. City of Seward's
ability to provide safety to City of Seward personnel who may need to perform work on a
power line is lost when a customer facility is operating in an islanded mode. The ability
to maintain electrical power within specifications to customers is also lost during an
islanded operating condition. For these reasons protection from islanding shall be
incorporated into each customer's facility connected in parallel to the City of Seward.
Protection system design incorporated into customer facilities shall be performed by a
power system engineer qualified to perform such work and who is licensed as a
professional engineer in the state of Alaska. The protection system design shall be
reviewed by the City of Seward. Prior to energizing a customer facility any changes to
the protection system design requested by the City of Seward will be made by the
customer. Smaller inverter type equipment meeting the most recent UL and IEEE
standards for interconnecting to utility power systems may have integral protection
equipment built into one complete package. All adjustable or factory set protection
parameters incorporated into Grid Interactive equipment shall be reviewed by the City of
Seward. Prior to energizing customer's inverter type generation facilities, all settable
protection parameters recommended by City of Seward will be made to the customer's
equipment by the customer and confirmed by the City of Seward.
1.3 Islanding
Within the context of these guidelines, islanded operation (or "islanding") denotes the
condition where the producer's generation energizes a portion of the City of Seward
electrical grid that has become electrically separated from the rest of the City of Seward
system. For safety and quality reasons, no producer may island any portion of the City of
Seward system, unless provided expressed approval and authorization by the City of
Seward.
Of primary concern are the possible dangers, which may be presented to City of Seward
personnel under islanding conditions. City of Seward line crews must have the assurance
that any section of City of Seward's system is de-energized prior to work and will not be
re-energized until there is confirmation that they are physically clear of the system. Under
an islanded condition, the City of Seward cannot provide assurance to its personnel that
all,portions of the island are de-energized
Another equally important concern is the responsibility the City of Seward has to deliver
electrical service within the proper ranges (voltage, frequency, etc.)to its consumers. If a
portion of the City of Seward system were to become islanded and energized by non-City
of Seward generation, City of Seward would no longer control the quality, safety, and
integrity of the electrical service delivered to its consumers.
2 Classification of Non-Utility Generation Installations
In order to evaluate proposed interconnections to the electrical system, City of Seward
categorizes Producer—owned generation systems into four general classes — Classes A, B, C, and
D. This system is based upon industry-accepted methodology for assessing the possible impacts
that interconnected facilities may have.on the system. Criteria for classification include the
maximum capability of the facility (output capacity in kVA), the type of generating system and
characteristics (synchronous generator, induction generator, power converter system, etc.), the
•
`stiffness ratio' of the facility in relation to the City of Seward electrical system, and system
electrical characteristics at the point of interconnection.
One measure used to determine the potential impact is the stiffness ratio at the point of
interconnection. This stiffness ratio is the ratio of the available electric system fault current at the
interconnection point to the maximum-rated current of the Producer's facility. Used throughout
the industry, this ratio indicates the capability of a particular generator to influence system
voltages and operating characteristics. For any given point on the system, the higher the ratio,the
lower the probability that the Producer may contribute to system disturbances or adversely affect
nominal system voltage levels.
To obtain the minimum interconnection equipment requirements associated with a particular
class of facilities, please refer to Section 5: Interconnection Equipment Requirements.
2.1 Class A Facilities
Non-utility generator installations of 10-kVA output or less, where the system stiffness
ratio is at least 100, are identified as Class A installations. Interconnection requirements
for Class A installations are typically the most moderate of all the classes.
In general, Class A installations are most applicable to residential and/or small
commercial on-site power supply applications and are not expected to affect City of
Seward primary electrical distribution feeder devices. Class A installations are rarely
capable of significantly altering local voltages on adjacent distribution facilities, and the
relatively small-sized generators are not capable of supporting large islands on the
primary electrical system.
2.2 Class B Facilities
Non-utility generator installations of 10 kVA to 100 kVA, where the stiffness ratio is at
least 50, are identified as Class B installations.
As with Class A installations, the probability of interference with City of Seward
consumers and electrical distribution system equipment is relatively low, but the risk is
sufficient to warrant moderate interconnection requirements. Class B installations
generally do not significantly influence primary electrical feeder devices, but can alter
primary and/or secondary voltages. Thus, islanded operation with the City of Seward
system is of greater potential concern than with Class A installations.
2.3 Class C Facilities
Non-utility generator installations of 100 kVA to 1,000 kVA, where the stiffness ratio is
at least 30, are identified as Class C installations. Given the larger capacity of Class C
facilities (relative to Classes A and B), the potential to island large sections of the City of
Seward electric system is of much greater concern. In addition, Class C installations can
significantly influence primary feeder devices and operations. Accordingly, the
probability of interference with City of Seward consumers and system equipment is high
enough to necessitate more stringent interconnection requirements
2.4 Class D Facilities
Non-utility generator installations of 1,000 kVA to 5,000 kVA, where the stiffness ratio
is at least 20, are identified as Class D installations.
This size of installation and available fault contribution can present a major risk to system
safety and operations. The effect on City of Seward system voltages and equipment, due
to unacceptable constant or transient conditions from the installation, can be serious. Due
to the capacity of Class D facilities, islanding is of major concern to the City of Seward.
Accordingly, greater levels of interconnection protective equipment are required for
Class D systems.
Class D installations require detailed and careful system studies to determine the amount
and degree of interconnection and interface requirements, as they are capable of having a
major influence on the City of Seward connecting feeder(s), adjacent feeders, and
substations.
3 Design Requirements
3.1 Design Documentation and Information
For City of Seward review and reference purposes, the Producer shall submit the
following information and design documentation with the interconnection application(s).
In certain cases, such as smaller-class facilities, some submittal requirements may be
waived, at City of Seward's discretion. All of the Producer's interconnection final design
plans and drawings shall be approved by an electrical engineer, registered and recognized
as a Professional Engineer in the State of Alaska. This approval shall be indicated by the
presence of the engineer's professional seal on all drawings and documents.
3.1.1 One-Line Diagram
This is a schematic electrical drawing with sufficient detail to show the major
elements of the facility electrical connections, interconnection and protective
equipment, and point of interconnection to the City of Seward electrical system.
The diagram should include the following:
• Generating equipment
• Circuitry of the facility, to include conductor types, sizes, and bus
electrical ratings
• Metering points and instrument transformers (as applicable)
• Interconnection transformer
• Relays and circuit breakers/interrupting devices
• Switchgear(as applicable)
• Utility circuitry at the point of interconnection
3.1.2 Three-Line Diagram (as required)
This schematic electrical drawing shall represent all three phases and neutral
connections of the interconnected facility circuits, showing potential transformer
(PT) and current transformer (CT) ratios and details of their configuration,
including relays, meters, and test switches.
3.1.3 Relay, Metering, and Telemetering Functional Drawing
This diagram shall indicate the functions of the individual relays, metering, and
telemetering equipment, if any. For simpler systems, such as some Class A
facilities, the one-line diagram and the functional diagram can be combined.
3.1.4 Paralleling Device Control Drawings
These drawings shall show the conditions, relays, and instrument transformers
that cause all switchgear and/or circuit breakers applied to the interconnecting
facility to open or close. The source of power for each control should be clearly
indicated in the drawings. For simpler systems, such as Class A facilities, these
control drawings can be incorporated in the one-line diagram.
3.1.5 Facility Grounding Drawings
These drawings shall indicate ground wire sizes, bonding, and connections, as
well as the number, size, and type of electrodes, and spacing. The Producer's
grounding scheme shall conform to IEEE Std. 1547, Part 4.1.2: Integration with
Area EPS Grounding.
In addition to the above, the Producer shall provide to the City of Seward any additional
design information or documents pertaining to the interconnected facility, as requested.
3.2 Protective Systems and Equipment
Control and protection designs for facilities proposed to operate in parallel with the City
of Seward system must be approved by the City of Seward prior to approval for
interconnection with the City of Seward electric grid.
The specific design of the protection system depends on the generator type, size, and
other site-specific considerations. The Producer must meet City of Seward requirements,
and all designs and equipment must conform to the National Electrical Code, the National
Electrical Safety Code, IEEE standards, and all federal, state, local, and municipal codes.
When proposing protective devices for the protection of the City of Seward system, the
applicant shall submit a single-line drawing of this equipment to the City of Seward for
approval of the interconnection protective functions and equipment. Any changes
required by City of Seward must be made prior to final acceptance, and the City of
Seward must be provided with dated copies of the fmal drawings. To eliminate
unnecessary costs and delays, the final design should be submitted to, and approved by
the City of Seward prior to ordering equipment and the commencement of
construction.
The City of Seward will approve only those portions of the Producer's system designs,
which apply to the interconnection with, and protection of, the City of Seward system.
The City of Seward may comment on other areas, which appear to be incorrect or
deficient, but will not assume responsibility for the correctness of protection pertaining to
the Producer's system.
In order to gain approval for interconnected operation, At the completion of construction
the Producer shall demonstrate to designated City of Seward personnel conformance to
the testing specifications and requirements contained in IEEE Standards 1547 and 1547.1
for all protective and control systems associated with the Producer's interconnection
equipment. The Producer shall provide documentation of test results, protective relay
settings, and control system settings to the City of Seward.
3.3 City of Seward System Modifications
Any modification to the City of Seward electric grid, such as the installation of additional
equipment, reconductoring of all or a portion of the connecting City of Seward line, or
reconfiguration of City of Seward protection systems necessary to permit in-parallel
operation with the City of Seward electric grid,will be performed by the City of Seward.
Where such City of Seward system modifications are required to allow the
interconnection of the Producer's facilities, the City of Seward will perform these
modifications, at the Producer's expense, providing all labor, materials, and equipment
necessary.
3.4 Induction Generators
Induction generators require varying amounts of reactive electric power (VARs) in order
to produce real electric power (watts). Due to this consumption(or absorption) of VARs,
induction generators inherently operate at leading power factors. It is the responsibility of
the Producer to provide all reactive support or compensation to maintain power factors
within the limits specified in Section 6.7: Power Factor Requirements, when operating in
parallel with the City of Seward electric grid. Reactive support for required power factor
correction may be provided by the Producer's installation of City of Seward approved
reactive compensation devices, or through contractual agreement with City of Seward to
provide ancillary services to the Producer.
3.5 Standard System Voltages
The City of Seward's system voltages conform to ANSI C84.1 standards and are
outlined as follows. All distribution circuits,both secondary and primary, are
effectively grounded. Specific voltage requirements and limits for Producers
generation are described in Section 5: Interconnected operation Requirements.
• Distribution Secondary Voltages:
- Single Phase, 120/240 volts, 3wire
- Single Phase,240/480 volts, 3wire
- Three Phase, 120/208 volts,4 wire, grounded wye
- Three Phase, 277/480 volts,4 wire, grounded wye
• Distribution Primary Voltages:
- Single Phase, 7,200 volts
- Single Phase, 14,400 volts
- Three Phase, 7,200/12,470 volts,4 wire, grounded wye
- Three Phase, 14,400/24,900 volts,4 wire, grounded wye
• Transmission Voltages:
- 69,000 volts, three phase
- 115,000 volts,three phase
3.6 Power Converter Systems
Reactive power supply requirements for converter systems are similar to those for
induction generators, and the general guidelines discussed apply. The City of Seward
requires that power converter systems conform to the requirements contained in IEEE
Standard 1547 and 1547.1, and that such systems for interconnected generation sources
meet the recommended limits for current, voltage, and harmonic distortion contained in
IEEE Std. 519, Sections 10 and 11. If the Producer's converter system(s) is found to
interfere with the City of Seward electric grid, City of Seward consumers, or other power
producers, the Producer may be required to install adequate electrical filtering to bring
the voltage and current outputs to acceptable levels. Converters that have been tested and
certified by an independent laboratory, such as Underwriters' Laboratories (UL), to be
non-islanding, and meet the recommended limits contained in IEEE Std. 519, Sections 10
and 11,may be interconnected to the City of Seward system as-is.
For units rated less than 100 kW, it is usually acceptable to have the frequency and
voltage protective functions built into the electronics of the converter if the set points of
those functions meet IEEE Std. 1547 criteria, are tamperproof, and can be easily and
reliably tested.
4 INTERCONNECTION EQUIPMENT REQUIREMENTS
In order to simplify the process for determining the interconnection equipment necessary to
operate non-utility generation in parallel with City of Seward's electric system, the City of
Seward has developed this section, which outlines the minimum interconnection requirements
for each class of Producer-owned facilities.
