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1 (l3// A 4 -- I c.2- 10 — YEAR TRANSMISSION SYSTEM ASSESSMENT / , 4 f V w i -ri • :. ... ...,,...,,..... .,„..q‹ ,,.. ,.fes rf •,:.r '� f ':' 2016 , . . .,. „.,. . .. . ... •.` ,tom i _.,k , , . „ ,.,...._,:c..........„,..„..... ,..„,., .. , , t ., , .., ... . . . : ,:. SUMMARY . � 1 `',;, e , lor r� , ,; .1 , REPORT r .i-,,c::.'..- Ay r:� Y• ^4:.yr Li• ..� 'n i.. ; E 4 } i r� { '"”,r i' • 4' �. 'r 1• �: �. ; ;rATt +f y./w..,,,,, , n', •• ! ' i L y y .,I- �'4- ~ •... - 3 � • i a fA u_� r N ,,#� 7.. L tF - 1f :-F1''.7...- F.. '�, `�•-N`ti. f Uc .2,.....k- .r, :`",� DF �.i r� J'q++-• `�l .:Ft�., r ' • g. .,::y 4f ', ! .,��*-;',•.,"4/.;''.:,•,'-'4.-4.11` " ,..pq�„• ,k+ a </G+ f. - ; a -r 7. 4.'�s`k '?'}, .,,,!.:—%• "”( atl�+��ti n r z b.... { a. • , x\ 'r X / Liv iR 4. !fir ` , yam• ! '''''.111,.. A +4,,,- ) 4 ;qq-i J'r :,. • .4 • • 4. i $ .yy}� .L.r rWI.. y��,ill ,!: •i`R', '} i}.1, ;4 l Rn. 't' f`+-: - i r - • _ 1 - n Y. y • ,�l' . .ts.:''' �:t. .7'; • ti r ,s_.. ? ` s' z� ti ' •i .ly t itg, ...;.".•: ,N" N. ) 4 , �a„,'� �R.F y Y•. a r �ry,~ � •,,shy� �,,,;' f< y ,wc�!!i'ty "phi rt{ .s.l J"' ti tl 5 "�;i - .0 ?• +,��5 W \, E • -].=fi 17 r" '+r ra• 5'!c r. ..e .,•.. "� • 'r' - .„7, .4 kr,..1„,.'•‘,.., R �"S -4, �1• • • x ,,ate 1 _ .. ! • . ■ k lrillilliiiiii# AMERICAN TRANSMISSION COMPANY 2 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT Powering forward — safely and reliably - For the past 15 years,American and build, it is crucial to plan for new ITransmission Co. has provided electric transmission lines well in advance to Stransmission service to Wisconsin, be able to serve our customers well. IIUpper Michigan and portions of Illinois `., and Minnesota.As the first multi-state, We anticipate that the next 10 years will 4 \ transmission-only utility in the United continue to present new challenges, t i States,ATC remains committed to the including changes in generation sources :� i',� safe and reliable transmission of due to the Clean Power Plan. In addition, - ri •�+ electricity throughout the region. as the need to build out the transmission �y, 1 ' 4 ' : system in our region slows down,the b•�� . We do so through a network of more than need to efficiently maintain and upgrade , _J yr 9,540 miles of high-voltage transmission older assets will ramp up. Our investment - '' — lines and 548 substations, providing forecast for the next 10 years is a - • •• A •r communities with access to a variety of reflection of that. .. +..., 1 local and regional energy sources. ' � �� This 2016 10-Year Assessmen#contains Planning a safe and reliable transmission a summary of ATC's planning initiatives AN- ',. I network involves ongoing evaluation of and an overview of network-driven and --.:14-- the system and taking a comprehensive asset-renewal projects in each of our / look at the various factors that have planning zones. It covers 2016 to 2025 J�, ,._. - , an impact on electric use in the region. and calls for$3.6 billion to$4.4 billion igi Some of those factors include businessin system improvements. 1 I� r` development and employment trends, 1 k.. .. generationprojected For more detailed information, please visit 411.,....0"1 proposed new and -' growth in electric usage. Because www•atcl0yearplan.com. transmission projects take years to design fl/P4.44124 C . Z.-4 ({60t,,L)4•7 idt..-,d'a-t-,--,....„..-- Ron Snead John McNamara Vice President, System Planning Vice President, Asset Management 2016 SUMMARY REPORT 3 Our 10-year plan recognizes a slowing, but continuing, need to expand the regional grid as well as the need to efficiently maintain and upgrade older assets. Y ATC Offices • Transmission investments Projections from past and current Transmission System Assessments 2012 2013 2014 2015 2016 Specific Network Projects $1.9B $1.2B $1.4B $1.4B $1.3B r Regional Multi-Vale Projects $0.88 $0.5B $0.5B $0.5B $0.5B Asset Maintenance $1.18 $1.1B $1.2B $1.4B $1.4B /', Other Capital Categories $0.1 B/$1.0B $0.2B/$0.8B $0.2B/$0.8B $0.4B/$1.2B $0.4B/$1.2B Total 10-Year Capital Cost $3.9B/$4.8B $3.0B/$3.6B $3.36/$3.9B $3.7B/$4.5B $3.66/$4.4B 1 `-.... I. f �� 4 i,�1 -���{{ > �� -.- ,� y'e.yK�y ✓a. utr n'4 c Y iT a h y iy n ;dA ' h r 4 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT Regional and economic planning update ATC is an active participant in a variety MTEP 16 of efforts to address regional and ATC staff participates in the MISO inter-regional planning initiatives designed short-term reliability and economic studies to maintain a reliable grid and capture in a variety of ways: ensuring accurate economic benefits in a dynamic energy project information is included in the marketplace. Policy initiatives to curb MISO database, building and reviewing greenhouse gas emissions and expand models,correlating needs identified by the use of renewable energy continue MISO analyses with specific ATC projects to evolve,and we work closely with and participating in various studies and our customers to plan for an electric stakeholder forums. transmission system that will serve their needs well into the future. Market constraints Two of the five narrowly constrained Midcontinent Independent areas identified in the MISO region are System Operator Transmission associated with ATC, and we continue to Expansion Planning track these as well as other constraints. MISO planning studies address long- Such tracking assists in planning projects and short-term issues as well as targeted that alleviate congestion within the needs. Long-term studies primarily look MISO market. y at value-based options that provide economic benefits in the 10-to 20-year Other MISO planning activities i horizon. Short-term planning is primarily Our planning staff participates in various driven by transmission owners' reliability technical and policy discussions and and North American Electric Reliability provides future direction for MTEP ___- m•- Corporation compliance needs in a activities.We also are involved in joint five-to 10-year period. planning studies with neighboring regional transmission organizations, , t „v ' ii :� ' s including PJM and SPP. � i 11111111111F* MISO and PJM coordinate,conduct and A analyze several market efficiency project ,' : F. studies.This analir ysis is reviewed by 1I an inter regional planning stakeholder l 1 t advisory committee,which typically j \ 3 examines economic projects that could i benefit both RTOs and qualify for i '' a ; .l cross-border cost-sharing. is i-j# I 4 /me - , -,,to ivy : , . - , ,,,‘ „,,,t,,A,_: ‘, ,,,,,, ,,,, ,, „,,,,....„ti.:. ,. _ :, ;(), it , ,, ',,,' '1 - 1 stly ; — i- ,i• i!,' - ..,: -1' I j MM ,��,�,, f- ce' --,�--- ,i .,,iY. ..-. ANA, • iJ _ a-_ n _ -- ys�t�1 ,. *.,. 2016 SUMMARY REPORT 5 and inter-regionaRegionall planning for reliability is needed N in a dynamic marketplace, as '' well as for capturing economic benefits. ', I! ty rL J .o F'. t r 4�� � w., iol i. l���. .. Apfr 1 •.. '-: - , ' Arr.- .' '.4::,1---411?"-- . ,......,----, _ ;_,' _ , i it o . > AO* .f . rs Ar r s ' 'om+F lf 4` y x.' its' -,5 ii � . 