As a minimum, City of Seward requires that all of the Producer's interconnection equipment and
facilities meet the requirements contained within IEEE Std. 1547, Part 4.1: General
Requirements.
4.1 Overview of Required Equipment
This overview of required equipment and devices provides general descriptions as to the
components, including functionality, purpose, and responsibilities by both the Producer
and the City of Seward regarding ownership, installation, and maintenance.
Specific requirements for each classification of Producer-owned interconnected
generation can be found in Section 5.0: Interconnection Equipment Requirements By
Class.
4.1.1 Metering Requirements
For all classifications of parallel generating facilities, City of Seward requires that
separate "In-and-Out Metering" be utilized to capture the real power flows (watt-
hours) into and out of a Producer's facility.
It is the Producer's responsibility to provide, install, and maintain all facilities
necessary to accommodate City of Seward metering. The City of Seward shall
provide all meters at the Producer's expense. Depending upon the specific
application, required metering may also include the following:
• VAR-hour metering
• Real power(watt)demand metering
• Reactive power(VAR) demand metering
• Time-of-delivery metering
4.1.2 Interconnection Disconnect Device
A City of Seward approved manual disconnect device must be provided as a
means of electrically isolating the non-utility generating facility from the City of
Seward system, and establishing working clearances for maintenance and repair
work in accordance with City of Seward safety rules and practices.
This manual disconnect device must be securable and readily accessible by City
of Seward personnel, and provide visible verification of disconnection from the
City of Seward electric grid. For connections to the City of Seward transmission
grid, a tap line switch may also be required if, in City of Seward's judgment,
sufficient tap line exposure exists to warrant it.
In all cases, unless expressed written permission is provided by the City of
Seward, the disconnect device shall be located on the City of Seward side of the
interconnection point. At the Producer's expense, City of Seward shall install the
device and assume ownership and maintenance responsibilities. Only devices
specifically approved by City of Seward shall be used.
The manual disconnect device must be physically located for ease of access and
visibility to City of Seward personnel. The disconnect device shall be identified
with a City of Seward-designated switch number plate.
The disconnect device shall not be used by the Producer to make or break
parallels between the City of Seward system and the Producer's generator(s). The
device enclosure and operating handle (when present) must be kept locked at all
times with City of Seward padlocks.
Disconnect devices must meet the following minimum physical requirements for
approval by the City of Seward:
• Must be located near the facility metering;
• Must be externally operable without exposing the operator to contact with
live parts and, if power-operable, of a type that can be opened by hand in
the event of a supply failure;
• Must provide a visible-break indication, showing whether in the open or
closed position;
• Must have ratings not less than the load and fault current to be carried;
• For disconnect equipment energized from both sides, a marking shall be
provided to indicate that all contacts of the disconnect equipment may he
energized;
• Must be gang-operated if three-phase;
• For outdoor installations, disconnect devices must be weather-proof or
designed to withstand exposure to weather;
• Must be lockable in both the open and closed positions.
4.1.3 Interconnection Transformer
Functionally, the interconnection transformer is no different from any other
service transformer, which transforms City of Seward's nominal voltages from
one level to another. What distinguishes this device from a standard service
transformer is that it must serve to interconnect the Producer's generating
facilities to the City of Seward system.
Of major concern to the City of Seward is the possibility that adverse power
quality or service interruptions may be experienced by City of Seward consumers,
which are served by the same transformer that interconnects the Producer's
generating facilities. Under certain conditions, the utilization of a dedicated
interconnection transformer may be required to limit such adverse conditions.
A dedicated transformer, as defined in these guidelines, is one that is dedicated to
serving the Producer's facility; no other City of Seward consumers shall be
connected on the secondary side of the transformer. The purpose of a dedicated
transformer is to minimize any adverse impacts to City of Seward consumers,
which may result from the parallel operation of Producer-owned facilities.
Generally, for smaller installations (Class A and B facilities), a dedicated
transformer will not be required. However, this will be evaluated oii an individual
basis for each Applicant requesting to interconnect to the City of Seward system.
For Class C and D facilities, a dedicated transformer will be required in all cases.
For these sizes of facilities, there will typically be a dedicated City of Seward
transformer in place if the Producer's facility contains existing loads served by
City of Seward. Where this is not the case, a dedicated interconnection
transformer will need to he installed.
The specific conditions under which a dedicated transformer is required are
addressed for each class of facilities in this section of the guidelines. Where a
dedicated transformer is required to allow the interconnection of the Producer's
facility(s), the Producer will be responsible for the associated labor and equipment
costs
4.1.4 Protection and Control Devices
Certain protective functions and control equipment are necessary to ensure that
both the safety and reliability of the City of Seward system are maintained. While
the Producer is responsible for the installation and maintenance of such
equipment, it should be noted that the required equipment outlined in this section
apply only to the protection of the City of Seward system, not the Producer's
facilities. Typically, the minimum protective and control equipment requirements
for all classifications of Producer-owned facilities are as follows:
• Paralleling Device(controlled switchgear and/or circuit breaker)
• Anti-Islanding Protective Functions
— Overvoltage Protective Relaying
—Under-voltage Protective Relaying
—Over-frequency Protective Relaying
—Under-frequency Protective Relaying
• Synchronization Protection:
—Synchronous Generators: Automatic Synchronizing with Relay
• Supervision
—Induction Generators: Speed Matching Relaying
— Power Converter Systems: Conform to the requirements of IEEE
Standard 1547, Parts 4.1.3 and 5.1.2.C.
Due to the impact that larger facilities can have on the City of Seward system,
additional requirements can be necessary for such facilities, including but not
limited to:
• System Fault Protection Functions
—Ground Over-current Protective Relaying
—Phase-fault Protective Relaying
• Transfer Trip Capability
• Export Power Control Equipment
—Voltage Regulator/Power Factor Controller
—Direct Digital Control (City of Seward SCADA Control)
—Power System Stabilizer
4.1.5 Telemetry and Monitoring Requirements
Telemetry generally involves the communication of measured outputs from the
Producer's generating facility to City of Seward. This can include variables such
as the status of equipment and controller functions, as well as plant output data
(voltage, real and reactive power, power quality, etc.). Typically, variables are
transmitted with the aid of a communication channel that permits the
measurement to be interpreted at a distance from the primary detector.
For smaller facilities, such as Class A and B installations, data telemetry is
generally not required.
For the larger classifications of facilities (Classes C and D), telemetering of data
to include interconnection status, power flows (real and reactive power) and
voltage will be required.
For specific telemetering requirements, refer to Section 5.0, Interconnection
Equipment Requirements by Class.
4.1.6 Operational Data Logging
Typically, operational data logs include recorded information on generating unit
operations such as the following:
• Key operational parameters such as voltage, real and reactive power,
frequency, etc.;
• Protective equipment operations (circuit breaker trips, protective relay targets,
etc.);
• Time and nature of communications with City of Seward Power Control
Department personnel.
For smaller sized facilities, such as Classes A and B, operational data logging is
not required, but when such data is available or maintained by the Producer, it
shall be provided to the City of Seward upon request.
For Class C and D facilities, a seven (7) day digital data logger is required. For
specific parameter recording requirements, refer to Section 5.0: Interconnection
Equipment Requirements by Class, for Class C and D facilities.
4.1.7 Export Power Control Equipment
For cases where the Producer and the City of Seward formulate a Power Purchase
Agreement for export power from the Producer's facility, special control
equipment may be necessary depending upon the specific performance terms of
the agreement.
Generally, special control equipment will not be necessary for relatively smaller
generating facilities such as Class A and B facilities. Having larger generating
capability and capacity, Class C and D facilities may export substantial amounts
of power into the City of Seward distribution system, thus these classes of
facilities may require export power control equipment. This equipment may
include Voltage Regulation Control, Power Factor Controllers, and Power System
Stabilizers, depending on the specific determination. Refer to the specific
requirements for Class C and D under Section 5.0 for further information.
4.1.8 Protection & Control System Testing Conformance
In all cases, the Producer's protective relays and controls systems associated with
the interconnection shall adhere to the requirements contained in IEEE Std.
1547.1
To allow performance and verification of functional testing as required, these
systems shall have accessible sensing inputs or testing terminal blocks, or
acceptable equivalents as determined by the City of Seward.
5 Interconnection Equipment Requirements By Class
5.1 Equipment Requirements - Class A Facilities
5.1.1 Application of Minimum Requirements— Class A Facilities
This portion of the Interconnection Guidelines addresses the general minimum
interconnection equipment necessary for Class A generating facilities. Specific
requirements for each individual proposed facility may vary, depending on factors
such as the location of the interconnection, the number and proximity of adjacent
City of Seward consumers, and the characteristics of the facility proposing to
interconnect to the City of Seward system.
City of Seward has developed these minimum requirements based on the
following assumptions as to the nature of the electric system at the point of
interconnection, and the utilization of the Producer's energy:
• The total non-utility generating capability(kVA), singular or aggregate,on the
interconnecting City of Seward feeder is less than 10 percent of the averaged
annual hourly peak demand(kVA)for that feeder.
• Interconnections to the City of Seward distribution system are typically made
at City of Seward's standard secondary voltages on individual secondary
circuits.
• The Producers' generation is generally sized to meet all or a portion of the
Producer's load at the point of interconnection.
• Class A installations are assumed to connect only to single-phase portions of
the City of Seward system.
Where proposed interconnections fall outside of the above parameters,
modifications to the minimum requirements may be necessary in order to
maintain the safety, reliability, and operational performance of the City of Seward
system.
5.1.2 Metering Requirements — Class A Facilities
In general, City of Seward only requires in/out watt-hour metering for Class A
facilities. Metering facilities shall be installed per the City of Seward's metering
requirements.
5.1.3 Interconnection Disconnect Device— Class A Facilities
An approved manual disconnect device is required for all Class A installations
(Refer to Section 5.0: Interconnection Disconnect Device)
5.1.4 Interconnection Transformer— Class A Facilities
Generally, for Class A installations, a dedicated transformer for interconnecting
the Producer's facility is not required. However, under certain conditions the
utilization of a dedicated transformer may be required. Examples of such
conditions would include the following:
• The Producer's total rated generating capability is at or above the rating of the
existing City of Seward transformer serving the Producer's facilities.
• The Producer's electrical system characteristics differ from City of Seward's
standard distribution voltages and configurations (Refer to Subsection 3.5:
Standard System Voltages).
• The Producer's facility adversely impacts the quality of power delivered to
adjacent City of Seward secondary distribution system consumers (Refer to
Section 6.0: Interconnected Operating Requirements).
Where the installation of a dedicated transformer is required, the Producer will be
responsible for all labor and material costs associated with the installation.
5.1.5 Protection and Control Devices—Class A Facilities
The general interconnection protective and control requirements for Class A
installations are as follows:
1.Paralleling Device
• A City of Seward-approved circuit breaker is required to allow separation
of the Producer's generation from the City of Seward system during fault
conditions.
• This device must be capable of withstanding 220% of the City of Seward
system voltage at the point of interconnection must have sufficient
interrupting capacity to interrupt the maximum available fault current at its
location, and be locked out when operated by the protective relays
required for interconnection.
2. Over/Under Voltage Protection
The Producer's overvoltage and undervoltage interconnection protective functions
shall detect voltage at the point of interconnection, and shall open the paralleling
device within the times specified in the table below, if the voltage is within the
stated ranges.
Voltage Range [V] Maximum Clearing Time
(% of nominal voltage) (seconds)
V <50% 0.16
50% 5V< 88% 2.00
110% <V< 120% 1.00
V a 120% 0.16
3. Over/Under Frequency Protection
The Producer's over-frequency and under-frequency interconnection protective
functions shall open the paralleling device within the times specified in the table
below, if the frequency is within the stated ranges.
Frequency Range [t] Maximum Clearing Time
(Hz) (seconds)
f>60.5 0.16
f<59.5 0.16
4. Synchronization Protection
For parallel operation, the Producer's facilities shall meet the requirements
pertaining to synchronization specified within IEEE Std. 1547, Parts 4.1.3 and
5.1.2. Specific equipment requirements are as follows:
• Synchronous Generator Interconnection Synchronous generators operated in
parallel with the City of Seward electric system are required to have automatic
relay supervision to verify synchronism for permissive closure of the
interconnection circuit breaker. Manual synchronizing systems are not
approved for interconnected operation with the City of Seward system.