6 AMERICAN TRAM,SMA$S11334C�:'r13EAR TRANSMISSION SYSTEM ASSESSMENT > a- ..••••••• ���� ,: - ,-. (._....,__—,, . •...- •r- _ - .ces 1 r„- a fa A -. , It.. --- yam e'^ ,rte 4 4�'7t ..a�lil*~ ea� _ • Ale # F ir... -f*,' _ -`:''','''4 h:,,.,,a,--**-,A, ... . Major projects update Badger Coulee Bay Lake Construction is underway on the Badger Coulee The Bay Lake Project is a package of proposals intended to transmission line,one of MISO's 17 Multi-Value Projects. address the delicate,shifting balance between generation, The project was approved by the Public Service load and transmission in the northern portion of our Commission of Wisconsin in spring 2015 and is expected service area. to be in service in 2018.The 180-mile,345-kV line between the La Crosse and Dane County areas will deliver Construction of the$120 million Holmes-Old Mead Road reliability, economic and public policy benefits. Sponsored portion of Bay Lake began in early 2015. It includes jointly with Xcel Energy,the line will: a single 58-mile, 138-kV line from the Holmes Substation in Menominee County to the Old Mead Road Substation • offset the need for about$190 million in lower-voltage in Escanaba,Mich.,and was placed in service on time upgrades in western Wisconsin, and under budget in August 2016. • increase access to the wholesale energy market and The North Appleton-Morgan portion includes 345-kV provide between$118 million and$700 million in net and 138-kV lines from our North Appleton Substation in economic benefits over the life of the line,and Outagamie County to the Morgan Substation in Oconto • establish another pathway for renewable energy into County,Wis.; both substations will be expanded. Wisconsin with a connection to key load centers. A new substation, Benson Lake in Marinette County, will be required to accommodate a large voltage-control device.Additional work will be required at 11 other substations.The project was approved by the Public Service Commission of Wisconsin in May 2015. Construction of the$328 million project began in 2016. It has an in-service date of late 2018. N I-. ce 0 0. ILI / lip CC •• .4 • .... PtkNIA . ' f '' 1': ,,,,...igi..„ •'''.,:--- •• . -4'. .,; ,,•••- • • •'- •- --- •- -, ..6,--•-• • • ..••---;,-''',- . . . • . , . . •''' -`,. _ ., ''yi-",,,,:•--...._ 00/111.111..- 1 ts, I i C.• ' ' •,,, / i /f f 1 i — iffil . ---....Y.•• / ... . ., ' f - . - . . .. . f, i 1 , 1 •0' ' •..4\ III i 4 . 4 ti,.. ... ; 'l- e • ' I's, I . s• .1 It,', ilk..., , I ,. • 1 • s' ;1 , ,, • \''' ri,; • , , I , • ' 'o ' I • ' 4 •• ,' • _ qt. . 111111111111111.11.., , '; 'N) i , . • ' — , . , . , 1 , . ; 1 s , . 1 . . r' 4 ' . I ',,,ti .; 41 , • _ . , 1 % L , , ' , .• 14 .1i ' r, 4, i tj. ) . • 1 . , ' .. 3111t, 4 , P. ..- . 1 h. r , • 14, f r 44; I . ,..... . _ 4 lli.1 A .. , , , . , . • . . , 4 ' . , • •,,.... 'i eser:,..... -:Ist:e.*: 't..,-:-- 1. ti 1 ,. • . 1 - . • . . i 11 i• 147 • , :.,, •., .• . , ,,-t - •,..17,-, • I I . . • 1, ,,:i.- , ,. . . . ..• . . r ' t r, ' . et. • • t c - ... f ' \''' , ts.' '$ • r ) .1 . p. ri 'r . , •,, IsI ,.I • It ; ‘...4-...sr f \ • `,,...'.!. . . -"liqIIIIIIIIIIII*". 44:0*....k... ii 8 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT -., Cardinal-Hickory Creek ATC had collaborated with MISO to include `--.. ATC, ITC Midwest LLC and Dairyland Power these projects in MTEP 15.ATC is supportive Cooperative have plans for a 125-mile, of efforts in Michigan to add generation 345-kV transmission line connecting in the area and will continue to assess / Dubuque County,Iowa,to Dane County,Wis. the need for these projects as generation �' i The Cardinal Hickory Creek Project is proposals progress. 1another of MISO's Multi-Value Projects. t -„7-----' Wisconsin-Illinois Studies indicate that Cardinal-Hickory Creek ReliabilityProject > will deliver benefits to local communities and the Midwest region by: ATC has proposed a reinforcement project • improving electric system reliability to address reliability concerns associated '0 locally and regionally, with the Wisconsin-Illinois Reliability • delivering economic benefits for Project.The project efficiently reconfigures utilities and electric consumers, and two existing 345 kV lines in Wisconsin and • expanding infrastructure to support Illinois, linking them with approximately public policy for greater use of three to five miles of double-circuit,345-kV renewables. lines and a new substation. If approved by Wisconsin and Iowa This proposed reliability project has been regulators, construction is anticipated approved in the MISO regional-planning to begin in 2019 with an estimated process with a projected in-service date of in-service date of 2023. 2020. It requires approvals from the Public Service Commission of Wisconsin and the • Northern Area Reliability Illinois Commerce Commission. Assessment ATC initiated an effort in 2014 to engage Spring Valley-North Lake Geneva stakeholders and identify potential The$71 million Spring Valley-North Lake reinforcements due to generation Geneva Project was approved by the Public uncertainties in the northern portion of Service Commission of Wisconsin in spring the ATC system.The 10-year project list 2016.This project is needed to meet an includes the following preliminary projects: increase in electric demand in Walworth • Plains-National 138-kV line, and Kenosha counties in Wisconsin. • Plains-Arnold 138-kV line uprate, The project involves: • Increased Plains 345/138-kV • construction of a new 138-kV transformer capacity, and transmission line of approximately • Morgan-Thunder-Crivitz 138-kV project. 23 miles,stretching from the North Lake Geneva Substation'in southern -- N. f t Walworth County to the Spring Valley 14$�,_ t Substation in western KenoshakV pro0. ` q_�1 • construction of a new 138-and 69-kV substation on an ATC-owned parcel along Highway 50 in the Town of .a S Wheatland, • construction of a new 69-kV A = iii transmission line to connect the new y substation to the existing Twin Lakes *r iiiiiiiillill.1111 Substation in Twin Lakes,and �. --- • other power line modifications. ,, - i Construction will begin in 2017 to meet wo _ t, a 2019 in-service date. _ 2016 S MARY REPORT 9 MINIMMII II= �rU �yTJj F s t.seg _, '1. - - .. `A' SAlb ��, as -� -. z , 1 ! r �1_ it F — - �"�Iii_ i�' 4- 10, _ a ice' lit 1» . �4 w—_ Our progress While our top priority has always been electric Our system-wide planning process has reliability,our mission today is somewhat different than when we began operations on day one in 2001. helped improve electric reliability, allowing At first,our efforts focused on connecting the major our customers to participate in and reap the components of a fragmented system that was created after the founding utilities pooled their assets to form benefits of the wholesale energy market. ATC.There was little incentive for those transmission owners to make investments in the system and it was Due in large part to our asset management efforts, geographically constrained by Lake Michigan and our reliability has remained best-in-class in several Lake Superior. Now,after$3.8 billion in investments, industry benchmarking studies. In 2015,we achieved we have a grid that enables our customers to top decile performance for components operating participate in and reap the benefits of the wholesale at 69 kV and between 100 and 161 kV,along with energy market. top quartile for the 345-to 500-kV voltages classes. As we continue to use our system-wide planning Our single-focus,transmission-only business model process to effectively and economically improve has produced significant results for our customers reliability, more emphasis is being placed on the over the years. need to efficiently maintain and upgrade our older assets. Our asset management program is focused Since we were formed in 2001,we have: on the life-cycle management of transmission assets. • Upgraded more than 2,130 miles of transmission The objective is to ensure assets perform the required line, function in a sustainable manner while managing • improved 181 electric substations, life-cycle cost. Coordination of design, commissioning, • Built 51 new transmission lines (679 miles) operation, maintenance and replacement strategy is • Connected 6,000 MW of new generation at 25 sites, crucial to developing the replacement strategy of the • Saved customers more than$100 million a asset life cycle. Asset renewal is driven by public and year in reduced energy costs with access to the worker safety, regulatory compliance, reliability and marketplace and lower line losses, operational performance. • Increased import and export capability,and • Improved transmission reliability. 10 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT What drives the need for • transmission system improvements ? 1 Early in our operational existence,we condition. Equipment needing attention focused on "seams" issues-finding is discussed with planning to determine the logical places in our service area if other reliability needs exist on a line to link transmission assets to create or within the geographic area. Projects a smooth-flowing electrical highway are evaluated using various options to r to serve our customers.Those major, determine the best means of maintaining 5 network-driven projects accounted for reliability. I significant investment in the build-out of 11 0 our 345-kV system.As we were making Common needs that drive system our network more interconnected and improvements include: reliable,we also focused on the life-cycle or retiring generation-changes maintenance of our existing assets, the generation impact on transmission • focusing on an asset management • Economics-greater access to the strategy to complement and create wholesale energy marketplace provides ' ' synergies with our network additions. economic opportunities to utility - Today,our effective management of customers transmission components complements • Enhanced NERC reliability standards- our planning strategy for electric reliability require a greater degree of redundancy ' a t and economic benefits, and analysis to assure reliable operation - Public policy-renewable energy In a collaborative process, our asset mandates and pending air-quality management and planning teams regulations will affect how the 4. work with other functional groups transmission system will be built ‘or and stakeholders to achieve the best and used solutions to transmission system needs. i Asset management staff monitor the Asset renewal- maintaining the system through maintenance and system in good operating condition inspection programs to identify issues extends its life and improves safety i ., , •• related to equipment performance or and performance ■ Interconnections- changes in how 1- I` ic our customers distribute electricity to oerconsumers require new or modified 4 .- transmission facilities `r:, . • Load changes-while overall load 4. ar '-' growth is low, loads are appearing .,_ ... , and disappearing; changing power . �. ! ,.. flows on the system Mit A t Q-i - • New technologies-synchronized 1 ' s c t phasor measurements,demand-side ill c _ management and distributed resources `` , affect how the grid is planned and 1-. iii j operated to maintain reliability ItP1 r '� ■ Communications-improvements '.� �'"` in communication technolo such " 4 r 9Y,` _— as fiber optics,are incorporated to '�lilt I � � 1111, _ E__ _ - _ ' a .I I c -�� ti:- __ • w , i• ,,1 I -_ . ' -- • support an ever-increasing need to see 11 h I 1and control what is happening on the k transmission system in real time '...r. T F ..,-4'...-..y ,t'. 2016 SUMMARY REPORT 11 t \ . , 7 (j r1 ) 1 . I i . \ t 1/ /ti.r .� 1 • , ' .ttiA Vi +'1,,. e ;t , r , wq , r� r, ,, t' 1 �; ,, J ****. '' \A . \I . 't I 'Vt. '* • ' ..4 ' T 1� (�, j r ! bN _ t i , ,•1 \ / ....- .. . , ‘...• .: I . .• 11 1111111b, 1 11. .. ,_ , ;.,,,,,,*.:0 cl * '^ 0,f . , j'I I ' r I V , (' I ` t 1 W Plans and p - , : : 1 -- '. r e ransmission system • For planning purposes, ATC's service area is divided into five zones representing distinct geographic r or usage areas.Within each zone, we compile and assess the transmission system needs. ;;r. "0 Project classifications ' Network and asset-renewal projects have targeted in-service dates that are designed to address system limitations and condition needs.The network projects are classified into one of three possible categories-Planned, Proposed or 'r(r- Provisional-depending upon the stage of the project. Planned Proposed Provisional Status of ATC planning activities Studies complete Studies not complete Studies not complete Application for regulatory approval Application pending None None , or issued Project status Project in construction Project identified Project is not • planning phase or under as preferred necessarily the preferred construction alternative project alternative l Asset-renewal projects generally fall into the Provisional or Planned categories. 12 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT NORTH CENTRAL WISCONSIN {ti Transmission system characteristics Electric System Overview in Zone 1 ATC delivers power in Zone 1 with various Small increases expected transmission facilities including: in population,employment qr East west 345 kV line from Arpin Population in Zone 1 is projected to grow Substation through Stevens Point at 0.5 percent annually between now and extending to the Appleton area, 2025. Employment is projected to grow at 1.0 percent annually between now and 345-kV line extending from Wausau 2025. Marathon County is projected to to northeastern Minnesota, realize the largest increase in population 345-kV line extending from Stevens and employment,while Adams County is Point north to Wausau toward eastern projected to have the highest growth rate Shawano County(Highway 22), in population and employment. 