• Induction Generator Interconnection
• Due to the `slip' inherent to induction generators, synchronous operation
cannot be precisely maintained when operating in parallel with the City of
Seward system. Therefore, City of Seward requires that speed-matching
relaying be utilized, set to permit breaker (or contactor) closing when
generator speed is maintained above 95 percent of the City of Seward system
synchronous speed at the point of interconnection.
• Power Converter Interconnection Power converter systems that produce a
fundamental voltage before the paralleling device is closed are capable of
stand-alone operation,thus shall be tested to meet the requirements as outlined
in IEEE Std. 1547, Part 5.1.2.A. All other power converter based systems
shall meet the requirements contained in IEEE 1547,Part 5.1.2.C.
5. Ground Fault Protection
In general, Class A facilities may interconnect to the City of Seward system
without the provision of ground fault protection to limit contributions to ground
faults on the City of Seward system. However, in accordance with IEEE 1547,
Part 4.2.1, the Producer's interconnection equipment must be demonstrated to
cease energization of, and disconnect from the City of Seward system under fault
conditions.
5.1.6 Telemetry and Monitoring— Class A Facilities
1.Telemetry
Typically, Class A facilities will not be required to provide telemetry capability in
order to interconnect with the City of Seward system.
2.Monitoring
Typically, City of Seward will not require power quality monitoring for Class A
facilities. However, where City of Seward determines that there is either a
potential or an indication that the output from the Producer's facility can
adversely affect the standard performance of the City of Seward electric system,
or the quality of power delivered to City of Seward consumers, power quality
monitoring will be required.
5.1.7 Operational Data Logging— Class A Facilities
For Class A facilities, City of Seward generally will not require the installation of
operational data logging equipment. However, as available or maintained by the
Producer, such logs will be made available to City of Seward upon request.
5.1.8 Export Power Control Equipment— Class A Facilities
Generally, for Class A facilities, control equipment for export power is not
required. In certain cases, depending upon the specific contractual agreement
between City of Seward and the Producer, additional control equipment may be
necessary to control the amount and quality of export power. Such cases will be
reviewed on an individual basis.
5.2 Equipment Requirements - Class B Facilities
5.2.1 Application of Minimum Requirements—Class B Facilities.
This portion of the Interconnection Guidelines addresses the general minimum
interconnection equipment necessary for Class B generating facilities. Specific
requirements for each individual proposed facility may vary, depending on factors
such as the location of the interconnection, the number and proximity of adjacent
City of Seward consumers, and the characteristics of the facility proposing to
interconnect to the City of Seward system.
City of Seward has developed these minimum requirements based on the
following assumptions as to the nature of the electric system at the point of
interconnection, and the utilization of the Producer's energy:
• The total non-utility generating capability (kVA), singular or aggregate,
on the interconnecting City of Seward feeder is less than 15 percent of the
averaged annual hourly peak demand(kVA)for that feeder.
• The Producer's generation is generally sized to meet all or a portion of the
Producer's load at the point of interconnection.
• Interconnections to the City of Seward distribution system are typically
made at City of Seward's standard secondary voltages on individual
secondary circuits.
Where proposed interconnections fall outside of the above parameters,
modifications to the minimum requirements may be necessary in order to
maintain the safety, reliability, and operational performance of the City of Seward
system.
5.2.2 Metering Requirements — Class B Facilities
In general, City of Seward only requires in/out watt-hour metering for Class B
facilities. Additional metering requirements will depend on the specifics of the
contractual agreements between City of Seward and the Producer.
5.2.3 Interconnection Disconnect Device—Class B Facilities
An approved manual disconnect device is required for all Class B installations
(Refer to Subsection 4.1.2: Interconnection Disconnect Device)
5.2.4 Interconnection Transformer— Class B Facilities
Generally, for Class B installations, a dedicated transformer for interconnecting
the Producer's facility is not required. However, under certain conditions the
utilization of a dedicated transformer may be required. Examples of such
conditions would include the following:
• The Producer's total rated generating capability is at or above the rating of
the existing City of Seward transformer serving the Producer's facilities.
• The Producer's electrical system characteristics differ from City of
Seward's standard distribution voltages and configurations (Refer to
Subsection 3.5: Standard System Voltages).
• The Producer's facility adversely impacts the quality of power delivered to
adjacent City of Seward secondary distribution system consumers (Refer
to Section 4.1.2: Interconnected Operating Requirements).
Where the installation of a dedicated transformer is required, the Producer will be
responsible for all labor and material costs associated with the installation.
5.2.5 Protection and Control Devices — Class B Facilities
The general interconnection protective and control requirements for Class B
installations are as follows:
1.Paralleling Device
• A City of Seward approved circuit breaker is required to allow separation
of the Producer's generation from the City of Seward system during fault
conditions.
• This device must be capable of withstanding 220% of the City of Seward
system voltage at the point of interconnection, must have sufficient
interrupting capacity to interrupt the maximum available fault current at its
location, and be locked out when operated by the protective relays
required for interconnection.
2.Over/Under Voltage Protection
The Producer's overvoltage and under-voltage interconnection protective
functions shall detect voltage at the point of interconnection, and shall open the
paralleling device within the times specified in the table below, if the voltage is
within the stated ranges.
Voltage Range [V] Maximum Clearing Tim
(% of nominal voltage) (seconds)
V < 50% 0.16
50% 5V< 88% 2.00
110% <V < 120% 1.00
V >_ 120% 0.16
3. Over/Under Frequency Protection
The Producer's over-frequency and under-frequency interconnection protective
functions shall open the paralleling device within the times specified in the table
below, if the frequency is within the stated ranges.
Generator Frequency Range [f] Maximum Clearing Time
Base Raiting (Hz) (seconds)
530kW f>60.5 0.16
f<59.5 0.16
f>60.5 0.16
> 30 kW f< {59.8-57} Adjustable 0.16 - 300
f<59.5 0.16
4.Synchronization Protection
For parallel operation, the Producer's facilities shall meet the requirements
pertaining to synchronization specified within IEEE Std. 1547, Parts 4.1.3 and
5.1.2. Specific equipment requirements are as follows:
• Synchronous Generator Interconnection - Synchronous generators
operated in parallel with the City of Seward electric system are required to
have automatic relay supervision to verify synchronism for permissive
closure of the interconnection circuit breaker. Manual synchronizing
systems are not approved for interconnected operation with the City of
Seward system.
• Induction Generator Interconnection - Due to the "slip" inherent to
induction generators, synchronous operation cannot be precisely
maintained when operating in parallel with the City of Seward system.
Therefore, City of Seward requires that speed-matching relaying be
utilized, set to permit breaker (or contactor) closing when generator speed
is maintained above 95 percent of the City of Seward system synchronous
speed at the point of interconnection.
• Power Converter Interconnection - Power converter systems that
produce a fundamental voltage before the paralleling device is closed are
capable of stand-alone operation, thus shall be tested to meet the
requirements as outlined in IEEE Std. 1547, Part 5.1.2.A. All other power
converter based systems shall meet the requirements contained in IEEE
1547,Part 5.1.2.C.
5. Ground Fault Protection
In general, Class B facilities with a total generating capability less than 40 kVA
may interconnect to the City of Seward system without the provision of ground
fault protection to limit contributions to ground faults on the City of Seward
system. However, in accordance with IEEE 1547, Part 4.2.1, the Producer's
interconnection equipment must be demonstrated to cease energization of the City
of Seward system to which it is connected under fault conditions on the City of
Seward system.
Class B facilities with a total generating capability greater that 40 kVA may be
required to provide ground fault protection, depending upon the possible fault
current contribution from the Producer's facilities to City of Seward system
ground faults. The requirement will be determined on an individual basis by City
of Seward.
5.2.6 Telemetry and Monitoring — Class B Facilities
1.Telemetry
Typically, Class B facilities will not be required to provide telemetry capability in
order to interconnect with the City of Seward system.
2. Monitoring
Generally, City of Seward will not require power quality monitoring for Class B
facilities. However, where City of Seward determines that there is either a
potential or an indication that the output from the Producer's facility can
adversely affect the standard performance of the City of Seward electric system,
or the quality of power delivered to City of Seward consumers, power quality
monitoring will be required.
5.2.7 Operational Data Logging—Class B Facilities
For Class B facilities, City of Seward generally will not require the installation of
operational data logging equipment. However, as available or maintained by the
Producer, such logs will be made available to City of Seward upon request.
5.2.8 Export Power Control Equipment— Class B Facilities
Generally for Class B facilities, control equipment for export power is not
required. In certain cases, depending upon the specific contractual agreement
between City of Seward and the Producer, additional control equipment may be
necessary to control the amount and quality of export power. Such cases will be
reviewed on an individual basis.
5.3 Equipment Requirements - Class C Facilities
5.3.1 Application of Minimum Requirements—Class C Facilities
This portion of the Interconnection Guidelines addresses the general minimum
interconnection equipment necessary for Class C generating facilities. Specific
requirements for each individual proposed facility may vary, depending on factors
such as the location of the interconnection, the number and proximity of adjacent
City of Seward consumers, and the characteristics of the facility proposing to
interconnect to the City of Seward system.
• City of Seward has developed these minimum requirements based on the
following assumptions as to the nature of the electric system at the point
of interconnection, and the utilization of the Producer's energy:
• The total non-utility generating capability (kVA), singular or aggregate,
on the interconnecting City of Seward feeder is less that 20 percent of the
averaged annual hourly peak demand (kVA) for that feeder.
• The Producer's generation is generally sized to meet all or a portion of the
Producer's load at the point of interconnection.
• Interconnections to the City of Seward distribution system are typically
made at City of Seward's standard secondary voltages on individual
secondary circuits.
Where proposed interconnections fall outside of the above parameters,
modifications to the minimum requirements may be necessary in order to
maintain the safety,reliability, and operational performance of the City of Seward
system.
5.3.2 Metering Requirements—Class C Facilities
In general, the minimum required City of Seward metering for Class C facilities is
in/out watt-hour metering. Additional metering requirements, such as reactive
power energy metering (VAr-hour), real or reactive power demand metering, or
time-of-delivery metering will depend on the specifics of the contractual
agreements between City of Seward and the Producer.
5.3.3 Interconnection Disconnect Device-Class C Facilities
An approved manual disconnect device is required for all Class C installations
(Refer to Subsection 4.1.2: Interconnection Disconnect Device).
5.3.4 Interconnection Transformer—Class C Facilities
City of Seward requires that a dedicated transformer be utilized to interconnect all
Class C installations with the City of Seward system. In cases where an existing
City of Seward transformer serves the Producer at the proposed interconnection
point, that transformer may serve as the dedicated transformer, provided the
following conditions are met:
• The Producer's maximum generating capacity (kVA) does not exceed the
nominal rating of the transformer.
• No other City of Seward consumers are served by the existing transformer.
Where the installation of a dedicated transformer is required, the Producer will be
responsible for all associated labor and material costs.
5.3.5 Protection and Control Devices—Class C Facilities
The general interconnection protective and control requirements for Class C
installations are as follows:
1. Paralleling Device
• A City of Seward approved circuit breaker is required to allow separation
of the Producer's generation from the City of Seward system during fault
conditions.
• This device must be capable of withstanding 220% of the City of Seward
system voltage at the point of interconnection, must have sufficient
interrupting capacity to interrupt the maximum available fault current at its
location, and be locked out when operated by the protective relays
required for interconnection.
2. Over/Under Voltage Protection
The Producer's overvoltage and undervoltage interconnection protective functions
shall detect voltage at the point of interconnection, and shall open the paralleling
device within the times specified in the table below, if the voltage is within the
stated ranges.
Voltage Range [V] Maximum Clearing Time
(% of nominal voltage) (seconds)
V<50% 0.16
50% 5V<88% 2.00
110% <V< 120% 1.00
Vz120% 0.16
3. Over/Under Frequency Protection
The Producer's over-frequency and under-frequency interconnection protective
functions shall open the paralleling device within the times specified in the table
below, if the frequency is within the stated ranges.
Frequency Range [f] Maximum Clearing Time
(Hz) (seconds)
f>60.5 0.16
f< {59.8-571 Adjustable 0.16 - 300
f< 57 0.16
4.Synchronization Protection
For parallel operation, the Producer's facilities shall meet the requirements
pertaining to synchronization specified within IEEE Std. 1547, Parts 4.1.3 and
5.1.2. Specific equipment requirements are as follows:
• Synchronous Generator Interconnection - Synchronous generators
operated in parallel with the City of Seward electric grid are required to
have automatic relay supervision to verify synchronism for permissive
closure of the interconnection circuit breaker. Manual synchronizing
systems are not approved for interconnected operation with the City of
Seward system.
• Induction Generator Interconnection - Due to the "slip" inherent to
induction generators, synchronous operation cannot be precisely
maintained when operating in parallel with the City of Seward system.
Therefore, City of Seward requires that speed-matching relaying be
utilized, set to permit breaker (or contactor) closing when generator speed
is maintained above 95 percent of the City of Seward system synchronous
speed at the point of interconnection
• Power Converter Interconnection - Power converter systems that
produce a fundamental voltage before the paralleling device is closed are
capable of stand-alone operation, thus shall be tested to meet the
requirements as outlined in IEEE Std. 1547, Part 5.1.2.A. All other power
converter based systems shall meet the requirements contained in IEEE
1547,Part 5.1.2.C.
5. Ground Fault Protection
Ground Fault Protection is required for all Class C facilities. This protection
senses phase-to-ground faults on the City of Seward system and initiates tripping
of the interconnection circuit breaker in order to prohibit continuous contribution
to such faults from the Producer's facilities.
The Producer shall provide an appropriate ground fault protection scheme and
coordinate with City of Seward on trip settings. Prior to authorization for
interconnected operation, City of Seward shall review and approve the ground
fault protection scheme and trip settings.
6. Phase-Fault Protection
Phase-Fault Protection is required for all Class C facilities. This protection senses
phase-to-phase or three-phase faults on the City of Seward system and initiates
tripping of the interconnection circuit breaker in order to prohibit continuous
contribution to such faults from the Producer's facilities. Voltage-restrained over-
current relaying, or impedance relaying, is required for phase-fault protection.
Prior to authorization for interconnected operation, City of Seward shall review
and approve the phase-fault protection scheme
and trip settings.
5.3.6 Telemetry and Monitoring— Class C Facilities
1. Telemetry
Typically, Class C facilities will not be required to provide telemetry capability in
order to interconnect with the City of Seward system. However, depending upon
the specific installation characteristics and contractual agreements, such capability
may be required. All cases will be reviewed on an individual basis by City of
Seward.
2. Monitoring
Power quality monitoring will be required in cases where City of Seward
determines that there is either a potential or an indication that the output from the
Producer's facility can adversely affect the standard performance of the City of
Seward electric system or the quality of power delivered to City of Seward
consumers.
Depending upon the specific requirements, the monitoring system may be
required to detect and record such disturbances as waveform distortions, electrical
noise, voltage sags or swells, frequency deviations, and harmonic distortions. The
requirement for power quality monitoring will be determined by City of Seward
on an individual basis.
5.3.7 Operational Data Logging—Class C Facilities
All Class C generating facilities are required to have and maintain a seven(7) day
digital data logger which records volts, watts, VArs, frequency, and the status of
key system informational elements, including relay targets and interconnection
circuit breaker trip operations. The data logger shall provide a standard time
stamp for tracked variables, including date and time of day (HH:MM:SS). City of
Seward shall have the right to review these logs, especially in analyzing system
disturbances.
5.3.8 Export Power Control Equipment—Class C Facilities
For cases where the Producer and City of Seward formulate a Power Purchase
Agreement, the following equipment may be necessary in accordance with the
terms of the specific contract:
1.Voltage Regulator/Power Factor Controller
The Producer may be required to utilize either an approved voltage regulator or
power factor controller in order to control voltage within specified limits.
Where a voltage regulator is utilized for this purpose, it must be capable of
maintaining the nominal City of Seward interconnection point voltage under
steady-state conditions, without hunting, and within ±0.5 percent of the required
set point (as directed by City of Seward).
Where a power factor controller is utilized, it must be capable of maintaining the
power factor setting within ±1.0 percent, at full load, at any point between 90
percent lagging and 95 percent leading. For export power to the City of Seward
distribution system, a power factor of 1.0 is generally preferred.
The Producer's generation may be required to follow a City of Seward specified
voltage or VAr schedule on an hourly, daily, or seasonal basis depending on the
specific terms of the power purchase contract. The Producer shall coordinate with
City of Seward Power Control Center for specific operational instructions and
issues.
2.Direct Digital Control
Direct digital control (supervisory control) of unit output from City of Seward's
Power Control Center may be required if the unit is to be dispatchable by City of
Seward under agreement.
3.Power System Stabilizer
A power system stabilizer (PSS) control system may be required to provide
necessary stability to the electrical system when system power oscillations occur.
The necessity of a PSS will depend on the generator capacity and characteristics,
the location of the interconnection to the City of Seward system, and the system
voltage level at the point of interconnection.
5.4 Equipment Requirements - Class D Facilities
5.4.1 Application of Minimum Requirements — Class D Facilities
This portion of the Interconnection Guidelines addresses the general minimum
interconnection equipment necessary for Class D generating facilities. Specific
requirements for each individual proposed facility may vary, depending on factors
such as the location of the interconnection, the number and proximity of adjacent
City of Seward consumers, and the characteristics of the facility proposing to
interconnect to the City of Seward system.
City of Seward has developed these minimum requirements based on the
following assumptions as to the nature of the electric system at the point of
interconnection and the utilization of the Producer's energy:
• The total non-utility generating capability (kVA), singular or aggregate,
on the interconnecting City of Seward feeder is less that 25 percent of the
averaged annual hourly peak demand (kVA) for that feeder.
• The Producer's generation is generally sized to meet all or a portion of the
Producer's load at the point of interconnection.
• Interconnections to the City of Seward distribution system are typically
made at City of Seward's standard distribution primary voltages of
7.2/12.47 kV or 14.4/24.94 kV.
Where proposed interconnections fall outside of the above parameters,
modifications to the minimum requirements may be necessary in order to
maintain the safety, reliability, and operational performance of the City of Seward
system.
5.4.2 Metering Requirements - Class D Facilities
In general, the minimum required City of Seward metering for Class D facilities is
in/out watt-hour metering. Additional metering requirements, such as reactive
power energy metering (VAr-hour), real or reactive power demand metering, or
time of delivery metering will depend on the specifics of any contractual
agreements between City of Seward and the Producer.
5.4.3 Interconnection Disconnect Device - Class D Facilities
An approved manual disconnect device is required for all Class D installations
(Refer to Subsection 4.1.2: Interconnection Disconnect Device.).
5.4.4 Interconnection Transformer - Class D Facilities
City of Seward requires that a dedicated transformer be utilized to interconnect all
Class D installations with the City of Seward system.
For cases where an existing City of Seward transformer serves the Producer at the
proposed interconnection point, that transformer may serve as the dedicated
transformer, provided the following conditions are met:
• The Producer's maximum generating capacity (kVA) does not exceed the
nominal rating of the transformer.
• No other City of Seward consumers are served by the existing transfonner.
Where the installation of a dedicated transformer is required, the Producer will be
responsible for all associated labor and material costs.
5.4.5 Protection and Control Devices - Class D Facilities
The general interconnection protection and control requirements for Class D
installations are as follows:
1. Paralleling Device
• A City of Seward approved circuit breaker is required to allow separation
of the Producer's generation from the City of Seward system during fault
conditions.
• This device must be capable of withstanding 220% of the City of Seward
system voltage at the point of interconnection, must have sufficient
interrupting capacity to interrupt the maximum available fault current at its
location, and be locked out when operated by the protective relays
required for interconnection.
2.Over/Under Voltage Protection
The Producer's overvoltage and under-voltage interconnection protective
functions shall detect voltage at the point of interconnection, and shall open the
paralleling device within the times specified in the table below, if the voltage is
within the stated ranges.
Voltage Range [V] Maximum Clearing Time
(% of nominal voltage) (seconds)
V<50% 0.16
50% <_V<88% 2.00 _
I 110% <V< 120% 1.00
V >_ 120% 0.16
3. Over/Under Frequency Protection
The Producer's over-frequency and under-frequency interconnection protective
functions shall open the paralleling device within the times specified in the table
below, if the frequency is within the stated ranges.
Frequency Range [f] Maximum Clearing Tim
(Hz) (seconds)
f>60.5 0.16
f< {59.8-57} Adjustable 0.16 - 300
f< 57 0.16
4.Synchronization Protection
For parallel operation, the Producer's facilities shall meet the requirements
pertaining to synchronization specified within IEEE Std. 1547, Parts 4.1.3 and
5.1.2. Specific equipment requirements are as follows:
• Synchronous Generator Interconnections - Synchronous generators
operated in parallel with the City of Seward electric grid are required to
have automatic relay supervision to verify synchronism for permissive
closure of the interconnection circuit beaker. Manual synchronizing
systems are not approved for interconnected operation with the City of
Seward system.
• Induction Generator Interconnection - Due to the "slip" inherent to
induction generators, synchronous operation cannot be precisely
maintained when operating in parallel with the City of Seward system.
Therefore, City of Seward requires that speed-matching relaying be
utilized, set to permit breaker (or contactor) closing when generator speed
is maintained above 95 percent of the City of Seward system synchronous
speed at the point of interconnection.
• Power Converter Interconnection - Power converter systems that
produce a fundamental voltage before the paralleling device is closed are
capable of stand-alone operation, thus shall be tested to meet the
requirements as outlined in IEEE Std. 1547, Part 5.1.2.A. All other power
converter based systems shall meet the requirements contained in IEEE
1547, Part 5.1.2.C.
5. Ground Fault Protection
Ground Fault Protection is required for all Class D facilities. This protection
senses phase-to-ground faults on the City of Seward system and initiates
tripping of the interconnection circuit breaker in order to prohibit continuous
contribution to such faults from the Producer's facilities.
The Producer shall provide an appropriate ground fault protection scheme and
coordinate with City of Seward on trip settings. Prior to authorization for
interconnected operation, City of Seward shall review and approve the ground
fault protection scheme and trip settings.
6.Phase-Fault Protection
Phase-Fault Protection is required for all Class D facilities. This protection
senses phase-to-phase or three-phase faults on the City of Seward system and
initiates tripping of the interconnection circuit breaker in order to prohibit
continuous contribution to such faults from the Producer's facilities.
Voltage-restrained over-current relaying or impedance relaying is required for
phase-fault protection. Prior to authorization for interconnected operation,
City of Seward shall review and approve the phase-fault protection scheme
and trip settings.
7. Transfer Trip Capability
Transfer trip capability is required to allow City of Seward system protection
to disconnect the Producer's facility in order to ensure that City of Seward
system protection operates properly during system faults or disturbances. The
Producer shall provide a dedicated, isolated voice grade fiber-optic
communications circuit for this purpose.
5.4.6 Telemetry and Monitoring — Class D Facilities
1. Telemetry
All Class D facilities are required to have equipment to continuously telemeter
data to the City of Seward Power Control Center via approved data
communications lines provided by the Producer. Telemetering of generation and
transmission data is required to enable the system dispatchers to continually
monitor the power system from City of Seward's Power Control Center.
As a minimum, the following data and measurements shall be telemetered to City
of Seward:
• Energy Flows (kWh)
• Real Power Flows (kW)
• Reactive Power Flows (kVAr)
• Voltage at Point of Interconnection
• Paralleling Device(Interconnection circuit breaker) status
.
2. Monitoring
Power quality monitoring will be required in cases where City of Seward
determines that there is either a potential or an indication that the output from the
Producer's facility can adversely affect the standard performance of the City of
Seward electric system or the quality of power delivered to City of Seward
consumers.
Depending upon the specific requirements, the monitoring system may be
required to detect and record such disturbances as waveform distortions, electrical
noise, voltage sags or swells, frequency deviations, and harmonic distortions. The
requirements for power quality monitoring will be determined by City of Seward
on an individual basis.
5.4.7 Operational Data Logging — Class J Facilities
All Class D generating facilities are required to have and maintain a seven(7)day
digital data logger which records volts, watts, VArs, frequency, and the status of
key system elements, including the interconnection circuit breaker status
operations and relay targets. The data logger shall provide a standard time stamp
for tracked variables, including date and time of day (HH:MM:SS). City of
Seward shall have the right to review these logs, especially in analyzing system
disturbances.
5.4.8 Export Power Control Equipment — Class D Facilities
For cases where the Producer and City of Seward formulate a Power Purchase
Agreement, the following equipment may be necessary in accordance with the
terms of the specific contract:
1.Voltage Regulator/Power Factor Controller
The Producer may be required to utilize either an approved voltage regulator or
power factor controller in order to control voltage within specified limits.
Where a voltage regulator is utilized for this purpose, it must be capable of
maintaining the nominal City of Seward interconnection point voltage under
steady-state conditions, without hunting, and within ±0.5 percent of the required
set point(as directed by City of Seward).