115-kV network in the northern portion of the zone, and Electricity usage 138-kV and 69-kV network in the Peak electric demand typically occurs southern portion of the zone. during the summer months,with some winter peaks appearing in the northern Transmission system limitations in Zone 1 portion of the zone. Primary electricity Key system performance issues in users in Zone 1 include a number of large Zone 1 include low voltages and thermal paper mills and food-processing plants. overloads in the southern portion of the zone. These issues will necessitate Electric load is forecasted to grow a combination of reinforcements. For approximately 0.3 percent annually the northern portion of the zone, other through 2026. ongoing studies have identified thermal limitations.The most severe limitations occur during both peak and off-peak periods. COUNTIES INCLUDED IN ZONE 1 - NORTH CENTRAL WISCONSIN 2015 SUMMARY REPORT 13 ,1 l I : i, t • ' .1 I 1 • 1 r , • / • ,.. : f • . .441%,,,i,'+ • • AT . { • am; /i •w _ ` a � 4, 1. �„s!� .4 t:j4� � t / Y • �( / Y'/k � / ,. •,l ' I 0 ! 4 f \N:! , `d4 �.tl 4 r _i t /r£4:Y.' / . / �t J /l yd ' 1 .I�' N, -/ f 4:11: • t. 1i .1 \ ' , ,.. . , . s r +tiJ e ,d+i i jS / / � /-i I e '. �' j , J(i s79 ll f 14 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT NORTH CENTRAL WISCONSIN _ Zont . _ 11114 1M Transmission Projects in Zone 1 The most notable planned, proposed and provisional network projects and asset-renewal projects in Zone 1, along with their projected year of completion and the factors driving the need for the projects, are listed below. Planned Projects 0 Montello-Wautoma 69-kV line rebuild 2016 Condition and performance 1 0 Fairwater-Mackford Prairie 69-kV line construction 2017 Network service, condition, overloads and low voltages 0 Plover- Whiting 115-kV line rebuild 2019 Condition and performance O M13-Reinforcement-Bunker Hill-Blackbrook 2019 Overloads and condition O Coyne-Saratoga 115-kV line rebuild 2020 Condition and performance Additional projects may be found in the full 10-Year Assessment at atc10yearplan.com. System Solutions Key SUBSTATION KEY TRANSMISSION LINE KEY EXISTING TRANSMISSION LINES KEY SS New substation OM 345-kV transmission line Supports transmission system expansion am 115-, 138-or 161-kV transmission line 0 Substation modifications69 kV 161 kV Upgrades equipment ratings to avert facility overloads GIMIlir 69-kV transmission line 115 kV 230 kV 7' O Transformer ■■IN Rebuilt 115-or 138-kV transmission line Supports local growth and improves voltage levels •138 kV 345 kV se a or Rebuilt 69-kV transmission line 0 Capacitor bank or reactor Relieves low voltages or high voltages ••• 115-or 138-kV transmission line rating upgrade T-D T-D interconnection 69-kV transmission line rating upgrade i Supports local growth 2016 SUMMARY REPORT 15 Ashland __...... Iron _.. Sear (OPEC°, ,r, r Wautoma Area "" ° = (/��) W... Waupaca � t rrA `/ AMC An..r.aa P +,ACEC 1.511 1"" ; • ! Adam 0�Tm)•ACEC PYYM. 0M.o. sit....,--..., .•..r, P1....7 C 1 lnwood lake ACEC W. ACEC ' Rose Pump Rosa FoAlley '�ARPeI-' `- �• Florence ACEC 'R., •HeAo.\ Waushara • ,,..e Colo., •. LAM WauteACEC a R ., ACEC ! Sear • �.. PVIYW� V1oe� ACEC lake ACEC \ arA CMI;;;.,RkIh18`--- (ALTEI Lake .w..w.. 73 /y„y ` M Lake vaP� .+.. °e°" 0 Greene j • ...a. .MAs Wesd + Lake .444`+yam""""" • i ACEs'\ �""'"� i I ACEC / ' � ' •........., 4 s... D... Marquette R ACEC ACEC N..1• liON tiio ��� ClCSA •�� an •Ciaek G<aen lTake Sp . . •••••••••• rYE Wl 1' • Oxford , ' SM) SLincoln • 1• . Mnsean �. ran* SMf wl� OM OCOMO ® .......„L is' Prl ww.o re. 1 {Larglade Taylor S.P- eA.AIY OIRA) Da/.all t Pelse Mar athOn - 'e • ChiPflevm 1 • • ti Menominee • WPS) • ""SCorners s.m. R STA •Ow. .A • �'°° C,',a,• =ter.. • • — iSernsonA"r SWYn'M Pars cAle We.. CNEC r*.. WM •"aar M+ .a.a Shawano �• a�.a, m / •Eau .�.� �mE� Claire Clark '•-e Orr* A _ C.. a •Grant. oer. mer awr A' r Port' e RmC 1 r .1mA.e . n cid+ CWE o.. n.kok Wood I ' ...mt.' I Lines of proposed projects on the ,14 i-- p;,�y81111e map are for illustrative purposes only L R�.,. Moo... • Ft— TI Mae essoamis.1 and do not reflect actual routes. •..... . . Waupa For information on project status ° eb.�•�°"� . and routes,see atc-projects.com. » ss SO. mW Pon, el ^/ TrempealeauF-'. . Me � J • Sr.) Or •• EC wume r ~ f iACM `. .. AACEC Pian.. '� 'Winnebago • lr.r itir *.re.. AEC m.mmaamal 11Mr• 1 / Co... Y L ACEC NYf Rom Pump F MOtl..lw- 41 'so ` ` � Waushara `:° - Nr........„,.... r. RePad Adams \ mom.. TantsTom1 Ir Ll LCmna 4` ,`ua 6 u k•... Pr1 M�". 9 K--("tj"' Ec C��Cw CiM IMmuP. Aner '�� �� NCiEI Rn nbuYi/ IS° 11 1a 6Aonoe ! Juneau � `• RmmsTA• Gram RM164R.n F.. m.a La Crosse .. OPC New • Marquette Lake Poa O •Acme,...lr, nap. Ra,... • x••• R A r• ma. 1W 4 nerP.. o La Crosse ""<" .Tei ...,.�, ` Rad �°:.,,. • ea ••• r.e •...�.... ACEC Cr. • i��:��r� R r-r Ham. A. a-.... �..a �:e STA Si Unka • E.Cym, aaea .a l�•wro iUStfX1 spm Ene®.a ., 0 • o.ar� Vernonarale. $auh d, yy�� Mew I ......•t....mF.. .. ddi50n R ,. zmi' y- f,r ...IR..k....9 c... FM..••• Ea . cw. SM . T_Y—(p�.t+.-.+-.- -•-.vim.i . E Dodge R-d..�• :".nn.."----- Pone_i w+ew.•a s.mn c,**i ob., e reen Q smd i•r.ea KTE)• C 'S.re •.,-�... B...nam aaO�u.n! .ana L 16 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT MICHIGAN'S UPPER PENINSULA AND NORTHERN WISCONSIN Zone 2 Transmission system characteristics White Pine.The scope for a transmission in Zone 2 project to address White Pine generation ` 2 ATC delivers power in Lone 2 with various retirements is under review. transmission facilities including: • Morgan-Plains and Plains-Dead River Electric System Overview 345-kV lines, Small increases expected • Plains Stiles 138 kV double circuit in population,employment line, Population in Zone 2 is projected to grow • Lakota Road-Plains 138-kV line and about 0.2 percent annually between now • 138-kV facilities tying the Upper and 2025,and employment is expected Peninsula of Michigan to lower to grow about 0.9 percent each year Michigan. in the same time period. Marquette Transmission system limitations in Zone 2 County(Michigan) is projected to realize There are a number of transmission the largest increase in population and system performance issues in Zone 2 employment. Florence County(Wisconsin) including limited ability to import or is projected to have the highest growth export power, generator instability, rate in population,while Forest County overloaded lines and equipment, low (Wisconsin) is projected to have the system voltages and chronic limitations highest growth rate in employment. to transmission service. Primary drivers Electricity usage of these issues include a mismatch of Zone 2 typically experiences peak electric load to generation in the Upper Peninsula demand during the winter months. and aging facilities in poor or obsolete Ore mining and paper mills are the largest condition. In addition, other ongoing electricity users in the zone. studies, including northern area studies performed by ATC and MISO, have Electric load is forecasted to increase identified several voltage and thermal by 0.3 percent annually through 2026. limitations.The most severe limitations Also, locally generated electricity is occur during both peak and off-peak declining in the area with smaller, periods. coal-fired generators most at risk. This includes generation owned by industry, ATC's capital forecast anticipates municipalities and utilities. reinforcements needed to address pending generation retirements such as COUNTIES INCLUDED IN ZONE 2 - MICHIGAN'S UPPER PENINSULA AND NORTHERN WISCONSIN Alger,Mich. I Baraga,Mich. I Chippewa,Mich. I Delta,Mich. I Dickinson,Mich. I Florence,Wis. Forest,Wis.(northern portion) I Gogebic,Mich.(eastern portion) I Houghton,Mich. I Iron,Mich. I Keweenaw,Mich. Luce,Mich. I Mackinac,Mich. I Marinette,Wis.(northern portion) I Marquette,Mich. I Menominee,Mich.(northern portion) Ontonagon, Mich. ,.astern portion) I Schoolcraft,Mich. I Vilas,Wis.(northern portion) D f A: ,e , s ,dlisa-� s d a aw. + - -- '` GSE +�} �, day - ---- �}„ . 4.` h4h + ..-4. ; ti'U •,.t ,,$1 t ? y E i-�, ,r1 i+ si v 4 -\� �. ��it,, l ate• E E �t,"'")i)/'•','1,•'s...%.} rj*# at l' t t ` sli• to ' d L .Y 7 I is t: s'i i to + .. v "Lr' 4? � 4t • • / ..,, . vr..;.,_ • ,' .4 ! S -Ok t f-,-1k�rJ fit e cE L.1» ),.t „,. _ 04.-., Y f a ; - , • '.,a k.f- }�j l itt r'+/• ° • i.�u�'. ,N;Z:1E Y.lr T yy��iL' ' r § iiir5 s u1` 3•ic J. i':' a+ ti { ""J4. F '� • r ,x pr r t r hpe „ �.1`f t t ,.. fi use t; � s �(. • \ „-,=-4,,,,,...-..,... Y j .. ....,.,...,.... ... . , 4,,,t,„_. .moi ' -_ , , ......1 p ; , .. ,.. ...,:,.......„,.. ,.,,..„...,... :. ,..„...,.....„ • r ..... • ,. .. . ., _' r �i 1 11:. , , • s .„1 , , . . , , I I ji.h. , . , , .,.. , . k.--.„ - . \, ... . , ... . \ ‘, .,,, i \ . s \ r \ \ . \ \ \ II . \ c i laodaa AHV ,.t 18 AMERICAN TRANSMISSION CO. 10 YEAR TRANSMISSION SYSTEM ASSESSMENT • MICHIGAN 'S UPPER PENINSULA AND NORTHERN WISCONSIN Zone 2 Lake Superior "-- K5iweenaw - Transmission Projects in Zone 2 - ;` + The most notable planned, proposed .-< Mmtic, E1w.Ean S and provisional network projects and �.1 ;,,• `, a asset-renewal projects in Zone 2, along O ♦ ki with their projected year of completion , . T.IwI. M+ Hopghton - ., • and the factors driving the need for the / 4°onkso 11 '-- projects,are listed on page 19. • ,.., '++ w I Marquette Pr. "s. r 4 _ ►r. 1. Mao �I 11 i - i... i A Viable Hy, * p Ontonagon w � ,. System Solutions Key _ f ; -araga SM A i __ w Haw • harme.re • SUBSTATION KEY _ r E New substation � SS Supports transmission system expansion ; •I F r.RA Ti .,.�, ..:,. ._. .�-.:..., lam Law SM Substation modifications • Upgrades equipment ratings to avert facility overloads 0 T . • - O Transformer .., F - T Supports local growth and improves voltage levels t I,......7.i Capacitor bank + Lando • Iron w.w M. 5 O Relieves low voltages or high voltagesi.e.. ,u.,..e - Inat ham on.dl OT-D interconnection ■ �.wberty w+moo"" �r. Dicki son T-D Supports local growth • s,ow, Vilas o °�. -T `-.. kY' Perry + TRANSMISSION LINE KEY 7 u � �'�" - rsi HT Forest r t.. . t ,� amp 345-kV transmission line _.m ' - 115-,138-or 161-kV transmission line Woodinin ew... St Getman Florence &Me -Twin r.M¢ - '.A sw STA MOM 69-kV transmission line real + Tti.. $ Florence .y, - Transmission line voltage conversion `-.,I Lakes i � a + ■■■ Rebuilt 115-or 138-kV transmission line I shit ' %r`t. ■■■ Rebuilt 69-kV transmission line Oneida - 6 rw.,r.,dr •Marinette •f11. 115-or 138-kV transmission line rating upgrade rp.r2.0 rm.' thawel 1 ••• 69-kV transmission line rating upgrade S �M.aa. ♦, 1lk ,Mr J Hy EXISTING TRANSMISSION LINES KEY / R n.vla• Erbn i 'Sher *pA, l olmes 69 kV 161 kV aAtS STA10---„Poile 1STR • �a 1``r• w 115 kV 230 kV in In iNPBt Caldron F.lla -T • Grand Ie... 138 kV 345 kV rr\ • SS madam i •nglade Sim Sandstone xw..an Fly it Hydro, f lis•Rn. BunkerH. �./�:. cnvnz 'ASPS) TA SW .oi Pow M,t,,a„��,,, SWSTA SW STA auu)Avi ...., in. ®A " Aurora 81 coons t Menominee - _ (. jMar7 n 1 - snShane,.OcOc onto I Willa + ae. S M Mme!' ! - Shawano .w SN51A „ Acer N...r-� CwEc ..Proreer,WFS; " 4ue.�— "'".4w"'"""oAAA SM a +y l- ,� `•`'"'�-�-wnroane sn.wro sn...no A Loh { Paper Mill ~�' CWEC �� Su.mlm rrklmitit _ / Graph M.Iar BM.__ �.. - Su.nco ` _ oydces.,.e, 2016 SUMMARY REPORT 19 PROJECT DESCRIPTION IN-SERVICE YEAR NEED DRIVER Planned Projects 0 Iv'ir,nisiny - Gvvinn 69-kV line partial rebuild 2017 Condition and performance O 9 Mile- Detour 69-kV line partial rebuild 2017 Condition and performance O Pine River- Hiawatha 69-kV line partial rebuild 2018 Condition and performance O Bay Lake: Benson Lake 138-kV Substation- 2019 Low voltages Installation of a static VAR compensator Provisional Projects 0 Plains-National 138-kV project 2023 Overloads and low voltages O Plains 3451138-kV project 2023 Overloads and low voltages O Plains-Arnold 138-kV uprate 2023 Overloads and low voltages 0 'akota-Winona 138-kV conversion 2021 Overloads and low voltages O Winona-Atlantic 69-kV line rebuild 2024 Overloads and low voltages Additional projects may be found in the full 10-Year Assessment at atcl0yearplan.com. Alger Presque Portage' Isle SW VD ) ,f/f i (, 9.�Oi,SRY. - _ �arquane Desel }r ... _ 1 3M e Saul, man a Luce Chippewa ' Go jl —..f�• '�, t — 6 &imkY De11er Y 9 Mile SW STA ' 11 f Z Slit?' © Fu a Newbury N° ■ . . S,.r�Iif • SansY(AQREA) lRo Pac —♦ �" Kincheloe SWt Ker I c*��-�. 41 P,Y ♦sakWeam San,t •M'"0in � mae.ns SW STA Hulbert Tone test Hamm ,- eM Fo est WPM/ a CCO•clonal Fault, Trout K.Mnloe - , O lana IAD-REAL Lake Forsyth Mackinac Mackinac 1 SM, WSo".•-•41-a+-0-ea Psne ° R�+^b ,`' Schoolcraft ••akr River Rotic xw Lok.te d Engea a a at Rexton La L.stop;arm SW t M STA �.w.ea r_ Delta l -.J Gay (ESE) , � ykatchnon Frank Talerrt.o ��ane BI.MYIY Cels Gay Y 13revort Umessone SW STA 1- Detour ^ Spot SW STA' ` Ouarry. ♦Ment et. L. SW:579�TA Loader,Dock Indian F ♦ Lake N(Ia, Pert'ns ilia, aLW^ ~. :*'�--.` Lakelead Rape River ---,Garden M.nislque `lenESE, \E rpaen ---- il. 4 _'y toms.,./ Jenks M.lumcy♦St lynace Cornell-U Y ♦ NOM �(UPPCO) - inee Chandler(SUIT Gladstone 1 .. 1't°°d' Old Mead Road f'y Paper��Mead $ < �� � T Delta A Pump - .. J.*r`�—(UP-PCOI A Escanaba s Hams West Sta.'', VVV (" ere ♦ Side Plant h+.,w Emmet Cheboygan Presque .., Isle , V Charlevoix s..r - ♦Y Alpen= Montmorency it..• j AntrimLines of r oposed ro ects on the me L, p i P 1 P _ . are for illustrative purposes only and Leelanau r { do not refect actual routes. it For information on project status . il! " s�. and routes,see atc-projects.com. :.k¢i: • y SM Grand Kalkaska Benzie Traverse 20 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT SOUTH CENTRAL/SOUTHWEST WISCONSIN AND NORTH CENTRAL ILLINOIS Transmission system Electric System Overview 1 It *phic characteristics in Zone 3 ATC delivers power in Zone 3 with Increases expected in population, employment Population in Zone 3 is projected to grow about 0.9 percent annually between now various transmission facilities including: Columbia North Madison 345 kV lines, l Columbia Rockdale 345-kV line, Paddock Rockdale 345 kV line, and 2025,and employment is projected to grow about 1.3 percent each year for Paddock-Wempletown 345-kV line, the same time period. Dane County is Rockdale-Wempletown 345 kV line, projected to realize the largest increase in Rockdale Cardinal 345 kV line,and population and employment. Dane County 138-kV facilities from Nelson Dewey, also is projected to have the highest around the Madison area, and in the growth rate in population,while Dodge northwest and southeast portions of County is projected to have the highest Zone 3. growth rate in employment. Transmission system Electricity usage limitations in Zone 3 Electric load is forecasted to grow In our analysis of Zone 3,we identified approximately 1.1 percent annually low voltages, high voltages and through 2026 in Zone 3. transmission-facility overloads. Low voltages are located in the Verona, Lake Geneva and Hustisford areas. Several overloads on 138-kV and 69-kV facilities in Zone 3 are concerns.The causes of these emerging issues include steady growth in certain areas, power plant retirement and different generation dispatch scenarios. COUNTIES INCLUDED IN ZONE 3 - SOUTH CENTRAL/SOUTHWEST WISCONSIN AND NORTH CENTRAL ILLINOIS a._ >r,.