Where a power factor controller is utilized, it must be capable of maintaining the
power factor setting within ±1.0 percent, at full load, at any point between 90
percent lagging and 95 percent leading. For export power to the City of Seward
distribution system, a power factor of 1.0 is generally preferred. The generator
may be required to follow a City of Seward specified voltage or VAr schedule on
an hourly, daily, or seasonal basis depending on the specific terms of the power
purchase contract. The Producer shall coordinate with City of Seward Power
Control Center for specific operational instructions and issues.
2.Direct Digital Control
Direct digital control (supervisory control) of unit output from City of Seward's
Power Control Center may be required if the unit is to be dispatchable by City of
Seward under agreement.
3. Power System Stabilizer
A Power System Stabilizer (PSS) control system may be required to provide
necessary stability to the electrical system when system power oscillations occur.
The necessity of a PSS will depend on the generator capacity and characteristics,
the location of the interconnection to the City of Seward system, and the system
voltage level at the point of interconnection.
5.5 Voice and Data Communications
The capability to make direct verbal communications via telephone with the Producer or
the operator of Producer's facility is required for all facility classifications. Voice
communications must be provided so that operating instructions or notification of
system conditions can be given to the Producer or any designated operator of the
Producer's equipment as necessary. Accordingly, the Producer is required to provide
a 24-hour accessible voice contact telephone number to City of Seward.
For larger classifications of facilities, data communications capability is required so that
electronic data and/or operating instructions can be transferred between City of Seward
and the Producer's facility as necessary.
5.6 Producer-Owned Electrical Distribution Systems
If the Producer owns, maintains, or constructs a primary electrical distribution or
transmission system tap line (operated 7.2 kV and above), then, at the expense of the
Producer, City of Seward shall install, own, and maintain the following equipment at the
tap point:
• Fault interruption protection device(s)
• Manual isolating disconnect(s),
• Metering installations
• Supervisory control equipment(as required)
6 INTERCONNECTED OPERATING REQUIREMENTS
The general operating requirements and criteria contained in this section apply to all non-utility
generation facilities interconnected to the City of Seward electric system. Any Producer
operating outside of these requirements, unless provided expressed permission by City of
Seward, will not be permitted to operate in parallel with City of Seward and will be responsible
for any and all remediation actions and associated costs prior to gaining approval for parallel
operation. The consequences for failing to meet any of these requirements are immediate
disconnection and payment of all associated costs.
6.1 Approval for Parallel Operation
The Producer may not commence parallel operation of generation facilities without fmal
written approval from City of Seward. City of Seward reserves the right to inspect, test,
or perform witness testing of the Producer's equipment or devices associated with the
interconnection.
6.2 Discontinuance of Parallel Operation
The Producer shall discontinue parallel operation when requested by City of Seward:
• To facilitate maintenance, test, or repair of utility facilities;
• During system emergencies;
• When the Producer's generating equipment is interfering with City of Seward
consumers and/or other power producers connected to the City of Seward electric
grid;
• When an inspection of the Producer's generating equipment reveals either a lack
of adequate equipment maintenance necessary to protect the City of Seward
electric grid or conditions that could be hazardous to the City of Seward system.
6.3 Islanded Operation
Unless provided expressed approval by City of Seward, non-utility generators are not
allowed to operate in an islanded mode with any portion of the City of Seward electric
grid. Once the City of Seward circuit(s) connecting the Producer's generating facility is
de-energized, for any reason, the Producer shall disconnect from the City of Seward
electric grid and will not be permitted to reconnect to it until City of Seward has re-
energized its system.
6.4 Voltage Requirements
6.4.1 Voltage Levels & Fluctuations
Per IEEE Std. 1547, Parts 4.1 and 4.2, the Producer's voltage (at the point of
interconnection) and interconnection equipment shall adhere to the ratings and
recommendations contained in the current American National Standards Institute
(ANSI) C84.1 Standard. When operating in parallel with the City of Seward
system, the Producer's voltage must be maintained within ±5 percent of the
standard City of Seward system voltage at the point of interconnection.
Voltage fluctuations may be noticeable as visual lighting variations (flicker) and
can damage to, or disrupt the operation of electronic equipment. The Producer
shall adhere to the requirements of IEEE Std. 1547, Part 4.3 regarding power
quality.
6.4.2 Voltage Regulation and Reactive Power Requirements
Operation of the Producer's generator must not adversely affect the voltage
regulation of the City of Seward electric grid. Per IEEE Std. 1547, Part 4.1.1, the
Producer shall not actively regulate City of Seward system voltage at the point of
• 4
interconnection, and shall not cause City of Seward system voltage to deviate
from the requirements within ANSI C84.1,Range A.
For synchronous generators, sufficient generator reactive power capability shall
be provided to withstand normal voltage changes on the City of Seward system.
The generator reactive power requirements, voltage regulation, and transformer
ratio settings will be jointly determined by City of Seward and the Producer to
ensure intersystem coordinating and operating capability. Producers are required
to provide their own reactive power requirements in order to generate within the
specified power factor range.
The parallel operation of the Producer's generating equipment with the City of
Seward system will not, under any circumstance, be permitted to cause any
reduction in the quality of service being provided to City of Seward consumers.
6.5 Generator Droop Requirements
Governor characteristics shall be set to provide a 5 percent droop characteristic (a 0.15
Hz change in the generator speed will cause a 5 percent change in the generator load).
Governors must be operated unrestrained to ensure that droop will not exceed 5% and
that system frequency is properly regulated.
6.6 Harmonics
Harmonic distortion is defined as the ratio of the root mean square (rms) value of the
harmonic to the rms value of the fundamental voltage or current (refer to IEEE Standard
519). Distortion of the harmonic content of voltage and/or current waveforms can cause
telecommunication interference, disable solid-state equipment, overheat transformers,
and create resonant over-voltages. In order to protect City of Seward equipment and
consumers from damage,harmonics must be maintained within acceptable limits.
The Producer shall not exceed the current harmonic limits contained in IEEE Std. 1547,
Part 4.3.3. In addition, the Producer shall not produce voltage distortion in excess of the
limits specified in IEEE Std. 519, Section 11.5. City of Seward advises that the Producer
consider and account for harmonics in the early stages of facility planning and design.
If excessive harmonic distortion is suspected, voltage and current distortion
measurements will be performed to determine whether the Producer's equipment is a
source of, or contributor to, excessive distortion. If the Producer's facility is found to be
the source of excessive harmonic distortion, the Producer will be billed for the
investigation costs, and will be held responsible for corrective action to bring the
harmonic content within the referenced limits.
6.7 Power Factor Requirements
City of Seward requires that all interconnected non-utility generation maintain power
factors within the range of 0.95 lagging (supplying reactive volt-amperes) and 0.95
leading (absorbing reactive volt-amperes) at the point of interconnection. Generators
operating with power factors outside of this range limit may be subject to reactive power
supply charges, unless specific provisions are made in the interconnection agreement.
a !
Generally, Producers are responsible for providing reactive power necessary to maintain
power factors within the specified range when operating in parallel with the City of
Seward electric grid. In certain cases, Producers may contract with City of Seward for the
provision of ancillary services for reactive power support in order to maintain operation
within the specified limits.
6.8 Coordination with the City of Seward Protective System
The proper coordination of the Producer's interconnection protective functions with the
City of Seward protection system is of critical importance to the safety and reliability of
the electrical supply grid. Accordingly, parallel operation will not be authorized or
allowed until all required interconnection protective functions and settings have been
reviewed and approved by City of Seward, and properly coordinated with the City of
Seward protective system. Specifics on required protective functions and settings can be
found in Section 4.0: Interconnection Equipment Requirements.
Because most short circuits (faults) on overhead lines are of a temporary nature, City of
Seward employs the use of automatic circuit reclosers (ACR) to automatically reclose
circuit breakers on faulted lines one or more times within a few electrical cycles after
they have tripped. This practice improves the continuity of service to City of Seward
consumers by allowing temporary faults to clear before primary protective devices
operate to de-energize all or portions of the circuit.
The protective relays specified by City of Seward for parallel generation interfaces are
intended to disconnect the Producer's generation from faulted or isolated lines before
reclosing occurs.
To ensure that the City of Seward protection system operates properly, the Producer's
protective equipment shall be set to sense City of Seward system fault conditions and
discontinue parallel operation with City of Seward before City of Seward automatic
circuit reclosing occurs. The Producer shall not resume parallel operation until:
• A period of five (5) minutes has transpired following the initial sensing of a fault
condition, or,
• City of Seward provides authorization to resume parallel operation.
6.9 Maintenance & Testing
6.9.1 Interconnection Equipment Maintenance
The Producer shall maintain its interconnection and interface equipment in good
order. City of Seward reserves the right to inspect all such equipment at any time.
City of Seward also reserves the right to inspect the Producer's facilities whenever
it appears that the Producer is operating in a manner unacceptable or hazardous to
the integrity of the City of Seward system, or outside of the operating limits
specified in these guidelines or contained in the Agreement for Interconnection.
The Producer is responsible for ensuring and maintaining the safe, proper
operational condition of all interconnection equipment located on the Producer's
side of the interconnection. Maintenance records, procedures, and results shall be
made available for City of Seward's review and records as required. Depending
• ^s I
upon the characteristics and utility of the facility, City of Seward may elect to
observe and inspect maintenance work in order to assure the safety and integrity
of the interconnection.
For larger generation installations, such as Classes C and D, specific scheduling
and interval requirements for interconnection equipment maintenance may be
formulated within the Agreement for Interconnection. Such requirements may be
based on equipment duty,number of operations, ambient conditions, etc.
The Producer must coordinate and schedule maintenance on interconnection
equipment with City of Seward to ensure the safety of City of Seward personnel
and to minimize the disruption of electric service to City of Seward consumers.
6.9.2 Protective Systems Functional Testing
The Producer's facilities shall meet the testing criteria contained in IEEE Std.
1547.1 "IEEE Standard conformance Test Procedures for Equipment
Interconnecting Distributed Resources with Electric Power Systems', and the
Producer shall grant City of Seward the right to observe functional testing of the
Producer's facilities. Periodic functional testing of protective equipment (i.e.,
circuit breakers, switches, disconnect devices, protective relaying, etc.) shall be
defined and coordinated with City of Seward within the Agreement for
Interconnection between City of Seward and the Producer. Generally, functional
testing of protective relay settings and interconnection circuit breaker operations
shall be performed by the Producer every three (3) years. Documented test results
must be provided to City of Seward within five (5) working days after the
completion of tests. The Producer is responsible to ensure that protective relaying
and control systems have available and accessible sensing input terminals or test
ports, in order to perform and validate functional testing (see Section X4.1.8:
Protection&Control System Testing Conformance).
The Producer shall grant City of Seward the right to review and modify the
functional testing requirements, as necessary, during the life of the facility.
7 DEFINITIONS
Ampere(s) - The unit of electrical current.
American National Standards Institute (ANSI) - Private, non-profit organization
responsible for approving US standards in many areas, including computers and
communications.
Area Electric Power System (AEPS)—EPS serving local EPSs.
Automatic Circuit Reclosers (ACR) - Circuit breaker equipped with a mechanism that can
automatically close the breaker after it has been opened due to a fault.
Class A Facility—Non-utility generator installation of 10-kVA output or less, where the
system stiffness ratio is at least 100.
Class B Facility— Non-utility generator installation with an output of between 10-kVA and
100-kVA, where the system stiffness ratio is at least 50.
Class C Facility - Non-utility generator installation with an output of between 100-kVA and
1000-kVA, where the system stiffness ratio is at least 30.
Class D Facility - Non-utility generator installation with an output of between 1000-kVA and
5000-kVA, where the system stiffness ratio is at least 20.
Converter - Device for changing alternating current to direct current, or direct current to
alternating current.
Current - The amount of charge that flows past a give point, per unit of time.
Current Transformers - Reduce system currents to levels that are appropriate for
instrumentation and/or protection circuits.
Distortion -The alteration of the original shape (or other characteristic) of an object, image,
sound, waveform or other form of information or representation.
Distributed generation - Electricity generates from many small energy sources. It has also
been called on-site generation, dispersed generation, embedded generation, decentralized
generation, decentralized energy or distributed energy.
Distribution Primary Voltage - Voltage applied to the terminals of the primary winding of a
transformer.
Distribution Secondary Voltage - Voltage across the secondary winding of a distribution
transformer.
Electrical Noise - Noise generated by electrical devices, for example, motors, engine ignition,
power lines, and so on, and propagated to the receiving antenna direct from the noise source.