= ri • Oar i 4, -4 • •1y .f Tom' -:amu'-? ,•r N _ I • s "" 1 .. ^.. 1t1.. ��€. }'�o�. •t� R j • }, A&,•!1,•• 22 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT SOUTH CENTRAL/SOUTHWEST WISCONSIN lIri AND NORTH CENTRAL ILLINOIS North Cardinal Tomah Gi..sa --_— Ilj a' ustnti Pk Council Creek r/ h Ind'�� •Timbered( Camp ()might. La Crosse Monroe • Transmission Projects in Zone 3 Dorset Comers ? The most notable planned, proposed i. and provisional network projects and asset-renewal projects in Zone 3, along with their projected year of completion _ a.,. and the factors driving the need for the to a rosse area union 1 projects, are listed on page 23. NA ..... W Lines of proposed projects on the map are for illustrative purposes only and do not reflect actual routes. System Solutions Key For information on project status E and routes,see atc-projects.corn. SUISTATION KEY ,h SS New substation Supports transmission system expansion I, SM Substation modifications Upgrades equipment ratings to avert facility overloads Richland Transformer Richland T Supports local growth and improves voltage levels Min Brewer A. My,r.d OCapacitor bank CPC See Pine River C Relieves low voltages or high voltages 1►Center (ALTE) T-D interconnection T-D Supports local growth Crawford 6 La B.. r„ TRANSMISSION LINE KEY ! IN 345-kV transmission line Boeoobel I Iowa Muni -.k4i-�, me 115-,138-or 161-kV transmission line eb Edi A Scecobel imp 69-kV transmission line r, -7 -w" ■■■ Rebuilt 115-or 138-kV transmission line Bds Ol l TJ •III■ Rebuilt 69-kV transmission line Hnlalde DPC Prairie s ran La Pointe AIL D.Chien Grae ••• 115-or 138-kV transmission line rating upgrade ••• 69-kV transmission line rating upgrade EXISTING TRANSMISSION LINES KEY sM j Grant ( 69 kV 161 kV mington 115 kV 230 kV Lancaster boeon ` • Le stet I IL 138 kV 345 kV Dien Hoven Wig« .,Ceeevlll (ALTS) _Belmont Nelson OPS„ Potor • Dewey •Stoneman —�'aad9il.� SW YD Hlllmen iElmo • Cuba Cly )(Haler 2 DPC A Cu De CRy Benton Shulls[ South ♦ Snullsburg , -� to Dubuque County area Miners r" 2016 SUMMARY REPORT 23 Planned Projects 0 Dam Reigns - Portage 69-kV line rebuild 2017 Condition and performance O Kegonsa-Sun Prairie 69-kV line partial rebuild 2017 Condition and performance © Colley Road-Brick Church 69-kV line rebuild 2018 Overloads, low voltages and condition O Badger Coulee: Briggs Rd-North Madison- 2018 Reliability,economics and public policy Cardinal 345-kV line construction Pel. k� 3p Pana © Spring Valley-North Lake Geneva 2019 Overloads and low voltages, ♦r1T�,..- J 4 138-kV line construction provide network service tii tanhlseRdi O Boscobel-Lone Rock 69-kV line rebuild 2019 Condition and performance New Hobts SW.` 0 Portage-Staff-North Randolph 138-kV line rebuild 2019 Condition and performance D 0 Dane- Waunakee 69-kV line rebuild 2020 Condition and performance TA DPI Buckhor *t Hilltop 0 Proposed Project ton• •LTE' ardinal- Hickory Creek 2023 Reliability,economics and public policy 1 Provisional Project ,E; 0 ardinal-Blount 138-kV line construction 2029 Overloads and low voltages Additional projects may be found in the full 10-Year Assessment at atcl0yearplan.com. ?�♦ Finnegan Lakehead _ Westside♦t Waupun Main E• �� Dell W' nein Dolls Muni 1 Portage O Waupon ei Geek Loch TMr Portage ♦ ACEC ACE Prison toff Reedsb g 2obel BlrtXlwand ACE Ind Hamilton Et Cambria Friesiantl NOM Foy Nishan� Fox Lewiton --Mende Park ,. ;•.� Sm0fRa�^ (ALTE) Lake Auburn Reedsburg • SM Hillso^...r" Port` Pardee/ale•Sanborn Cambne•♦Didion I +endo-{It i r,, 1 0 o ♦]Anesien ♦ ,+'�/ Nor T Semler il \�' Rock v k a�Lek Det * 3 Mend Manley Wrocena `,............./..----.--- :/ ; D° Beaver Horionn MawN KIS Islentl CabdpMa ♦ Poo Pumping Dam East Indli _♦♦Baraboo 3 cpwmble sw stanon E ♦ j Beavterr Beaver Dam 3rd St Park Hort erAng iganvilla Moore St S YD(ALTE) ACEC Skillet } Columbia Dam rC.MerAt Juneau ♦! ♦ Greek i O ACEC Celemus Non/wide tHubbartl Bed' Memlma• * Doylestown FY .4' 111. • -� �I all Glacier Sauk '� =oYnahe ♦ River Fountain Juneau Juneau Downtown Reeser Academy Pnine lndusMel Dodge I Valley Lodi oke. Columbus 9 Lord -^�""� ��r� Industrial♦ Anin9lon maple (ALTE) Butler St L. - Arthur Perk ♦ Street Ritlge Road Dam ♦ Lodi Hampden Columbus rd Me hts!Preine Du Columb A Muni 1 *Rubicon 2 Sac Plant • South Washington Mr North Subnlakon Thwer Ninth Madison { m Troy •street Dane 3x5/138 kV r 11 I 1 Sauk City NOM ij ♦Deforest • Sun Prairie Phillips St D°n°'Madison I Vienna Vinbum Business Gemma Spit M000manie Waunakee Division Creek Token Hark 0 SW .wen Arena Arena IndusMal Mazomenie SW STA Strlet ♦ A South Lakaheetl SIonY �� d Berk At Centennial r�Waunakee Colorado WetarNb Brook SW YD River m"� ♦ Jefferson IWPOEdP © Boxekler♦ R InyRd4Cottonw(( � -461 (LL'' Black ewyt Bran Mendota a�EV i Cooney (WE) rMiIIR Earth Towne Gestin Rd Goss Plains S 0 _ Walnut Gateway r E s Tyranena ' Du Stage Coach SW STA ran: GIS ♦ Jl Pearl Timbedane, Blount ;GA mea ♦Cottage Grove Perm Fe Ise 138/69 kV London Crawks • i Waul aha West♦ m ♦PaFemnta. * Lakehead River' `„' ♦ Towne Cambridg Hootervllla Roar �� ♦ Nine !Hail-Hills SM ♦ ♦ Cross FitMburg. Yen• Springs McFarland Combine -�� ��,son Mount Country Verona Oak__tIlndar�-_k"�t.-Ns _v_Christian° � ra. Igeville Horeb ♦yRidge Vd^t Kegmsa Rockdale /Fat Waukes a ilkinson Sun North valley or, Stoughton• Forward ♦ ♦ Stoughton East♦Stoughtonw ♦ i Eg7wod encNew ® Stoughton I SM e n Hollandale Belleville Brooklyn south 1 ♦ ♦ ♦ CoRj University _y� Blanchardville New Green Sheepskin♦C•saal%°`° Rock (NNE) - alta Walworth • Glarus Whitewater Geek ♦ Evansville REC Muni Union Fulton LaMar REG Red "-^^"'^ad r hg°r Monticello A TowNfna ♦ a Hawk /Delavan LTE) • Russell HEC r• R ine ♦ y REC McCue Sugar Center Milton Lawns Creek ♦ Wilcox NOM Albany ♦ Viking 1 ♦T ."---�.l...7"---....'.....Burlington rlington Monroe (ALTE) Foolville �® �...- roe `.♦ Janesville Gond I L- Sunrise RR.. Elkhorn j Aa Idle Brodheatl OAoo�rdvai eGe`ek • SWYDVD Jveobne REC Dalavan (M North Iteici wtla DPC Jennings Hour North A �e.ager [ Il REC Bradford Lake I Graeot Mote Rd SW STA ♦ Brodhead ♦ Phakrp STA[Tripp Rd laprairie Southwest Eerie • ♦ ♦ South OrtoMville �.�•-�yDelevan Brownlown Monroe re Central Brodhead Brodhead River��i West Lake Central South Gas-:s T* Darien Geneva A Blacksmith •• Scot Ctmon rr Atoms • A Spring Brodhead REC NorSIS thwest -•Forge {ALTE) 'h,.5/�WalworthY Zenda Lake Rshmond Grove SW STA Newark Bel`oit 0 _ A A a Paddock��� ♦ Forge 2 m(- BRICK ♦Cobblestone Geneva = Twin Lakes(A Colt krdustrles �",A' .- -.-_..�._._..._-_._._��._.._:_.__... Bleckner*SW VD(ALTE - OitMnson REC ♦Sharon CHURCH KaRenbarg' Kenosha I L L I N 0 I S -.—. SNd • A (AbTEp .erns-„ Ave • Perk Ave REC Shaw A East Rockton 24 AMERICAN TRANSMISSION CO. 10 YEAR TRANSMISSION SYSTEM ASSESSMENT NORTHEAST WISCONSIN 1 Transmission system characteristics Electric System Overview in Zone 4 qr ATC delivers power in Zone 4 with various Increases expected in transmission facilities including: Population,employment Population in Zone 4 is projected to grow • four 345-kV lines extending from the Point Beach Nuclear Plant, at 0.7 percent annually between now and 2025. Employment is projected to grow • two 345 kV lines extending from the at 1.1 percent annually between now and Edgewater Power Plant to South 2025. Brown County is projected to realize Fond du Lac and Cedarsauk, the largest increase in population and • two additional 345-kV lines connecting the South Fond du Lac employment,while Calumet County is projected to have the highest growth rate Power Plant to Columbia and in population and employment. Fitzgerald, • four 345-kV lines connecting the Electricity usage Gardner Park,Werner West, Morgan Peak electric demand typically occurs and Plains substations, during the summer months, although • four 345-kV lines from North Appleton the northern portion of Zone 4 typically to Kewaunee, Fox River,Werner West experiences nearly equal summer and and Fitzgerald, and winter peaks. Paper mills and foundries in • a 138-kV network throughout the and around the Green Bay and Appleton zone. metropolitan areas are some of the largest electricity users in the zone. Transmission system limitations in Zone 4 Electric load is forecasted to grow at In our analysis of Zone 4,we continue approximately 0.5 percent annually to monitor potential high voltages in through 2026.Also, locally generated Outagamie and Calumet counties and electricity is declining in the area with impending low voltages in Brown County. smaller,coal-fired generators most at In addition,other ongoing studies have risk.This includes generation owned by identified several voltage and thermal industries, municipalities and utilities. limitations.The most severe limitations occur during both peak and off-peak periods. COUNTIES INCLUDED IN ZONE 4 - NORTHEAST WISCONSIN ara•- ........ al.. am. to...... e".•••• eD ......... _ -_ _. : . .,,\ .., . • - \ ,e 1 - 0 Q \ # \. ,7, •.: . 4 oNaw .,..,, . , ..' ...- ' fliplimaim I..........p.w. mum., -..4_ _'-••••••••.'. . 1 ....... .-_. •,..,. ''., ' . , . .. 49S1: -.. . . ..,,.. , . . . .4001., I . . ,., / - ir• , 1.1.:' . , i "We•1,'t ii -.- ,. • : : ../. . ! . -•_,.,.,_, . .,....'...,- . .-I 4 . ;___! .. \ . N , ..:-.0 ... . ,...___ ..,/\ . .. .. ... ..... . L .. . \ / \ .. ._ .. . , ! -4, . (..• i . i 0 . i i %... 11. - . :., 171" ..., - 'M.MEP ' , . i 1 \1N ',-- • ' \\ 1 . :'..' 1 117711.-1 I k - ill ': : • / • - --r , .1'1 • , r' r • 8 4... . Ili " , .-...-L.L.I.A..... ... •. , I_ 28 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT ►_ RT AST WISCONSIN L Zo ` e4 I1_.n f a Transmission Projects in Zone 4 The most notable planned, proposed and provisional network projects and asset-renewal projects in Zone 4,along with their projected year of completion and the factors driving the need for the projects,are listed below. PROJECT DESCRIPTION IN-SERVICE YEAR NEED DRIVER Planned Projects OPulliam-Glory Road 138-kV line conversion 2016 Overloads and low voltages © Creekview Substation: 138-kV line construction 2017 D interconnection T-to serveT-D interconnection © Bay Lake: North Appleton-Morgan 345-kV 2018 Overloads and low voltages and 138-kV line construction O Branch River 345-kV Substation construction 2018 Accommodate new generation © Cedar Ridge Wind Generation-Mullet River 2019 Condition and performance 138-kV line rebuild O Finger Road-Canal 69-kV line rebuild 2021 Condition and performance Proposed Project OOgden St.-Bayshore 69-kV line construction 2018 Provide network service Provisional Projects 0 Morgan-Thunder 138-kV project 2023 Overloads and low voltages © Morgan-Plains 345-kV loop into new Thunder 2023 Overloads and low voltages 354-kV line rebuild 0 Aviation-North Fond du Lac 138-kV line rebuild 2025 Overloads • Shoto-Custer 138-kV line 2026 Overloads and low voltages Additional projects may be found in the full 10-Year Assessment at atcl0yearplan.com. System Solutions Key SUBSTATION KEY TRANSMISSION LINE KEY EXISTING TRANSMISSION LINES KEY New substation MR .S Supports transmission system expansion 345-kV transmission line SM Substation modifications OM 115-,138-or 161-kV transmission line 69 kV �.�„ 161 kV Upgrades equipment ratings to avert facility overloads aim 69-kV transmission line 115 kV 230 kV OTransformer MID T Supports local growth and improves voltage levels Transmission line voltage conversion Capacitor bank or reactor 111 Rebuilt 115-or 138-kV transmission line 138 kV 345 kV C Relieves low voltages or high voltages iMr sI* Rebuilt 69-kV transmission line T—D T-D interconnection ••• 115-or 138-kV transmission line rating upgrade Supports local growth 0 M 0 69-kV transmission line rating upgrade ' Sax Fax kalla . . ,... .nornineer:, ,-,.- :E,444 r—M11 clA ,1 ., 11,SW STA • 1 ' ,e,:',-"-• . '‘,..;: ',... 41 tki.‘j R.27,1 '''•" ! : CAW.• Langlade FOX 4.ily ! 4:111 i Man Hat . , Faas Hy f . 1. co Seadalow . , . Sister Se,ELe . Mora. . • Bay • Grkoltx , ., . • Poka f . Alik —.. .., %A c• • a , ,z.70., , ... :arbor fivl D., Oconto Tree Menominee ( A Lens k. I.Addie •t Door :..' At ,n Brooks Grnan Psan Rd ( Pioneo) Fas WPS) (,) SW STA F4. ‘,, . • , Fr. - • V ,1 Sawyer SW STA il i ! Shawano SM : i .• en.. •• * A amrsano • OINK smiik . • ,....,.„., lb' • a i . • .r 1 R. .? / Man. i A " ii.L,,3 • Or"... .1/ rj MkI , •Gay IarSM Kewaunee c lA Nal ' • Maar St ...-., LRd i STA•iii awn IrVa Rh St 6rli• ilineelAltell- Liberty S • II , I 1 P... lasnavn Glory Rd Ao.'70' Waupaca GIQR0o.,.. 7. , S' ., _-—_-- - Wm. Outagamie 0 ..... ovt—crAvs) 10,,"'- All r • "----- Ytk ekv ........ Row., Pa* Knoltatela SYPIRD . Paint rBrah . TO CD / Maas ief..... 1 ricir111111h... 4 ... . r LIM a CI.x larklaarakilla waushara I Winnebago AD .1.144111100 45; ' ju"lj 11 • - It IroiWarica M4lit.0•0C •, A 'r _. F01111., i 0 Green Bay Area ..,..n.e i .-- . iltaaars ..i a r.talasironi SW i i r Gornars /5 Calu et Oa./1 Howard . '',. Pullen,0 0 Sun. Po./ 4 ,i r......a •a s> -... •••—t A A oid, Pear,. • ko. Trier Dr 4,' 1 • } A .,-)Towns.ReLor% 4 Ill e•. River AA I 1SW STA 1 . .1 il Fond\ , ,--..... ..,Rdv Du Lac :A' T_DitN, Sheboy anA... Awn.„,,,,,.,„ Sa.Brk.Nry ''''''• Pm. ''''''.'F''' • SW STA. • Brov,n A 1 • A ,a,,,,,r, .,-------A 'Lake 7131..ne.11Fss- Gbasy Roof 14.1, Du lac S.. Darnan Herth ---.--ti"---"e• 1 "'"'. •,°: ''.7.4o.,..., '''''''‘''' f:kc.***...,.. ,•, ,.• ohms.. .0= Ph,nOtnn s.3, launossal • ' 4 ''''''' .• 40001. ' '-'= A‘ m"r'" '''''t) ,..a.og, + •"urit i,' , ..- -, Brandon • ikaa..,,m kaorar Sa.T.U.'S:Y. t,,,,,,,:lklaran Rd ca, di" Adares.'„e-,-.11,Edge..Syr VD elramisr -- mean MOP sm. rweone.a p,... J....7...r,--- -kr *----Grairsid• i ' Sheboygan 1 Falls Alto * • ly.. Lines of proposed projects on the map , • T- ).12 I are for illustrative purposes only and ( i Dodge WeL.ELro Prison • J do not reflect actual routes.For information on project status and routes,see e'shgencli rn: t •• ' sike, Fox Lek. MS., atc-projects.coaL 1 North , 1 rn I, Ba.ar f ,Darn East A Washington H-- -LA 4et Darn 310 SI 'r'd":LL'^'L' L-L ,,L 28 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT SOUTHEAST WISCONSIN Transmission system Electric System Overview iiiopo ill characteristics in Zone 5 Increases expected in i�iC delivers power in Zone 5 with various transmission facilities including: southern portion of 345-kV lines from Point Beach and Edgewater, Saukville,Arcadian, Granville, Oak Creek,and Racine 345/138 kV substations, population, employment Population in Zone 5 is projected to grow 0.4 percent annually between now and 2025,and employment is projected to grow 1.1 percent in the same time period. Waukesha County is projected to realize the largest increase in both population and transmission lines emanating from employment.Waukesha County also is the Pleasant Prairie and Oak Creek projected to have the highest growth rate power plants, in employment,while Washington County 230 kV facilities near Milwaukee,and is projected to have the highest growth a significant 138-kV network in the rate in population. Milwaukee area, a portion of which is underground. Electricity usage Peak electric demand typically occurs Transmission system during the summer months. Large limitations in Zone 5 industrial loads in the Milwaukee Transmission system performance issues metropolitan area are among the largest in Zone 5 include heavy market flows electricity users in the zone. to and from the south, resulting in high 345-kV and 138-kV line loadings and Electric load is forecasted to grow the need to monitor potential multiple approximately 0.6 percent annually contingency conditions. through 2026. COUNTIES INCLUDED IN ZONE 5 — SOUTHEAST WISCONSIN 1 • • S of 1 r t ��. , EyK• , } \ `l' ''' ' �{k t !' I. ,t fly: `' Jr • ,t • il _ hili " • r • , ;! m . iris t ,f VW— si 1 \. • ,.. .\. 1• 1 4'' *' 'r.d a.1 tok,k l f x .': ' • { .. ,A-,•` '. " _- - � rte. i ��' _4 �`i .. �.`�.`�. •9.10 it . • r1 i t p roh i p t►r • i .st... .' ]t .. ' ! A fi • a , f . tet ,`;I." aaoQktis t •qE - I `.� • '-,1fV6I.-1'''-•-?-'-- _ , M:f'--7-.45t.- -..---',-A F _c.-_.,t'''-'''Alit'------.,- ------y. 4�1•. • ''''.1.- T i .11 I fa FX i .i- u ,-. , P -I,__ , `a}.yam )(q�tt •:.r YY: 4,, ? ii'.` a4, #r4. •ltd- _ q , • y'' Y 4 ti w '. uy # 4 4 r liji 1.".' ' .. h. ---rfgreC — \ \ r3 J 3$ T !* '1'''ilkillitl G 4 4_ il‘, 62 Od3a AaVWWnS 9LOZ \ 30 AMERICAN TRANSMISSION CO. 10-YEAR TRANSMISSION SYSTEM ASSESSMENT SOUTHEAST WISCONSIN girl11140. Transmission Projects in Zone 5 The most notable planned, proposed and provisional network projects and asset-renewal projects in Zone 5, along with their projected year of completion and the factors driving the need for the projects, are listed below. Planned Projects O Oak Creek-Hayes 138-kV upgrade and reconfiguration 2018 Overloads O Spring Valley-North Lake Geneva 2019 Overloads and low voltages, 138-kV line construction provide network service © Mukwonago-Edgewood-St. Martins 2019 Condition and performance 138-kV line rebuild Proposed Projects O Southeastern Wisconsin-Northeastern Illinois 2020 Overloads Interface Project O Port Washington-Saukville 138-kV line rebuild 2021 Overloads O Arcadian- Waukesha 138-kV rebuild 2025 Overloads • Additional projects may be found in the full 10-Year Assessment at atcl0yearplan.com. System Solutions Key SUBSTATION KEY TRANSMISSION LINE KEY EXISTING TRANSMISSION LINES KEY 0 New substation II 345-kV transmission line Supports transmission system expansion ^, 69 kV 161 kV OM 115-, 138-or 161-kV transmission line 0 Substation modifications Upgrades equipment ratings to avert facility overloads =ID 69-kV transmission line 115 kV 230 kV OTransformer ■■■ Rebuilt 115-or 138-kV transmission line Supports local growth and improves voltage levels of IF Pii Rebuilt 69-kV transmission line138 kV 345 kV OCapacitor bank or reactor Relieves low voltages or high voltages ••• 115-or 138-kV transmission line rating upgrade T-D interconnection ®•• e 69-kV transmission line rating upgrade T-]) Supports local growth 230-kV transmission line rating upgrade 2016 SUMMARY REPORT 31 kt. .i / j / Auburn i' • :redo la I HomanBrook 1 0 aukee ne P.Park Barloo Dodge - emir a Juneau • """° Washington Washedron WYD l V.INy . .... _`+-.. _ SRI Huallelonl Vh. ' NN.. 1 r i ilx. 2 Waukesha ro D In lima •. atilla C �°�' H YNY tJna 11••••• SNSla Dal llrl.sW • GrgW Gan Ile y COm•y (� ) t Comm-Nix.otN T Summi I ox 4 ...awe /1.im.1 CTr SW YEI SQU.R • B1N111tlIM /^.�O Conrwr�t 31 +Ev.rN1 S� S� n rWrEcr a;$ n Gmea WC' CD Maximi r RuvN � u,mx, ne. HMO ,�i 0 f ' 5. r 4 PEi�e1 W.a s1 M,� wm.rl i AWrbn SINBtT rN Y 1/f ! Milwaukee C) r 0 s I reE, Merlin 8iench,, - AO° i1 'N c Eop..00a 'Sr.1 ?. ...� P,R.5M..''' 0 MWcwonegp _- Rna ,V o.ari o.i cr..t sW (coNs zawv� sw rD SRI . i D So.a Walworth Y _ iL._,..__ °ate•-' � ‘3+ss...re 1 soar e Cgs. 1 0,,,,___ Tledim \ Racine \ti\ J! \` 39„ ! L-�--- Room ten, Sw 1 srl Elkhorn11W .P.. l' 1 ' � \`,i J euml.� ' ��/not ,lim i�. ' Samero l • SR1 SwNr..,r I ..�Ve \, 1 w 15/' ,."°• 3 © k S Lines of proposed project on the map • Kenosha I Lo._,Lam .; are for illustrative purposes only and iGOYIM. r { { { do not reflect actual routes.For • •• A.elLams(LLTE) - I information on project status and • '°""`°■»_IR fachmend ,a ? routes,see atc-projects.com. ILLINOIS _ Jetta, PRSRT STD U.S.Postage AMERICAN TRANSMISSION COMPANY' PAID Permit#4607 P.O. Box 47 Milwaukee,WI Waukesha, WI 53187-0047 lllnlnlllultu11111111111lllllltlltllllln1,111Iillllll.nllln • *********'E********AUTO**3-DIGIT 996"'274*554551 City Of Seward John Foutz-Utility Manager 410 Adams Street PO Box 167 Seward,AK 99664-0167 Helping to keep the lights on, businesses running and communities strong® ATC ATA GLANCE • Formed in 2001 as the first multi-state, transmission-only utility • Owner and operator of more than 9,540 miles Lake Superior of transmission lines and 548 substations • Meeting electric needs of more than five million people in 72 counties in four states: Wisconsin, Michigan, Minnesota and Illinois Wisconsin • $4 billion in total assets ' I CONTACT Mail P.O. Box 47 • Waukesha, WI 53187-0047 Minnesota _ zone4 Toll-free 866-899-3204 Lake Email info@atcllc.com Michigan Iowa More detailed information is available at atclOyearplan.com Illinois -jilltrog/ AMERICAN TRANSMISSION COMPANY® atcllc.com Would you like a speaker from ATC to address your group? Give us a call, toll-free, at 866-899-3204, ext. 8679. • aim MI 1 MEN DER