Electric Power System (EPS) —Facilities that deliver power to a load.
Electric Transmission Voltage—Voltage transferred from one point to another in an electric
power system.
Feeder Line - A primary or main distribution power line that distributes or "feeds" power from
a substation to the surrounding area, like spokes from a wheel. Feeder lines typically have many
smaller "taps" or "pull-off" lines that lead to transformers and service lines serving homes and
businesses.
Frequency Deviations— Interference in the number of occurrences of a repeated event per
unit of time. A change in Interconnection frequency.
Gang - A group of wires attached as a collection
Grid - A power transmission system.
Grid Interactive Equipment - Grid-connected or utility-interactive PV systems are designed
to operate in parallel with and interconnected with the electric utility grid.
Ground Fault - The temporary current in the ground line, caused by a failing electrical
component or interference from an external electrical source such as a thunderstorm.
Institute of Electrical and Electronics Engineers (IEEE) -Non-profit, technical
professional association of more than 360,000 individual members in approximately 175
countries. IEEE sponsors many electrical and electronic standards.
Interconnection -A link between power systems enabling them to draw on one another's
reserves in time of need and to take advantage of energy cost differentials resulting from such
factors as load diversity, seasonal conditions, time-zone differences, and shared investment in
larger generating units.
Islanding refers to the condition of a distributed generation(DG) generator continuing to power
a location even though power from the electric utility is no longer present. Example a building
that has a wind energy conversion system that feed power back to the electrical grid; in case of a
power blackout, if the wind energy conversion system continue to power the building,the
building becomes an "island" with power surrounded by a "sea" of unpowered buildings.
Harmonic Distortion -The presence of frequencies in a device's output not present in the
input signal and is multiples of components of the input signal.
Induction Generator - Non-synchronous alternating-current generator whose construction is
identical to that of an AC motor which is driven above synchronous speed by external sources of
mechanical power.
Independent Power Producer (IPP) or Non-utility generator (NUG) -Entity, which is
not a public utility, but which owns facilities to generate electric power for sale to utilities and
end users. NUGs may be privately-held facilities, cooperatives such as rural solar or wind energy
producers, and non-energy industrial concerns capable of feeding excess energy into the system.
Inverter -A switch-mode voltage regulator in which output voltage is negative with respect to
its input voltage.
Load - An end-use device or customer that receives power from the electric system.
Manual Disconnect Device—Means of electrically isolating the non-utility generating
facility.
National Electric Code (NEC) - United States standard for the safe installation of electrical
wiring and equipment. It is part of the National Fire Codes series published by the National Fire
Protection Association(NFPA). "National Electrical Code" and "NEC" are registered trademarks
of the NFPA. While the NEC is not itself U.S. law, NEC use is commonly mandated by state or
local law, as well as in many jurisdictions outside of the United States. The NEC codifies the
requirements for safe electrical installations into a single, standardized source.
National Electric Safety Code (NESC) - Industry-accepted safety standard for overhead and
underground electric utility and communications utility installations.
Parallel (Electric) -Two or more circuit components connected like the rungs of a ladder. A
parallel circuit is a different path for current through each of its components. A parallel circuit
provides the same voltage across all its components.
Paraileiing Device - Each device is directly connected to the power source and receives the
same voltage.
Parallel Operation—A parallel generation electrically connected to the COS power system
which must be considered in the electrical protection of the COS facilities.
Potential Transformers - Reduce higher system voltages to lower values that are appropriate
for instrumentation and/or protection circuits.
Power Grid - Process of transferring electric energy from one point to another in an electric
power system.
Reactive Power- Portion of electricity that establishes and sustains the electric and magnetic
fields of alternating-current equipment.
Real Power-The component of apparent power that represents true work: expressed in watts,
it is equal to volt-amperes multiplied by the power factor.
Separate Operating System —A generating system, which has no capability or possibility of
connecting and operating in parallel with the COS of Seward system.
Stiffness Ratio—The ratio of the available electric system fault current at the interconnection
point to the maximum-rated current of the Producer's facility.
Switchgear - The aggregate of switching devices for a power or transforming station, or for
electric motor control.
Synchronous Generator - Machine that generates an alternating voltage when its armature or
field is rotated by a motor, an engine, or other means. The output frequency is exactly
proportional to the speed at which the generator is driven.
Tap Line - Tap lines are electric feeder lines with limited capacity that run from a main
distribution line to a few consumers.
Telemetry Equipment—Device that measures, transmits, and receives for indicating or
recording the value of a quantity at a distance.
Transfer Trip - Basically, the reclosure station is equipped to send a signal to the wind farm to
tell it to go off line, and the wind farm is equipped to receive and act on that signal.
Transformer - An inductive electrical device for changing the voltage of alternating current.
Underwriter's Laboratory (UL) - U.S. for-profit product safety testing and certification
organization.
Uninterruptible Power Systems (UPS) - An uninterruptible power supply(UPS) is a device
that maintains power in the event of a failure. A UPS commonly includes a battery that is kept
charged and ready. When power fails, the battery supplies power, as long as it lasts. When the
battery fails, a UPS may contain circuitry that triggers an orderly shutdown.
Voltage - A volt-ampere (VA) is the voltage times the current feeding an electrical load. A
kilovolt-ampere (kVA) is 1000 volt-amperes,
Volt-Ampere Reactive (VAR) - The unit of reactive power in the International System; it is
equal to the reactive power in a circuit carrying a sinusoidal current when the product of the root-
mean-square value of the voltage, expressed in volts, by the root-mean-square value of the
current, expressed in amperes, and by the sine of the phase angle between the voltage and the
current, equals 1.
Voltage Drop - Reduction in voltage in an electrical circuit between the source and load.
Voltage Spike - In electrical engineering, spikes are fast, short duration electrical transients in
voltage (voltage spikes), current(current spike), or transferred energy (energy spikes) in an
electrical circuit.
Waveform Distortion —Electrical device whose output is not identical, in form, to the input
signal.
APPLICATION FOR INTERCONNECTION OF
ALTERNATIVE POWER GENERATION
Customer Name: Customer Number:
Contact Person:
Address:
City: State: Zip Code:
Phone: Fax: E-mail Address:
Alternate Contact Phone:
Location of Proposed Project(legal description):
The Interconnection Application Procedures and general Permit requirements are
addressed in the City of Seward Code Section 14.15.415, Interconnection Requirements.
The Interconnection Application must be accompanied with complete documentation of
the Alternate Power System equipment including but not limited to: site location,
schematics; wiring diagrams; performance specifications; descriptions of energy storage
devices, circuit protection equipment, regulating equipment, automatic disconnect
equipment, and any other proprietary device provided by the equipment manufacturers.
For Alternative Power System facilities within the Seward city limits, the applicant must
obtain and provide the documentation required for obtaining a Building Permit.
Additionally,the following information will be used to help properly design the customer
interconnection. This information is not intended as a commitment or contract for billing
purposes.
Note: For net metering applications, the total generator size may not exceed 25KW total
output, and may not be more than 1.5%of the demand per circuit.
Note: If any work is required to be performed on the system side of the meter by the City
of Seward Electric Crew, then a job order must be started and those costs will be paid by
the applicant.
Wind Turbine:
Wind Turbine Manufacturer: Model No.
Supplement No. ED-0l
6/13/2012 pj ( 063
r ..
Rated Power Output(Watts): at mph Wind Speed.
Total Site Load(Watts)
Residential Commercial Industrial
Generator Rating (Watts) Annual Estimated Generation(KWH)
Inverter Manufacturer: Model No:
UL 1741 "Utility Interactive" Listed: Yes No
IEEE 1547 Complaint: Yes No
Solar PV Type:
Solar Panel Manufacturer Model No.
Quantity of Solar Panels: x Nominal Rating Watts (Each) =Total Wattage
Total Site Load(Watts)
Residential Commercial Industrial
Generator Rating (Watts) Annual Estimated Generation(KWH)
Type of Array Mounting: Fixed Tracking
Inverter Manufacturer: Model No.
UL 1741 "Utility Interactive" Listed: Yes No
IEEE 1547 Complaint: Yes No
Other Qualified Alternative Energy Generator:
Describe:
Customer Signature: Date:
Title:
Supplement No. ED-01
6/13/2012 eq
Please direct all technical inquires for interconnection to the City of Seward distribution system
and return this application to the City of Seward Electric Department before purchasing and
installing an Alternative Power Generator:
The Electric Department Point of Contact for technical inquires is:
Jeff Estes
Operations Supervisor
Phone: 907-224-4072 Fax: 907-224-4087
Email:jestes@a,cityofseward.net
Web Site: www.cityofseward.net
City of Seward Electric Department
501 Railway Avenue
Seward,AK 99664
Forms will be posted on the City of Seward Website or available at the Electric Department.The
signed form with supporting documentation should be turned into the City of Seward Electric
Department:
Shannon Huston
Phone: 907-224-4073 Fax:907-224-4087
Email: shuston@cityofseward.net
Web Site: www.cityofseward.net
City of Seward Electric Department
501 Railway Avenue
Seward,AK 99664
Acknowledge with:
Community Development: Initials Date
Comments
Building Department: Initials Date
Comments
Finance Department: Initials Date
Comments
Public Works Department: Initials Date
Comments
Electric Department Approval:
Approved: Disapproved:
Signature Date
Supplement No. ED-01
6/13/2012 pp 3 66
9 i I'
, , t i
d
I CITY OF SEWARD
1E .
INTERCONNECTION AND POWER PURCHASE AGREEMENT
i '
FOR '1
INDEPENDENT POWER PROVIDER i f'Iil '
' I 'I I Ie
1 This Interconnection and Power Purchase Agreement for Independent Power Provider
I'
(IPP)("Agreement"), dated �i
I , , made by and between City of Seward � f'
F (COS) and , Independent Power Provider
Account Number, is being entered into in order to set forth the ,
terms and conditions under which the COS Electric Department will purchase power j i� i�
from an IPP and the technical guidelines (attached)with which the IPP must comply in ' '
order to be interconnected to the COS electric distribution system. The COS and IPP may I i'
be hereinafter referred to individually as "Party,"or jointly as "Parties." ,�
Section 1. Definitions.
li
(a). "Alternative Power Source (APS)"means generation fueled by renewable resources
such as wind, solar, geothermal, biomass, or water. •�
I (b). "Application"means the Application for Interconnection of Alternate Power Source '
that must be completed by any Customer wishing to interconnect to the City of Seward '1
', Electric Distribution System as an Independent Power Producer(IPP).
(c). "City of Seward Electric Tariff'or"Tariff'means COS Rules, Regulation and Rates
on file with the City Clerk, as may be amended from time to time.
(c). "Contributor"means an individual or entity willing to fund alternative power I.
generation through voluntary monetary donation(s).
(d). "Delivery Point"means the location where COS electric distribution system
f
1 Y
terminates its equipment or conductors and at which the Customer assumes responsibility f
, for construction and maintenance of the electrical facilities.
�: I f
(e). "Independent Power Provider(IPP)"means a COS distribution system Customer who
i 1 has developed or is developing an APS Project.
(f). "Technical Requirements for Interconnection"means the document used by City of
Seward(COS)which contains the applicable engineering criteria prescribing the
technical interconnection,protection, and metering requirements for any APS Project to
I, 1 , be connected to the COS electric distribution system. This document may be amended f
from time to time. A copyof the Technical Requirements r
q ments for Interconnection is attached
I j as Appendix I hereto.
it ;.
1 Section 2. IPP Responsibilities.
The IPP shall be responsible for acquiring the site for the project, installing the
generation facility and complying with all of the requirements set forth in the COS Code 1
Chapter 14 Electricity and the Technical Requirements for Interconnection, including any ' r
iamendments that may occur for the installation and operation of the facility. Installation
i shall not be deemed completed until such time as the COS verifies all requirements i 1
�i
M 1
ji1
1
specified by the COS have been fully satisfied and all testing deemed appropriate by the ,
COS has been completed to the COS satisfaction.
It is the responsibility f
nsibilit of the IPP
all that may be required to have its APS Project certified by the COS as meeting the
n do
fII
� i requirements of the APS Program. I
Section 3. Safety Related Testing Requirements.
The IPP shall complete all required interconnection safetyrelated
testing of the APS 1 i I
Project prior to interconnecting to the COS distribution system. The IPP shall, at a
11 1
I ' minimum, annually test the interconnection safety features of the APS Project. The COS
reserves the right, in its sole discretion, to require additional testing to ensure that the safe ; 'I
i
and efficient operation of the COS distribution system is not jeopardized by
1 1 interconnection with the APS Project, including, but not limited to, additional tests to ,
' determine compliance with IEEE Standards and/or tests to ensure proper operation of the 1 ' I
APS Project. }
Section 4. Interconnection with COS Electric Distribution System Facilities. I 1 ,
I
Ii 1 j
Il I
Provided that adequate capacity exists on the COS distribution system where the APS
Project is located, interconnection of an APS Project to COS distribution system shall be i
1 1 on a first come, first serve basis, as determined by the effective date of the IPP '
Agreement with the COS.
1
Unless otherwise agreed in writing, all costs associated with the interconnection of the II 10'
APS Project to the COS distribution system shall be paid by the IPP prior to I
I interconnection with the COS distribution system. All Line Extension fees must be paid 1 i {"
in accordance with the IPP Rate Schedule of the Tariff.
i- � Upon completion of installation of the APS Project and receipt of the IPP certification ' ���u
I that all necessary Federal, State and local permits have been obtained, COS shall, within F1
I a reasonable time, interconnect the APS Project to the COS distribution system. Such
interconnection shall be done at a time convenient to the COS, and which is designed to
t 1 cause no, or minimal,disruption of electric service to other Customers. The IPP shall
provide continuing certification annually thereafter. Certification shall be provided upon
the form attached as Appendix II.
ilNonpayment of required costs or fees shall be deemed material breach of this Agreement I 'I
and COS may immediately disconnect the APS Project without compliance with Section 1 1
I 17 of this Agreement and the IPP shall be responsible for all disconnection costs. ,
Section 5. Point of Delivery.
X11 i r:
Power generated by the IPP shall be metered by the COS. Although the IPP is responsible j ,
1.
for the cost of the meter, the COS shall install and own the meters. i
,
Section 6. Access to IPP Generation Facilities.
I V
je
r '
y ' . 2 f2
II
4' !I
The COS shall be granted any necessary easements and have the right of ingress and j
egress from the APS Project and associated facilities at all hours for any purpose
I reasonably connected with this Agreement or the protection of the COS distribution ;''
p system. ; ;,
�I
Section 7. Ownership of Improvements. i'1 it'
The COS shall own any and all improvements or equipment up to the Delivery Point
9 including all meters necessary to record the generation of consumption of electricity. The ;;
IPP shall be responsible for all costs associated with any improvements and/or equipment
required pursuant to this Agreement. In consideration of the mutual benefits and other ,.'I'''
I, consideration stated in this Agreement,the IPP specifically agrees that the IPP shall not 111 i.
be entitled to any compensation or payment for said equipment and/or improvements.
11
Section 8. Operation and Maintenance of APS Pro'ect
I,
II
The IPP shall be solely responsible for all costs and expenses of every type or nature,
I relatingto the permitting,
'' purchase, operation, and maintenance of the APS Project. The
IPP shall, at all times during the term of this Agreement, keep the APS Project in good I' I
repair and operating condition so as not to cause damage to COS facilities or distribution
system. The IPP shall not rely upon the COS, or any representation or statements made ,;'
r by COS employees and/or representatives regarding steps or actions necessary for the 1' I
safe or good operation of the APS Project. If, at some future date, additional or modified I
1 equipment or facilities are necessary to continue safe operation and/or interconnection of t
the IPP's facilities, the same shall installed at the IPP's sole expense. Failure to do so will iI
qbe considered to be a material breach of this Agreement and will result in the immediate , I
I disconnection of the APS Project without the COS complying with Section 17 of this ',
i Agreement.
Section
9.
t � Damage or Interference with11 t
g COS Electric Facilities. 1 i. 'I
If the APS Project or IPP's actions cause damage to the COS distribution system and/or
COS facilities and equipment,the IPP shall be responsible for all costs associated with '
repairing the damage and/or replacing such facilities or equipment. If the APS Project ; 1;,
and/or facilities cause loss or damage to COS other Customers, the IPP shall be liable for ' ''ir
q all such damage, claims and losses.
f E,'
ji If the APS Project or IPP's action's cause damage to or interfere with the COS or any of '
its Customers' facilities, the COS will disconnect the APS Project from the COS
1 distribution system until the cause of the damage or interference is remedied to COS's
satisfaction and costs associated with the damage or interference � ' I'I'
n g caused byAPS
Project
II
or IPP's actions are paid in full by the IPP.
1
�i I
Section 10. Purchase and Sale of Energy Delivered.
j , ,
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l
i
iI Ii T t
During the term of this Agreement,the IPP shall receive credit, in accordance with the 'I
, ,
Tariff, toward their next bill when the IPP
producesmore power than the COS supplied. `
1
l, ,
i 1
Section 11. Interruption of IPP's Energy Deliveries. '
The IPP shall have the unilateral right at any time, without liability to the IPP or any !I.
other person,to interrupt, reduce, suspend or curtail generation and/or deliveries of if
1 1 energy from the APS Project; (a)when reasonably necessary, in order for the COS to
T. tliconstruct, install,maintain, repair,replace,remove, investigate, orinspect any equipment
,r
or any part of its distribution system; or(b) if the COS reasonably determines, in its sole
it
1 g discretion,that interruption or reduction of deliveries of power is necessary because of a 1
system emergency, a forced outage, or Force Majeure or other operational considerations. "�o
Section 12. No Reliance. 17
The IPP acknowledges and understands that the energy market is not static, but is
dynamic and volatile. The IPP has not relied upon any price or supply forecasts made by t E
Ij I the COS, its employees or representatives, including purchase price (credit) in the IPP 'k`,
Rate Schedule of the Tariff, in deciding to go forward with the APS ProJ'ect. '
,
Section 13. Billing and Payments.
I4
(a). The COS shall be responsible for reading the meters at least monthly to 'd}�'
determine the amount of energy actually reduced or delivered by the APS
Project to the COS distribution system.
(b). If the COS supplied more power than the IPP produced during the monthly
billingperiod,
the customer will be billed for net electric consumption at the
normal rate established in the IPP Rate Schedule of the Tariff.
(c). The COS Finance Department shall provide a billing statement to the IPP i ,
within normal operations showing the total amount of kilowatt-hours '
(kWhs) generated by the APS Project, as well, as the total amount of
kilowatt-hours (kWhs)delivered from the APS Project to COS distribution #
system during that billing period.
(d). If the APS Project produced more power than the utility supplied to them 1
1,,
during the billing period, the IPP will receive a dollar credit towards their ',i �
next bill. For Large, Class D Providers, COS shall with the concurrence of i I'�
Chugach,purchase from IPP the electrical energy produced by the APS i
Project and delivered to the COS distribution
system. All rates will
Y be m 1 ;
accordance with COS IPP Rate Schedule of the Tariff.
(e). The IPP shall review each monthly billing statement promptly and provide
notice to COS Finance Department of any inaccuracies or disputes regarding
i the billing statement within thirty(30)days of the date of the billing ;1
statement. i
(f0. The COS Finance Department will have no liability to the IPP for any ' �!;;
inaccuracies or errors on billing statements for which the IPP has failed to
provide timely notice.
, i a �.
6)a
14 'I' , i,
f
II (g). The COS Finance Department liability for inaccuracies or errors in the
billing statement or metering shall be limited to an amount equaling one(1) 1
1 , .
iI month production based on the average of the last three months production
measured by the COS Electric Department APS Generation meter. j F
(h). Administration of the APS Program and all billing and payments under ;!;
this Agreement shall be in accordance with the IPP Rate Schedule of the
Tariff.
11 1
Section 14. Payments by the IPP or COS.
' ij
l
l
(a). The IPP shall pay the COS Finance Department in accordance with the 11;
Tariff.
Amountsa
not paid when due maybe offset ' � :�-�
against sums
duetothe ,,.E
'i i
IPP from the COS Finance Department. .
i
(b). The COS, at the request of the IPP, will once a calendar year provide the j
IPP a cash payment, if APS Project has provided more power to COS than
the COS has provided. i it 1
(c). The IPP failure to pay any such amounts owed by the due date, the COS !1'
may immediately disconnect the APS Project with the IPP being responsible
for all disconnection and reconnection costs. G 1,
Section 15. Force Majeure. I'
li
Neither party shall be responsible or liable for or deemed in breach thereof because of II 1
any delay or failure in the performance of their respective obligations hereunder(other II
than failure to pay money when due),to the extent such delay or failure is due solely to
circumstances beyond reasonable control of the Party experiencing such delay or failure, it
11,
such circumstances including, but not limited to, acts of God, unusually severe weather
conditions; strikes or other labor difficulties; war; riots; requirements, actions or failures l''II is
to act on the part of governmental authorities preventing performance; accidents; fires; ; i(
failure or damage to, loss of right to or destruction or breakdown of necessary
I;i°
transmission facilities, which, by exercise of due diligence, such Party could not I'
reasonably have expected to avoid and which by exercise of due diligence it has not been }' a
able to overcome(such causes, a"Force Majeure").
(a). If either Party, because of Force Majeure, is unable to perform its 1,1,
obligations under this Agreement, that Party shall be excused from whatever
performance is affected by the Force Majeure, except for payment of money '' ,i'
due, to the extent so affected,provided that: rl
(1). The non-performing Party, within two (2) weeks after the ,
commencement of the Force Majeure, gives the other Party written " "Ii
notice describing the particulars of the occurrence. , ,;.
(2). The suspension of performance is of no greater scope and of no
longer duration than is required by the Force Majeure.
1i
,
,
1;
(3). The non-performing Party
p g uses reasonable efforts to remedy the , �i,
inability to perform, such efforts not to include settlement of a labor 'r
dispute. I,h
Id ,
(b). When the non-performing Party is able to resume performance of its 11"
obligations under this Agreement, the Party shall give the other party
written notice to that effect. !i
lig;
11
(c). In the event a Party is unable to perform its obligations under this
Agreement due to legislative,judicial or regulatory agency actions, that
Party shall not be deemed to be in breach of any obligation pursuant to this
Agreement.
i. (d). The COS shall not be provided the IPP with the notice that IPP is required 1 '
to provide in accordance with paragraph 15(a)(1) and 15(b) in this Section. I'
ff
Section 16. Term. I
This Agreement shall be effective on the date set forth above. This Agreement shall
continue in full force and effect until terminated by either Party. Either Party may I ,
terminate this Agreement upon providing the other Party with written notice thirty(30) , ,
days prior to the effective date of such termination.
I
Section 17. Default. ,
' 1
Except, as specifically provided for in this Agreement, in the event of a breach of this i I'
Agreement by either Party, the non-breachingPartymay '
�'h' deliver a notice �
of default to the ,
breaching Party. The notice of default shall specify the nature of the breach that is the 1 � ;I
basis for the notice and give the breaching Party at least ten(10) days to cure said default,
stating that failure to cure said breach will entitle the non-breaching Party to terminate ,,l'
this Agreement. Bankruptcy, insolvency, reorganization or liquidation by either Party 1,,'
shall constitute a breach of this Agreement. , I'. i
1,
il
Section 18. Compliance with Laws and Regulations i i
! ,
The IPP shall comply with all environmental laws and regulations, and shall maintain and
operate the APS Project in strict accordance with all applicable laws,regulations and
safety codes. The IPP is solely responsible for compliance with all environmental, land
use and other regulatory requirements. If the COS, or regulatory agency, at any time I
determines the APS Project is being operated in an illegal, unsafe or unreliable manner, 1 I
the COS shall have the unilateral right to interrupt and discontinue its receipt of energy 1
from the APS Project without any liability or continuing obligation. Further, if any
regulatory entity or entity charged with ensuring reliability of electric systems (or
charged with permitting the APS Project)requests or directs disconnection of the APS I a
Project, the COS may disconnect the APS Project without liability to the IPP. The IPP ,I
I
shall supply certification of compliance with permit requirements to COS prior to I 1
/ qiz , 4
I '144,1
1
mowM." ww......a.n.,.,..., ,.......-...._.,.,,..............
interconnection and annually thereafter. Certification shall be provided upon the form !
attached as Appendix III. ;
Section 19. No Sales to Third Parties.
This Agreement does not confer any right upon the IPP to transmit, distribute or delivery
energy to any third party.
Section 20. Taxes. +
j.
Any and all taxes due and owing as a result of the ownership and operation of the APS11
i, Project or IPP's associated facilities shall be the sole responsibility of the IPP. 1,
iI
Section 21. Insurance. li
The IPP will not be required to carry liability insurance with the COS as a named insurer
as long as the APS Project meets the requirements provided in City Code and Technical
Requirements for Interconnection. 1
Section 22. Indemnity. f
(a). The IPP shall defend, indemnify and hold harmless the COS and its
representatives (which shall be deemed past and present COS employees,past E
andre
p sent City Council persons or agents employed or contracted with the 1
COS) from and against any and all liability,claims, lawsuits, losses, damages,;i
I I
expenses, fines,penalties, citations or infractions of any type or nature, 1 i
including actual attorney fees and expert witness fees, which may be incurred
or sustained by the COS or its employees or agents by any reason of any act,
omission,misconduct, negligence, or default on the part of the IPP or its I
employees, agents,representatives, and or contractors arising in the
connection with or related to the IPP's ownership, installation, maintenance or !°
operation of the APS Project. ;,I
a
(b). The IPP shall defend, indemnify and hold harmless the COS and its
representatives (which shall be deemed past and present COS employees,past 1
j and present City Council persons or agents employed or contracted with the I
COS) from and against any and all liability,claims, lawsuits, losses, damages,
expenses, fines,penalties, citations or infractions of any type or nature,
,, including actual attorney fees and expert witness fees,which may be incurred
or sustained due to the IPP's alleged violation of any permitting, land use, or
environmental laws and regulations. In the event a claim is made which is II
subject to this subparagraph, the COS reserves the right to select legal counsel ' ,
and control the defense and settlement of any such claim. Such defense shall
be at the sole expense of the IPP.
11
11
0 71 /2 11
iI __ • a is
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(c). The IPP's indemnification obligation shall not apply to liability for
damages for bodily injury to persons or damage to property caused by the sole I,'
negligence of the COS and not in any way attributable to any act or omission
on part of the IPP. "'
Section 23. Limitation on COS Liability. 1
The COS shall not be liable to the IPP for consequential, incidental,punitive or indirect
damage of any kind due to any damage to disconnection of the IPP's facilities. The COS , f''
shall have no responsibility or liability to the IPP or any other person or entity for or in
connection with any service interruption, suspension, curtailment or fluctuation or '
disturbance of energy, whatever the cause, except the COS shall be liable for repair or11
replacement cost(whichever is less) of the IPP's facilities suffering physical damage as a
direct consequence of the COS's sole negligence in operating its distribution system.
Sectiom 24. Removal of Interconnection Facilities.
i1
If required by the COS upon expiration or termination of this Agreement;the IPP shall
pay the reasonable costs of removal,relocation, modification or renovation of any
facilities or equipment required for interconnection with the COS distribution system. j ,
Section 25. COS Tariff.
,
a
This Agreement is subject to the terms and conditions contained in the COS Electric i'
Tariff. In cases of conflict between this Agreement and the COS Tariff,the terms of the
Tariff will control. I{
Section 26. Attorney's Fees.
This Agreement shall be interpreted under the laws of the State of Alaska. In the event it
is necessaryfor either PartyI " 1''
to utilize the service of an attorney to enforce any of the
terms of this Agreement, if such enforcing Party prevails, it shall be entitled to
compensation for its reasonable attorney's fees and costs. In the event of litigation j ;.
regarding any of the terms of this Agreement,the substantially prevailing Party shall be ;,q
entitled, in addition to other relief, to such actual attorney's fees and costs as
demonstrated by the prevailing Party to the court.
II
27. Amendment, Modification or Waiver. ;;{
PI
Any amendments or modifications to this Agreement shall be in writing and subject to I
mutual agreement by the Parties. The failure of any party at any time or times to require
performance of any provision hereof shall in no manner affect the right at a later time to '
enforce the same. No waiver by any Party of the breach of any term or covenant i
contained in this Agreement, whether by conduct or otherwise, shall be deemed to be " f'
construed as further or continuing waiver of any such breach of any term or covenant
unless such waiver is in writing. I�'!
Ii i.
gL-23 8 op? I
44#0l ,w 1
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Section 28.Notices. ,
All notices and other communications required or permitted hereunder shall be deemed 4!1,1
,4,1
given when received and, unless otherwise provided herein, shall be in writing, shall be i;Z,i
sent by nationally recognized overnight courier services or sent byregular mail deposited 'A '
in the United States mail,portage prepaid, addressed to the Parties at the address set for V!
below or such other address as ashall specify in writing, and shall be deemed 1 "`
partyli
p fY g,
received upon the sooner of(1)the date actually received or(2)the third business day ' , .
i ;
following mailing:
To: City of Seward ''
!I.
City of Seward 1,,,t.,
City Clerk Office
P.O Box 167
Seward,AK 99664-0167 I
Telephone: (907) 224-4045A11
Fax: (907)224-4038 4,�, '`,'
To: IPP 11 I,b,;i,
,14
' I
Attn:
Telephone: C:
Fax: r' �ti
i;l,a
Email:
13
Section 29. Several Obligations;No Partnership or Agency Status 41,4
ill
Except where specifically stated in this Agreement to be otherwise,the duties, i`'
obligations, and liabilities of the Parties are intended to be several and not joint or I1 y;'
collective. Neither Party shall have the right to bind or obligate the other in any way or t
manner unless otherwise specifically provided for herein. Nothing contained in this
Agreement shall be construed to create an association,trust, partnership, franchise, or f
joint venture or impose a trust or partnership duty. Except as specifically set forth in this 1 ,
Agreement, each party shall be liable individually and severally for its own obligations , ,
and actions under this Agreement.
Section 30. Miscellaneous.
"
Y'
(a). Successors and Assigns. All terms and provisions of this Agreement shall5,
be binding upon, inure to the benefit of, and be enforceable by the successors '"I'`,
i;.
and permitted assigns of the Parties hereto.
14 1
fl) 66 12.
i .
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;I(a
(b). Interpretation. The Parties agree that the terms and provisions of this f I�
Agreement embody their mutual intent and that such terms and conditions are li
not to be construed more liberally in favor of,nor more strictly against, either l; '
Party. To the extent the mutual covenants of the Parties under this Agreement
create obligations that extend beyond the termination or expiration of this " Hi
Agreement,the applicable provisions of this Agreement shall be deemed to I"
survive such termination or expiration for the limited purpose of enforcing
such covenants and obligations in accordance with the terms of this '
Agreement. �E1i'
(c). Counterparts. This Agreement may be executed in counterparts, each of cI
which shall be deemed an original and all of which, when taken together, shall
constitute one and the same instrument. `'�!'
11
(d). Authority. Each person executing this Agreement on behalf of a Party 1
represents that he or she has the authority to execute it on behalf of the i"!,
respective Party. If the IPP is incorporated, it shall provide the COS with a
duly certified copy of a corporate resolution,naming and authorizing its (
representative(s)to enter into execute this Agreement.
(e)Appendices. The Appendices referenced herein and attached hereto shall i
Ii ,l
be hereby incorporated and made an integral part of this Agreement. 1,
it
(f)Entire Agreement. This Agreement and the attached Appendices constitute
the entire understanding and agreement between the Parties regarding the
subject matter hereof, supersede entirely all prior understandings, and may not I I
be altered or amended, except by an instrument in writing signed by the 1 I"
Parties. The Parties each acknowledge and agree that no representation, , 1
warranty signed by the inducement has been made to it regarding the rights set �I
forth in this Agreement which is not expressly set forth in this Agreement and I i I
attached Appendices. I 1
II
(g). Third Party Beneficiaries. This Agreement is intended to be solely for the
benefit of the Parties hereto and their permitted successors and permitted i.;i
assignees and is intended to, and shall not confer any rights or benefits on any I,
other third party not a signatory thereto. �,
1,"I
(h).No Agency. Neither Party shall be considered to be the agent or ;
representative of the other Party. No agency relationship is created by this ,f;i;:
Agreement.
(i). Communication. The IPP must provide and maintain current contact
information
information with the COS. Due to the importance of maintaining operational a
integrity of the COS distribution system in a safe and efficient manner,the �,;
COS will have the unilateral right to react to any circumstances created by the , I
APS Project being interconnected with the COS distribution system and its ,411
, 1
I
s I f
_ \
Customers. The COS may separate the APS Project from the COS ±SI! ƒmQn \\}
system whnimmeiatecomalwit the IPP is not possible or practical under : /
the circumance.IN \ }
WITNESS WHEREOF, the Parties have caused this Agreement to be
executed by their duly authorized represemailvsontedt first above /\
written. \\\
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CITY OF SEWARD (NAME OF IPP) \\
By: By /
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Printed Name:
Printed Name:
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Title: T!#e
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CITY OF SEWARD �� ;
INTERCONNECTION AND POWER PURCHASE AGREEMENT i. 1
FOR Ii s
INDEPENDENT POWER PROVIDER lG;II
•
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•
INDEPENDENT POWER PROVIDER'S PERMIT CERTIFICATION '
The undersigned states under penalty of perjury that: 'I Il'i!
1. He/She has the authority to sign on behalf of the Independent Power Provider 1
�
(IPP),
(Name/Customer Account ll'
�
No. ). i,p
2. The IPP has obtained all necessary permits for the installation and operation its lb,
generating facility located at (only one site may be i
listed per certification). 11r;,
Ir
3. The IPP has complied with, and will continue to comply with, all laws related to j�1
the siting, installation and operation of the generating facility described above. i �1''
Dated this day of , 20 . 'Is IIc
'Ij�
11,r.
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Signature: I''
11
Name: 1 s;�
1j+�
Title: 1 ' ',
Isk
is�.s,.
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4,4 1
1 i ' 1 1
R.C.A. Tariff No.8
ELECTRICITY Sheet 97, 102"d Revision
Chugach Electric Association,Inc. Canceling Sheet 97, 1015t Revision
ELECTRONIC REPLICATION OF SHEET ON FILE WITH RCA
-Font and Format May Vary—Content is Identical
PURCHASE AND SALES RATES FOR QUALIFIED
COGENERATION AND SMALL POWER PRODUCTION FACILITIES
Available in all territory served by Chugach. Applicable to qualified cogeneration and small power
production facilities of 100 kW or less. The type of service shall be single or three phase 60 hertz at
Chugach's standard voltages.
Chugach reserves the right to limit the number of customers receiving service under the terms of this
schedule to one per substation circuit. Chugach further reserves the right to reduce the buyback
rates for costs associated with the integration of the energy produced by the qualifying facility into
the Chugach system. Integration costs are project specific and determined through the completion of
an integration study completed by Chugach.
Monthly Rates
Power sales supplied by Chugach to the customer in order to meet its electric requirements will be
priced at the applicable retail rates.
The rate to be paid by Chugach to the customer for kWh supplied by the customer to Chugach is
the avoided cost calculated as follows:
1.Retail fuel and non-Bradley Lake purchased power expense,
less recovery of fuel and purchased power costs from steam sales,
all predicted for next quarter in the determination of the surcharge
rate. $ 17,275,920
2. Retail kWh Sales at G&T predicted for next quarter: 262,610,205
3. Retail Avoided Costs per kWh at G&T(L1 /L2) $0.06579
4. Avoided Costs at Primary Voltage
a) Primary kWh Sales at G&T 10,326,391
(Percent Primary Distribution Losses at G&T: 3.43%)
b) Primary kWh Sales at Delivery 9,972,355
c) Avoided Costs per kWh at Primary(L3 x L4a/L4b) $0.06812
5. Avoided Cost at Secondary Voltage
a) Secondary kWh Sales at G&T(L2-L4a) 252,283,814
(Percent Secondary Distribution Losses at G&T: 4.15%)
b) Secondary kWh Sales at Delivery 241,819,742
c) Avoided Costs per kWh at Secondary(L3 x L5a/L5b) $0.06863
These rates will change concurrently with fuel adjustment factor revisions and general rate revisions.
TA Number: 352-8 Issued by: Effective: July 1,2012
/ Chugach Electric Association,Inc.
P. O.Box 196300
(J _ Anchorage,AK 99519-6300
CITY OF SEWARD
INDEPENDENT POWER PROVIDER'S INTERCONNECTION
PERMIT CERTIFICATION
The undersigned states under penalty of perjury that:
1. He/She has the authority to sign on behalf of the Independent Power
Provider (IPP),
(Name/Customer Account No. ).
2. The IPP has obtained all necessary permits for the installation and operation
its generating facility located at (only one site
may be listed per certification).
3. The IPP has complied with, and will continue to comply with, all laws
related to the siting, installation and operation of the generating facility
described above.
Dated this day of , 20 .
Signature:
Name:
Title: