2015 - atc 10 year assessment · this report contains a summary of atc’s planning initiatives, as...

2015Summary

Report

10 -year transmission system assessment

ATC continues to focus on its duty and responsibility to plan, operate, build and maintain a robust electric transmission grid serving portions of Wisconsin and the Upper Peninsula of Michigan. The five million electricity consumers who receive power over the ATC system have experienced improved reliability, and the grid is providing our customer utilities with greater access than ever before to regional energy markets. This has helped moderate electricity costs for consumers and bring renewable energy to market.

ATC continues to evaluate the grid to meet future electric system needs. We expect the next 10 years will bring new challenges, including changes in generation sources due to the Clean Power Plan. We expect that ATC’s build‑out of the transmission system in our service area will be slowing down, while the need to efficiently maintain and upgrade older assets already is ramping up. Our investment forecast for the next 10 years is a reflection of this reality.

Because the grid is interconnected across a vast multi‑state area, one of the best ways to take care of our own backyard is to understand what our neighbors are doing in theirs. Regional planning continues to play a prominent role in maintaining and operating ATC’s transmission system. ATC is a leader in the Midcontinent Independent System Operator process to efficiently adapt and expand transmission resources to meet the changing needs of the regional energy marketplace.

This report contains a summary of ATC’s planning initiatives, as well as an overview of network and asset renewal projects in each of our planning zones. The 2015 10‑Year Assessment covers the years 2015‑2024 and forecasts $3.7 billion‑$4.5 billion in system improvements.

For more detailed information, please visit www.atc10yearplan.com.

Ron Snead John McNamaraVice President, System Planning Vice President, Asset Management

Improvements increase reliability, access to regional markets

AMERICAN TRANSMISSION CO. 2015 SUMMARY REPORT | 10‑YEAR TRANSMISSION SYSTEM ASSESSMENT 3 2

2011 2012 2013 2014 2015

Specific Network Projects $1.0B $1.9B $1.2B $1.4B $1.4B

Regional Multi‑Value Projects $0.7B $0.8B $0.5B $0.5B $0.5B

Asset Maintenance $1.0B $1.1B $1.1B $1.2B $1.4B

Other Capital Categories $1.1B/$1.7B $0.1B/$1.0B $0.2B/$0.8B $0.2B/$0.8B $0.4B/$1.2B

Total 10‑Year Capital Cost $3.8B/$4.4B $3.9B/$4.8B $3.0B/$3.6B $3.3B/$3.9B $3.7B/$4.5B

Transmission investments The 10‑year projections from past and current Transmission System Assessments

Market constraintsTwo of the five narrowly constrained areas identified in the MISO region are associated with ATC, and we continue to track these as well as other constraints. Such tracking assists in planning projects that alleviate congestion within the MISO market. The Badger Coulee project should help alleviate congestion on the Minnesota to Wisconsin Exports Interface, which has been one of the most significant constraints for ATC over the last several years.

Other MISO planning activitiesOur planning staff participates in various technical and policy discussions and provides future direction for MTEP activities. We also are involved in joint planning studies with neighboring regional transmission organizations, including PJM and SPP. MISO and PJM coordinated, conducted and analyzed several market efficiency project studies. This analysis is reviewed by an inter‑regional planning stakeholder advisory committee and typically examines economic projects that could benefit both RTOs and qualify for cross‑border cost‑sharing.

Midcontinent Independent System Operator Transmission Expansion Planning MISO planning studies address long‑ and short‑term issues as well as targeted needs. Long‑term studies primarily look at value‑based options that provide economic benefits in the 10‑ to 20‑year horizon. Short‑term planning is primarily driven by transmission owners’ reliability and North American Electric Reliability Corp. compliance needs in a five‑ to 10‑year period.

MTEP 15Our staff participates in the short‑term reliability and economic studies in a variety of ways: ensuring accurate project information is included in the MISO database, building and reviewing models, correlating needs identified by MISO analyses with specific ATC projects and participating in various studies and stakeholder forums.

ATC has developed a guideline for placing projects into MTEP appendices based on project status and in‑service date. The guideline is based on typical lead times for projects, which can be affected by regulatory filings or time to procure equipment.

Regional and economic planning update

ATC continues to participate in a variety of efforts to address regional and inter‑regional planning initiatives designed to maintain a reliable grid and capture economic benefits in a dynamic energy marketplace. Policy initiatives to curb greenhouse gas emissions and expand renewable energy usage continue to evolve, and we work closely with our customers to plan for a system that will meet their needs well into the future.

4 AMERICAN TRANSMISSION CO. 2015 SUMMARY REPORT | 10‑YEAR TRANSMISSION SYSTEM ASSESSMENT 5

Two of the five narrowly constrained areas identified in the MISO region are associated with ATC, and we continue to track these as well as other constraints. Such tracking assists in planning projects that alleviate congestion within the MISO market.

Mackinac HVDC StationThe HVDC flow‑control device placed into operation in 2014 has improved electric reliability in the Upper Peninsula of Michigan and northern Wisconsin. Previously, the transmission facilities in the eastern U.P. were tied to Lower Michigan, and the western U.P. facilities to northern Wisconsin because the system could not support the flow of power across the width of the peninsula. The HVDC device now facilitates that support, and provided benefits almost immediately. An unplanned outage on transmission facilities in northern Wisconsin in fall 2014 almost surely would have caused customers in the U.P. to lose service without the new facility, but the HVDC device provided system support, maintaining reliability by allowing a continuous flow of power.

Northern Area Reliability AssessmentATC initiated an effort in 2014 to engage stakeholders and identify potential reinforcements due to generation uncertainties in the northern portion of the ATC system. The 10‑year project list includes the following preliminary projects:

n Plains‑National 138‑kV linen Plains‑Arnold 138‑kV line upraten Increased Plains 345/138‑kV

transformer capacityn Morgan‑Thunder‑Crivitz

138‑kV project

ATC is collaborating with MISO to include these projects in MTEP 15. ATC is supportive of efforts in Michigan to add generation in the area and will continue to assess the need for these projects as generation proposals mature.

Southeast Wisconsin‑Northeastern Illinois InterfaceWe are studying a reinforcement project to address reliability concerns associated with the Southeastern Wisconsin – Northeastern Illinois Interface. The project consists of reconfiguring two 345‑kV lines in Wisconsin and Illinois, linking them with about three miles of double‑circuit 345‑kV lines and a new substation.

ATC has introduced the proposed project to the MISO regional planning process. The preliminary cost is estimated to be $52 million, with a projected in‑service date of 2020.

Spring Valley‑North Lake GenevaNew and upgraded transmission facilities are needed to meet an increase in electric demand in Walworth and Kenosha counties in Wisconsin. The project involves:

n Construction of a new 138‑kV transmission line of approximately 25 miles, stretching from the North Lake Geneva Substation in southern Walworth County to the Spring Valley Substation in western Kenosha County

n Construction of a new 138‑ and 69‑kV substation on an ATC‑owned parcel along Highway 50 in the Town of Wheatland or at the Richmond Road Substation site in the Town of Randall

n Construction of a new 69‑kV transmission line to connect the new substation to the existing Twin Lakes Substation in Twin Lakes

n Depending on the route and substation site, other power line modifications may be needed

The $71 million to $91 million project is being reviewed by the Public Service Commission of Wisconsin. If approved, construction would begin in 2017 to meet a 2019 in‑service date.

Badger CouleeBadger Coulee, one of MISO’s 17 Multi‑Value Projects, was approved by the Public Service Commission of Wisconsin in April 2015. The 180‑mile, 345‑kV line between the La Crosse and Dane County areas will deliver reliability, economic and public policy benefits. Sponsored jointly with Xcel Energy, the project will:

n Offset the need for about $150 million in lower‑voltage upgrades in western Wisconsin,

n Increase access to the wholesale energy market and provide between $118 million and $702 million in net economic benefits over the life of the project and

n Establish another pathway for renewable energy into Wisconsin with a connection to key load centers.

Construction is set to begin in 2016 to meet an in‑service date of 2018.

Bay Lake The Bay Lake Project is a package of proposals intended to address the delicate, shifting balance between generation, load and transmission in the northern portion of our service area.

Construction of the $120 million Holmes‑Old Mead Road portion of Bay Lake began earlier this year. It includes a single 58‑mile, 138‑kV line from the Holmes Substation in Menominee County to the Old Mead Road Substation in Escanaba, Mich. Anticipated in‑service

date is mid‑2016.

The North Appleton‑Morgan portion includes 345‑kV and 138‑kV lines from our North Appleton Substation in Outagamie County to the Morgan Substation in Oconto County, Wis.; both substations will

be expanded. A new substation, Benson Lake, will be required to accommodate a large voltage‑control device at the site of our Amberg Substation in Marinette County. 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 is expected to begin in 2017 with an

in‑service date of 2019.

Cardinal‑Hickory Creek American Transmission Co. and ITC Midwest LLC have plans for a high‑voltage transmission line connecting northeast Iowa and western Wisconsin. A study area from Dubuque County, Iowa, to Dane County, Wis., has been identified for the approximately 125‑mile, 345‑kV line.

The Cardinal‑Hickory Creek project is another of MISO’s Multi‑Value Projects. Studies indicate that Cardinal‑Hickory Creek is a multi‑value project that would deliver benefits to local communities and the Midwest region by:

n Improving electric system reliability locally and regionally

n Delivering economic benefits for utilities and electric consumers

n Expanding infrastructure to support public policy for greater use of renewables

If approved by Wisconsin and Iowa regulators, construction is anticipated to

begin in 2019.


Major project update


Our progress

One of the first efforts ATC undertook when it began operations in 2001 was to improve transmission capacity through better coordination of planning, construction and operation of transmission assets. Prior to ATC’s creation, the transmission grid in our service area was operating at its limits. There was little incentive for transmission owners to make investments in the system; it was geographically constrained by its presence between two of the Great Lakes and outages of major generators exposed weaknesses in the capability of the grid.

ATC developed a system‑wide planning process to effectively and economically improve electric reliability. Today, after $3.5 billion in investment, we have created a grid that enables our customers to participate in and reap the benefits of the wholesale energy market. Our flexible, responsive planning process also is adapting to the changing ways the grid is being used to realize the economic opportunities provided by that marketplace.

Due in large part to our asset management efforts, our reliability has remained best‑in‑class in several industry benchmarking studies. For 2014, we scored in the top decile for 100‑kV to 161‑kV performance and top quartile for 345‑ to 500‑kV and 69‑kV performance with our peer transmission operators.

The value of our single‑focus, transmission‑only company is highlighted by our unparalleled success in planning, siting, building, maintaining and operating electric transmission.

Since we were formed in 2001, we have:n Upgraded more than 1,944 miles

of transmission lines,n Improved 170 electric substations, n Built 51 new transmission lines

(621 miles),n Connected 6,000 MW of new

generation at 24 sites, n Saved customers more than

$100 million a year in reduced energy costs with access to the marketplace and lower line losses,

n Increased import and export capability and

n Improved transmission reliability.

1,944miles of transmission line

UPGraDeD

6,000of new Generation at 24 sites

ConneCteD

$100in enerGy Costs

Per year

saveD

mw

million

Early in our operational existence, we focused on “seams” issues – finding the logical places in our service area to link transmission assets to create a smooth‑flowing electrical highway to serve our customers. Those major network‑driven projects accounted for significant expenditures in the build‑out of our 345‑kV system. As we were making our network more interconnected and reliable, we also focused on the life cycle maintenance of our existing assets and on an asset management strategy to complement and create synergies with our network additions.

Today, our effective management of transmission components complements our planning strategy for reliability and economic benefits.

In a collaborative process, asset man‑agement and planning work with other functional groups and stakeholders to achieve the best solutions to transmission system needs. Asset management staff monitor the system through maintenance and inspection programs to identify issues related to equipment performance or condition. Equipment needing attention is discussed with planning to determine if other reliability needs exist on that line or within the geographical area. Projects are evaluated using various options to determine the best means of maintaining reliability.

What drives the need for transmission system improvements?


Our planning strategy

complements our asset

management efforts to

effectively maximize

reliability and economic

benefits.

Common needs that drive system improvements include:n New or retiring generating

units – changes in generation impact transmission

n Economics – greater access to the wholesale energy marketplace provides economic opportunities to utility customers

n Public policy – renewable energy mandates and pending air quality regulations will affect how the transmission system will be built and used

n Asset renewal – maintaining the system in good operating condition extends its life and improves safety and performance

n New technologies – synchronized phasor measurements, demand‑side management and distributed resources affect how the grid is planned and operated to maintain reliability

n Communications – improvements in communication technology, such as fiber optics, are incorporated to support an ever‑increasing need to see and control what is happening on the transmission system in real time

n Interconnections – changes in how our customers distribute electricity to consumers require new or modified transmission facilities

Plans and proposals for the transmission systemFor planning purposes, we divide our service area into five zones representing distinct geographic or usage areas. Within each zone, we assess and compile the transmission system needs.

Project classificationsNetwork and asset renewal projects with targeted in‑service dates are designed to address system limitations. The network projects are classified into one of three possible categories – Planned, Proposed or Provisional – depending upon the stage of the project.

Planned Proposed Provisional

Status of Studies Studies Studies ATC planning

complete not complete not complete activities

Application Application for regulatory

pending or issued None None

approval

Project in Project Placeholder project;

Project status construction planning identified not necessarily a phase or under as preferred preferred project construction alternative alternative

System solution included in

Project Project Project generation included not included not included

interconnection power flow models

Transmission system characteristics in Zone 1ATC delivers power in Zone 1 with various transmission facilities including:

n East‑west 345‑kV line from Arpin Substation through Stevens Point extending to the Appleton area,

n 345‑kV line extending from Wausau to northeastern Minnesota,

n 345‑kV line extending from Stevens Point north to Wausau toward eastern Shawano County (Highway 22),

n 115‑kV network in the northern portion of the zone and

n 138‑kV and 69‑kV network in the southern portion of the zone.

Transmission system limitations in Zone 1Key system performance issues in Zone 1 include low voltages and thermal overloads in the southern portion of the zone. These issues will necessitate a combination of reinforcements. For the northern portion of the zone, other ongoing studies have identified voltage and thermal limitations. The most severe limitations occur during both peak and off‑peak periods.

ELECTRIC SySTEM OVERVIEW

Slight increases expected in population, employmentPopulation in Zone 1 is projected to grow at 0.6 percent annually between now and 2024. Employment is projected to grow at 1.0 percent annually between now and 2024. Marathon County is projected to realize the largest increase in population and employment, while Adams County is projected to have the highest growth rate in population and employment.

Electricity usagePeak electric demand typically occurs during the summer months, with some winter peaks appearing in the northern portion of the zone. Primary electricity users in Zone 1 include a number of large paper mills and food processing plants.

Electric load is forecasted to grow approximately 0.4 percent annually through 2025.

NORTh CENTRAl WISCONSIN

Zone 1ONEIDA

LINCOLN

MARATHON

WAUPACA

SHAWANO

WOOD

JUNEAU

ADAMS

PORTAGE

WAUSHARA

MARQUETTE GREENLAKE

LANGLADE

Counties included in Zone 1 – North Central Wisconsin

Adams

Forest (southwestern portion)

Fond du Lac (northwestern portion)

Green Lake

Juneau

Langlade

Lincoln

Marathon

Marquette

Monroe (eastern portion)

Oneida

Portage

Shawano (western portion)

Vernon (eastern portion)

Vilas (southern portion)

Waupaca

Waushara

Winnebago (western portion)

Wood


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ACECDellwood

NeenahCreek

Montello

ADAMS

ASHLAND

BAYFIELD

CHIPPEWA

CLARK

COLUMBIA

CRAWFORD

DANE

DODGE

EAUCLAIRE

FLORENCE

FONDDU LAC

FOREST

GREENLAKE

IRON

JACKSON

JUNEAU

LA CROSSE

LANGLADE

LINCOLN

MARATHON

MARINETTE

MARQUETTE

MENOMINEE

MONROE

OCONTO

ONEIDA

OUTAGAMIE

PORTAGE

PRICE

RICHLAND

RUSK

SAUK

SAWYER

SHAWANO

TAYLOR

TREMPEALEAU

VERNON

VILAS

WAUPACA

WAUSHARA

WINNEBAGO

WOOD

WestShawano

Tomahawk -ATC 115kV

Mercury Marine

GrandfatherFalls

Milwaukee Valve

Sigel

PortEdwards

Arpin

West Wisconsin Rapids

Winneconne

Wautoma

SandLake

ChaffeeCreek

Iola

Watersmeet

Woodenshoe

Rubicon

Butternut

Casaloma

Conover

Badger

Whitcomb

WhiteClay

RockyRun

Arnott

Lawn Rd

Petenwell

GreenLakeSW STA

South Fond DuLac SW YD

Ohmstead

Metomen

Mayville

SpringBrook

Academy

NorthRandolph

Trienda

WhiteLake(WE)

Hilltop(ALTE)

CrystalFalls

Mckenna

Vesper

WildRose

Wittenberg

WestMauston

Wonewoc

Tomah Industrial Pk

Troy

RockSprings

Rozellville

RiponInd Park

Rudolph

SadoffCo

Strawberry Hill

Pittsville

PortageInd

Park

Poynette

Randolph

RedGranite

Richland

Ripon

Rosendale

NorthTomah

Okee

Omro

Merrimac

Moore St

Necedah

Loganville

LakePark

LincolnPump STA

LyndonStation

Manawa

Markesan

ManleySand

Mauston

Hillsboro

HoriconInd Park

IslandKirkwood

FallRiver

FountainValley

Friendship

GaysMills

Hamilton St

Columbus(ALTE)

Brandon

BrooksCorners

CampDouglas

Beaver Dam 3rd St

AppleHills

Baraboo

Hampden

Auburndale

BellePlaine

ACEC Turtle Lake

Ledgeview

EastShawano

Artesian

DPC LyndonStation

Hancock

LakeDelton

Dartford

DorsetCorners

SilverLake(ALTE)

Mears Corners

Ellinwood

12th Ave

Bowen St

OshkoshPearl Ave

Progress

SunsetPoint

Cranberry

GoldenSands

Hoover

Northpoint

Venus

Hodag

St Germain

ThreeLakes

Mountain

FoxHills SW

STA

SilverCliff

WienSW STA

Kelly

Morrison Ave

Sherman St

Stratford

WestonSW YD

Eastom

BunkerHill

SW STA Aurora StBlackbrookSW STA

McMillan

CWECSannes

ACECArrowhead

ACECChateau

ACECColoma

ACECFriendship

ACECGlen

ACECGrant

ACECQuincy

ACECRoslin

ACECSherwood

ACECWautoma

ACEC WildRose Pump

ACEC Wildrose

ACECCambria

CWECDewey

RosholtCWEC

Lincoln Ave(UPPCO)

ACECBrooks

ACECLewiston

ACECRichford

ACECSpringLake

ACECWinnebago

Platt

ColumbusSouth

HarrisonNorth 138kV

Metonga

Maine

ACECCalamus

RichlandCenter

Pardeeville

SummitLake(WPS)

LodiIndustrial

ParkLodi

ACECCottonville

Hilltop(WPS)

Goodman

GrandMarsh

DPC NewLisbon

Clintonville

T Corners

DPCBuckhorn

Sunnyvale

Neevin

ButlerRidge

Aspen

Highway 22

Finnegan

TowerSubstation

Hubbard

Wyocena

Plainfield(ALTE)

NorthMadison345/138 kV

Groenier

Hartman Creek

Hollywood

Juneau Northside

JuneauIndustrial

WillowLawn

Hickory St

WisconsinRapids

Hustisford

Koch Oil

ConsulatedWater Power(rrn)

CardinalGlassTomah

Endeavor

HoughtonRock

BadgerWest

LakeheadIron River

MillCreek

Staff

Woodmin

Timberwolf

MiddleVlg

Sheridan(ALTE)

FountainPrairie

WaupunWestside

CedarCreek

Brewer

EagleRiver

WaupunPrison

Richfield

VulcanChem

Berlin

NorthBeaverDam

Dam Heights

ColumbiaSW YD(ALTE)

Fox Hills

Forest

Waupun

NorthFond

Du Lac

SouthBeaver

Dam

NorthMadisonDane

Pine River(ALTE)

Polar

Reedsburg

NorthwestRipon

Oakfield

Zobel

Horicon

FoxRiver

DellCreek

Center St

Birnamwood

Seneca

Waupaca

Plover

ClearLake(WPS)

ACECPlainfield

IronGrove

Antigo

Arlington

GrandfatherFalls Hydro

Prairie Du Sac Plant

WisconsinDellsMuni 1

StoneLake

JuneauDowntown

CWECWittenberg

Butte DesMorts

Didion

LakeheadVesper

Florence

Rosholt

Pine Hy

Rio PumpingStation

Hartford

Marion

Northside

WhitingAve

ACECDoylestown

GardnerPark

SkilletCreek

RhinelanderPaper

DeerTrail

DPC BellCenter

TwinLake

Coyne St

SkanawanSW STR

Wildwood(MEWD)

Big Pond

OmroIndustrialPark

ACECFriesland

Roeder

Portage

Fox Lake(ALTE)

Pine(WPS)

ACECHancock

CedarRidge WindGeneration

Sanborn

Cloverleaf

Council Creek

Lakota Rd

MackfordPrairie

Cambria

ForwardEnergyCenter

HighwayEight

CWECTigerton

Hume

Sauk City Phillips St

Tayco

Saratoga

Caroline

Deforest

UnionCenter

Harrison69kV

NinthStreet

Caledonia(ALTE)

MapleStreet

Cassel

AmherstJct

Baker St

Warrens

Land OLakes

Ellington

RiverRun

Aviation

CastleRock

Okray

Waupun Main

Fairwater

Meadows

CWECIola

StoneLake

(Xcel)

ReedsburgNishan

Westfield

Coloma

LakeheadPortage

Alto

BeaverDam East

MosineePaperMillKronen

Zone 1

to Madisonarea

to La Crossearea

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MONTELLO

ADAMS

GREENLAKE

MARQUETTE

PORTAGE WAUPACA

WAUSHARA

WOOD

Wautoma

SandLake

ChaffeeCreek

GreenLakeSW STA

Mckenna

WildRose

RedGranite

LincolnPump STA

Markesan

FountainValley

ACEC Turtle Lake

Hancock

SilverLake(ALTE)

GoldenSands

ACECArrowhead

ACECChateau

ACECColoma

ACECFriendship

ACECGlen

ACECGrant

ACECSherwood

ACECWautoma

ACEC WildRose Pump

ACECWildrose

ACECBrooks

ACECRichford

ACECSpringLake

ACECWinnebago

ACECCottonville

GrandMarsh

Plainfield(ALTE)

Hartman Creek

HoughtonRock

Waupaca

ACEC Plainfield

Roeder

ACECHancock

CBPCDover

Saratoga

Harrison69kV

Baker St

Westfield

Coloma

Wautoma AreaNORTh CENTRAl WISCONSIN

Zone 1ONEIDA

LINCOLN

MARATHON

WAUPACA

SHAWANO

WOOD

JUNEAU

ADAMS

PORTAGE

WAUSHARA

MARQUETTE GREENLAKE

LANGLADE


Lines of proposed projects on the map are for illustrative purposes only and do not reflect actual routes. For information on project status and routes, see atc‑projects.com.

4

3

2

1

PROjECT DESCRIPTION IN‑SERVICE yEAR NEED DRIVER

Planned ProjectsFairwater‑Mackford 2017 Network service, condition, Prairie 69‑kV line construction overloads and low voltages

Proposed ProjectsM13 Reinforcement Bunker Hill‑Blackbrook 2019 Overloads and condition

Provisional ProjectsNone

Asset Renewal ProjectsMontello‑Wautoma 69‑kV line rebuild 2016 Condition and performance

Plover‑Whiting 115‑kV line rebuild 2019 Condition and performance

Additional projects may be found in the full 10-Year Assessment at atc10yearplan.com.

1

2

3

4

TRANSMISSION PROjECTS IN ZONE 1The 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.

System Solutions Key

New substationSupports transmission system expansion

Substation modi�cationsUpgrades equipment ratings to avert facility overloads

TransformerSupports local growth and improves voltage levels

Capacitor bank or reactorRelieves low voltages or high voltages

T-D interconnectionSupports local growth

69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

SUBSTATION KEY

SUBSTATION KEY TRANSMISSION LINE KEY

TRANSMISSION LINE KEY

EXISTING TRANSMISSION LINES KEY




Capacitor bankRelieves low voltages or high voltages



345-kV transmission line

115-, 138- or 161-kV transmission line


Rebuilt 115- or 138-kV transmission line

Rebuilt 69-kV transmission line

115- or 138-kV transmission line rating upgrade

69-kV transmission line rating upgrade








needed to address pending generation retirements such as White Pine. The scope for a project to address White Pine retirements is under review. It might include conversion of the 69‑kV facilities between the Conover Substation in northern Wisconsin and the Winona Substation in Michigan to 138‑kV operation.


Small increases expected in population, employmentPopulation in Zone 2 is projected to grow about 0.3 percent annually between now and 2024, and employment is expected to grow about 0.9 percent each year in the same time period. Marquette County, Mich. is projected to realize the largest increase

in both employment and growth rate.

Electricity usage Zone 2 typically experiences peak electric demand during the winter months. Ore mining and paper mills are the largest electricity users in the zone.

Electric load is forecasted to increase by 0.3 percent annually through 2025. Also, locally generated electricity is declining in the area with smaller, coal‑fired generators most at risk. This includes generation owned by industry, municipalities and utilities.


n Morgan‑Plains and Plains‑Dead River 345‑kV lines,

n Plains‑Stiles 138‑kV double‑circuit line,n Lakota Road‑Plains 138‑kV line andn 138‑kV facilities tying the Upper

Peninsula of Michigan to Lower Michigan.

Transmission system limitations in Zone 2There are a number of transmission system performance issues in Zone 2 including limited ability to import or export power, generator instability, overloaded lines and equipment, low system voltages and chronic limitations to transmission service. Primary drivers of these issues include a mismatch of load to generation in the Upper Peninsula and aging facilities in poor condition. In addition, other ongoing studies, including Northern Area Studies performed by ATC and MISO, have identified several voltage and thermal limitations. The most severe limitations occur during both peak and off‑peak periods.

While not specifically identified in the project list for this assessment, ATC’s capital forecast anticipates reinforcements

MIChIgAN’S UPPER PENINSUlA ANd NORThERN WISCONSIN

Zone 2


Counties included in Zone 2 – Michigan’s

Upper Peninsula and Northern Wisconsin

Alger, Mich.

Baraga, Mich.

Chippewa, Mich.

Delta, Mich.

Dickinson, Mich.

Florence, Wis.

Forest, Wis. (northern portion)

Gogebic, Mich. (eastern portion)

Houghton, Mich.

Iron, Mich.

Keweenaw, Mich.

Luce, Mich.

Mackinac, Mich.

Marinette, Wis. (northern portion)

Marquette, Mich.

Menominee, Mich. (northern portion)

Ontonagon, Mich. (eastern portion)

Schoolcraft, Mich.

Vilas, Wis. (northern portion)

Zone 2

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Atlantic

PresqueIsle SW YD

Amberg

Plains

BlaneyParkSW STA

BruceCrossing

ShingletonTimber

Products

Watson

Hulbert

Raco

Rexton

BluffView

Pickford

Brown

Door

Florence

Forest

Kewaunee

Langlade

Lincoln

Marathon

Marinette

Menominee

Oconto

Oneida

Portage

Shawano

Vilas

Waupaca

Alcona

Alpena

Antrim

Benzie

Charlevoix

Cheboygan

Crawford

Emmet

GrandTraverse

Iosco

Kalkaska

Leelanau

Montmorency

Ogemaw

Oscoda

Otsego

PresqueIsle

AlgerBaraga

Chippewa

DeltaDickinson

Gogebic

Houghton

Iron

Keweenaw

Luce

Mackinac

Marquette

Menominee

Ontonagon

Schoolcraft

Cook

WestShawano

PortageSt Hy

Tomahawk -ATC 115kV

Lou Pac

Holmes

Rockview

Mich LimestoneLoading Dock

MichLimestone

Quarry

Grandfather Falls

Powers

Arnold

Watersmeet

EmpireMine

StilesSW STA

NewberryVlg

MichigammeFalls Hy

BruleSW STA

ChalkHill Hy

WhiteRapids Hy

Mass

Nordic

Cornell-UP

Conover

Badger

Perkins

WhitcombWhiteClay

Falls

National

Harris

Tilden

CrystalFalls

Wittenberg

SagolaStrawberry Hill

Randville

BrooksCorners

BellePlaine

EastShawano

CranberryChandler

Venus

Hodag

St Germain

ThreeLakes

Sobieski

Pioneer (WPS)

Mountain

Oconto

Bay DeNoc

GrandRapids Hy

Pound

Caldron Falls Hy

Crivitz

Fox HillsSW STA

Ogden St

Sandstone Rapids Hy

SilverCliff

KellyMorrison

Ave

Sherman St

WestonSW YD

Eastom

BunkerHill

SW STAAurora St

BlackbrookSW STA

Rosiere

Algoma

Brusbay

SisterBay

Dyckesville

Suamico

Victoria HyWhitePine Vlg

Seney(UPPCO)

UPSCO

Rockland(UPP)

MTU

Keweenaw

LakeMine

Henry St.(UPPCO)

K ISawyer

FirstAve

ForestLake

Gladstone

Gwinn

Elevation St

Alger

CWECDewey

EscanabaSteamPlant

Algoma CityRosholtCWEC

Lincoln Ave(UPPCO)

Redwood

SawyerLumber

BassLake

NorthLake

LakeheadGouldCity

Metonga

Hiawatha (ESE)

Maine

LakeheadNaubinway

Evergreen

PineRiver

SummitLake(WPS)

TalentinoSW STA

Hilltop(WPS)

Goodman

IndianLake

Industrial

Chatham

HumboldtMine

BaragaVlg

Michigan St

Clintonville

Winona

Manistique

9 Mile SW STA

MeadPump

Nathan

Sunnyvale

NewberryTone

Aspen

TroutLake (CEC)

Highway 22

Brevort Detour

Dafter

Rudyard

GouldCity SW

STA

Groenier

Hiawatha(AD-REA)

Kincheloe SWSTA

JH Warden

WayPlant

MichTransmitter

Facility

Greenstone

KincheloeMain

Mead Paper

Lakehead Rapid River

LakeheadIron River

MackinacConverter

Woodmin

MiddleVlg

Toivola

Sault

CedarCreek

LittleSuamico

Twin FallsSW STA

Sherwood

EggHarbor

NorthBluff

Donken

Eckerman

EagleRiver

WhitePineMine

Magazine

FelchMountain Garden

Corners

PerchLake

Polar

Birnamwood

ClearLake(WPS)

Osceola

Delta (UPPCO)

Forsyth

IronGrove

Antigo

Brimley

Masonville(UPPCO)

GrandfatherFalls Hydro

PineGrove

Aragon

Lena

Curtis

Goetzville

Freeman

CWECWittenberg

Barnum

Munising

Florence

Rosholt

Pine Hy

Marion

30th Ave

St Ignace

GardnerPark

NewberryCorrectional Facility

Engadine

KincheloeHousing

RhinelanderPaper

Ingalls

DeerTrail

TwinLake

SkanawanSW STR

Valley(ESE)

Pine(WPS)

Cloverleaf

Old Mead Road

WestSide

Lakota Rd

HighwayEight

CWECTigerton

M-38

3 Mile

Caroline

Dunn Rd

Seney(AD-REA)

Cassel

Grede Foundries

L'anse

Land OLakes

Menominee

Bayshore

GlenJenks

PeavyFalls Hy

Ontonagon

Limeston

Roberts SW STA

Peshtigo

Algoma South

MosineePaper MillKronen

L a k e S u p e r i o r

L a k e Mi c h i g a n

4

5

3

2

1

6

8

7


MIChIgAN’S UPPER PENINSUlA ANd NORThERN WISCONSIN

Zone 2

TRANSMISSION PROjECTS IN ZONE 2The most notable planned, proposed and provisional network projects and asset renewal projects in Zone 2, along with their projected year of completion and the factors driving the need for the projects, are listed on page 19.







69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

SUBSTATION KEY




















Transmission line voltage conversion






Planned ProjectsBay Lake: Holmes‑Old Mead Road 138‑kV project 2016 Overloads and low voltages

Bay Lake: Benson Lake 138‑kV Substation – 2019 Overloads and low voltages Installation of SVC

Proposed ProjectsNone

Provisional ProjectsPlains‑National 138‑kV project 2020 Overloads and low voltages

Plains 345/138‑kV project 2020 Overloads and low voltages

Plains‑Arnold 138‑kV uprate 2020 Overloads and low voltages

Winona‑Atlantic 69‑kV line rebuild 2022 Overloads and low voltages

Asset Renewal ProjectsPine River‑Hiawatha 69‑kV line partial rebuild 2018 Condition and performanceMunising‑Gwinn 69‑kV line partial rebuild 2018 Condition and performance


3

4

5

7

6

8


1

2


n Columbia‑North Madison 345‑kV lines,

n Columbia‑Rockdale 345‑kV line,n Paddock‑Rockdale 345‑kV line,n Paddock‑Wempletown 345‑kV line,n Rockdale‑Wempletown 345‑kV line, n Rockdale‑Cardinal 345‑kV line andn 138‑kV facilities from the Nelson

Dewey Power Plant, around the Madison area, and in the northwest and southeast portions of Zone 3.

Transmission system limitations in Zone 3In our analysis of Zone 3, we identified low voltages, high voltages and 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 emerging concerns. The causes of these emerging issues include steady growth in certain areas, power plant retirements and different generation dispatch scenarios.


Increases expected in population, employment Population in Zone 3 is projected to grow about 0.9 percent annually between now and 2024, and employment is projected to grow about 1.4 percent each year for the same time period. Dane County is projected to realize the largest increase in population and employment.

Electricity usageElectric load is forecasted to grow approximately 1.0 percent annually through 2025.

SOUTh CENTRAl/SOUThWEST WISCONSIN ANd NORTh CENTRAl IllINOIS

Zone 3


Counties included in Zone 3 –

South Central/Southwest Wisconsin

and North Central Illinois

Columbia

Crawford(southern portion)

Dane

Dodge

Grant

Green

Iowa

Lafayette

Jefferson

Richland

Rock

Sauk

Walworth

Winnebago, Ill. (northern portion)

SOUTh CENTRAl/SOUThWEST WISCONSIN ANd NORTh CENTRAl IllINOIS

Zone 3








69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

SUBSTATION KEY
























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Birchwood

SpringGreen

Boscobel

Bloomington

University(WE)

WilliamsBay

BRICKCHURCH

Clinton(ALTE)

Scot Forge 2

ScotForge 1

Adams

Calumet

Columbia

CrawfordDane

Dodge

FondDu Lac

Grant

Green

GreenLake

Iowa Jefferson

Juneau

Kenosha

La Crosse

Lafayette

Marquette

Monroe

Racine

Richland

Rock

Sauk

Vernon

Walworth

Washington

Waukesha

Waushara

Winnebago

WalnutGIS

WallyRoad

Mercury Marine

Wautoma

ChaffeeCreek

Sussex

SugarCreek

TamarackConcordSW YD

Rubicon

BarkRiver

Boxelder

Butternut

St Lawrence

Auburn

Tripp RdRockRiver

McCue

Sunrise

Turtle

BrodheadSW STA

Petenwell

Jefferson

RockBranch

GreenLakeSW STA

SouthMonroe

NorthMonroe

NelsonDeweySW YD Hillman

South FondDu Lac SW YD

Ohmstead

Metomen

Mayville

SpringBrook

Stage Coach SW STA

Stoughton

Rockdale

Kegonsa

GranGrae

Academy

NorthRandolphTrienda

Barton

MountHoreb

Hilltop(ALTE)

CrawfishRiver

Burlington

Mckenna

WyomingValley

Zenda

Viking

Venture

Wiota

Wauzeka

WestMauston

Wonewoc

Tichigan

Tomah Industrial Pk

Troy

RockSprings

RiponInd Park

SadoffCo

StonyBrook

SpringGrove

Shullsburg

Pioneer(ALTE)

PleasantValley

Potosi

PortageInd

Park

Poynette

Randolph

RedGranite

Rewey

Richland

Ripon

Rosendale

NewHollandale

NorthTomah

Okee

Omro

Merrimac

Mcgregor(ALTE)

MineralPoint

Maple(WE)

Moore St

Necedah

LakeGeneva

Lancaster

London

LakeheadCambridge

Loch Mirror

LakeheadWaterloo

LaMar

Loganville

LincolnPumpSTA

LyndonStation Markesan

ManleySand

Mauston

Mazomanie

McFarland

Hillsboro

HoriconInd

Park

IdleHour

IslandKirkwood

Elmo

East Scott St

FallRiver

Footville

Forward

Friendship

FortAtkinson

GaysMills

Gaston Rd

Hamilton St

CottageGrove

Columbus(ALTE)

DanaCorp

Delavan

Blanchardville

BlackEarth

Brandon

Brisbois

Browntown

Brodhead

Blacksmith

Brooklyn

CampDouglas

Beaver Dam 3rd St

Albany(ALTE)

Arena

Baraboo

Belmont

Benton

Burke

Hampden

ACECTurtleLake

REC Shaw

AirLiquide

Ledgeview

Artesian

DPC LyndonStation

DPC PrairieDu Chien

Monticello(ALTE)

Lake Delton

Dartford

DorsetCorners

Sharon

ShirlandAve

SilverLake(ALTE)

Ellinwood

Bowen St

OshkoshPearl Ave

Progress

SunsetPoint Gravesville

NewHolsteinSW STA

Syene

American

ACECChateau

ACECColoma

ACECFriendship

ACECGlen

ACECQuincy

ACECRoslin

ACECCambria

RECBradford

Stoughton East

RECNewark

RECOrfordville

ACECBrooks

ACECLewiston

ACECRichford

ACECSpringLake

ACECWinnebago

Platt

ColumbusSouth

Edgewood

Cuba CitySouth

Martin Rd

Wingra

WaunakeeSW STA

Blount

Christiana

NineSprings

PheasantBranch

ACECCalamus

Westport

Sprecher

Rienzi Road

RichlandCenter

NorthwestBeloit

Pardeeville

Pflaum

UnionTownline

NewGlarus

LodiIndustrial

ParkLodi

Femrite

GlenHaven

Vienna

GrandMarsh

DPC NewLisbon

DPCBuckhorn

WickDrive

BOCGasses

Tokay

ButlerRidge

RECLaPrairie

StoughtonSouth

Wilcox

Finnegan

Mill Rd

TowerSubstation

SouthwestDelavan

Russell

Hubbard

Wyocena

Miners

NorthMadison345/138 kV

JuneauNorthside

BluffCreek

JuneauIndustrial

WillowLawn

Hickory St

Colt Industries

MazomanieIndustrial

AGA Gas

Hustisford

Koch Oil

Cross Plains

BadgerPump STA

ColumbusMuni 1

Muscoda

CardinalGlassTomah

NorthStoughton

South

Endeavor

HoughtonRock

RichmondRoad

MuscodaIndustrialSub

Staff

Timberwolf

REC RedHawk

Vinburn

FountainPrairie

Highway 151

WaupunWestside

Hillside

Cooney

Meyer Rd

Brewer

WaunakeeIndustrial Park

DPCGratiot

WaupunPrison

JenningsRd SW STA

Darlington

DodgevilleEden

Berlin

NorthBeaverDam

Bristol(ALTE)

DamHeights

Paddock

Columbia SWYD (ALTE)

FoxHills

Forest

Cardinal

BassCreek

Sheepskin

Waupun

NorthFond

Du Lac

Elkhorn

SouthBeaver

Dam

Reiner Rd

NorthMadison

Blackhawk SW YD (ALTE)

CrossCountry

Dane

Waukesha

Janesville GeneralSW YD

Cottonwood(WE)

Timberlane

TokenCreek

Traxler

Twin Lakes (ALTE)

SaundersCreek

Pine River(ALTE)

Reedsburg

NorthwestRipon

Oakfield

Zobel

KettleMorraine(ALTE)

Horicon

Hooterville

FoxRiver

DellCreek

EastRockton

BlueRiver

Cambridge

Center St

Seneca

LancasterDistribution

Dickinson(ALTE)

FordDrive

NorthLake

Geneva

Arlington

Gateway

WalworthSouthLakeGeneva

Prairie DuSac Plant

Milton Lawns

Avoca

Cobblestone

Fitchburg

CentennialPark

DivisionStreet

Wisconsin Dells Muni 1

BrodheadCentral

Juneau Downtown

BrodheadSouth

ColladayPoint

La Pointe

LandsEnd

Didion

ArthurRoad

Oregon

Rio PumpingStation

Hartford

Macy St

ACECDoylestown

GlacierSkilletCreek

WestTowne

Verona

Katzenberg

DPC BellCenter

Belleville

Oak Ridge

Sun PrairieBusinessPark

Big Pond

Duplainville

OmroIndustrialPark

ACECFriesland

Roeder

Portage

Park Ave

Fox Lake(ALTE)

Kieler

RECCenter

RECClinton

Femrite 138/69 kV

DPCShullsburg


TyranenaWestMiddleton

Sanborn

DPCStoneman

MonroeCentral

SunValley

GermantownSW YD

Council Creek

WestDarien

OrfordvilleCubaCity

MackfordPrairie

Cambria

ForwardEnergyCenter

Whitewater

Summit

Sauk CityPhillips St

Cassville

EvansvilleMuni

Deforest

UnionCenter

CypressSW YD

MerrillHills

NinthStreet

LoneRock

Caledonia(ALTE)

MapleStreet

EastTowne

REC Harmony

RiverRun

Aviation

CastleRock

Waupun Main

Fairwater

Tecumseh Rd

ReedsburgNishan

Huiskamp

BrodheadNorth

Westfield

Colorado

RECFulton

Coloma

Mendota

LakeheadDelavan

LakeheadPortage

Alto

BeaverDam East

Zone 3

to Dubuque County area

to La Crosse area

I L L I N O I S

TRANSMISSION PROjECTS IN ZONE 3The most notable planned, proposed and provisional network projects and asset renewal projects in Zone 3, along with their projected year of completion and the factors driving the need for the projects, are listed on page 23.

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7


Planned ProjectsColley Road‑Brick Church 69‑kV line 2018 Overloads, low voltages and conditionBadger Coulee: La Crosse area‑North Madison‑ 2018 Reliability, economics and public policy Cardinal 345‑kV line construction

Spring Valley‑North Lake Geneva 138‑kV line 2019 Overloads and low voltages, provide network service

Proposed ProjectsCardinal‑Hickory Creek 2020 Reliability, economics and public policy

Provisional ProjectsCardinal‑Blount 138‑kV line construction 2029 Overloads and low voltages

Asset Renewal ProjectsDam Heights‑Dane 69‑kV line re‑route at dam 2015 Condition and performance

Concord‑Rubicon 138‑kV line rebuild (portion 2016 Condition and performance of Quad County Electric Reliability Project)

Dam Heights‑Portage 69‑kV line rebuild 2017 Condition and performance

Boscobel‑Lone Rock 69‑kV line rebuild 2019 Condition and performance


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9



Increases expected in population, employmentPopulation in Zone 4 is projected to grow 0.7 percent annually between now and 2024. Brown County is expected to realize the largest increase in population. Employment is projected to grow 1.1 percent annually in the same time period, with the largest increase projected in Brown County.

Electricity usage Peak electric demand typically occurs during the summer months, although the northern portion of Zone 4 typically experiences nearly equal summer and winter peaks. Paper mills and foundries in the Green Bay and Appleton metropolitan areas are some of the largest electricity users in the zone.

Electric load is forecasted to grow at approximately 0.5 percent annually through 2025. Also, locally generated electricity is declining in the area with smaller, coal‑fired generators most at risk. This includes generation owned by industries, municipalities and utilities.

ATC delivers power in Zone 4 with various transmission facilities including:

n Four 345‑kV lines extending from the Point Beach Nuclear Plant,

n Two 345‑kV lines extending from the Edgewater Power Plant,

n Four 345‑kV lines connecting the Gardner Park, Werner West, Morgan, and Plains Substations,

n Two 345‑kV lines from North Appleton to Werner West and Fitzgerald,

n Three 345‑kV lines connecting South Fond du Lac Substation to the Columbia, Edgewater and Fitzgerald Substations and

n A 138‑kV network in the Fox River Valley/Green Bay area.

Transmission system limitations in Zone 4In our analysis of Zone 4, we continue to monitor potential high voltages in the Outagamie and Calumet counties and impending low voltages in Brown County. In addition, other ongoing studies have identified several voltage and thermal limitations. The most severe limitations occur during both peak and

off‑peak periods.

NORThEAST WISCONSIN

Zone 4


Counties included in Zone 4 –

Northeast Wisconsin

Brown

Calumet

Dodge (northeastern corner)

Door

Fond du Lac (eastern portion)

Kewaunee

Manitowoc

Marinette (southern portion)

Menominee, Mich. (southern portion)

Menominee, Wis.

Oconto

Outagamie

Shawano (eastern portion)

Sheboygan

Winnebago (eastern portion)

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Lyndon

SouthSheboyganFalls

Fitzgerald

WernerWest

NorthAppleton

CityLimits

Maes

ForestJunction

BrillionIron Works

Glory Rd

Highway V

PulliamSW YD

RedMaple

Beardsley St

CanalMorgan

WestMarinette SW YD

Thunder

BROWN

CALUMET

COLUMBIA

DODGE

DOOR

FONDDU LAC

FOREST

GREENLAKE

KEWAUNEE

LANGLADE

MANITOWOC

MARINETTE

MENOMINEEOCONTO

OUTAGAMIE

SHAWANO

SHEBOYGAN

WAUPACA

WAUSHARA

WINNEBAGO

OZAUKEEWASHINGTON

WestShawano

Holland

SheboyganFalls Energy

Center SW YD

Holmes

Winneconne

Iola

Woodenshoe

ElkhartLake

StilesSW STA

Butternut

ChalkHill Hy

WhiteRapids Hy

Casaloma

Badger

Auburn

WhiteClay

PortWashingtonSW YD

Lawn Rd

Falls

GreenLakeSW STA South Fond

Du Lac SW YD

Ohmstead

Metomen

Mayville

SpringBrook

NorthRandolph

WhiteLake(WE)

Barton

North Mullet River

Melissa

KaukaunaCentral

RiponInd Park

SadoffCo

Randolph

RedGranite

Ripon

Rosendale

Nicolet

NorthGate

Omro

LakePark

Manawa

Markesan

HoriconInd Park

East Scott St

FountainValley

Brandon

BrooksCorners

32nd St

Beaver Dam3rd St

AppleHills

BellePlaine

Ledgeview

CombinedLocks

CharterSteel

EastShawano

Dartford

MearsCorners

Ellinwood

12th Ave

Bowen St

OshkoshPearl Ave

Progress

SunsetPoint

Sobieski

Pioneer(WPS)

Mountain

Oconto

Bay DeNoc

GrandRapids Hy

Pound

CaldronFalls Hy

Crivitz

Fox HillsSW STA

Ogden St

SandstoneRapids Hy

SilverCliff

Mishicot

Aurora St

Rosiere

KewauneeSW YD

Barnett

Algoma

EastKrok

SawyerSW STA

Brusbay

SisterBay

NortheastRapids

Gravesville

New HolsteinSW STA

VelpAve

PrebleLiberty

St

Dyckesville

Howard

LostDauphin

MysteryHills

Suamico

FirstAve

FiberSW STA

Dewey

ACECCambria

AlgomaCity

Lakefront SW YD

Redwood

ACECSpringLake

Mirro

HarrisonNorth138kV

Metonga

Martin Rd

PlymouthSub 4

ACECCalamus

Rienzi Road

Industrial

Michigan St

Clintonville

HowardsGrove

Neevin

Highway 22

Columbus St

HubbardJuneauNorthside

Fox RiverSW YRD

Juneau Industrial

WillowLawn

Hickory St PlymouthMuncipal

Koch Oil

AdamsSt

Greenleaf

Staff

MiddleVlg

WaupunWestside

LittleSuamico

KaukaunaNorth

Meyer Rd

Sherwood

EggHarbor

Mason St

WaupunPrison

Berlin

NorthBeaverDam

ErdmanForest

Edgewater SW YD

Waupun

NorthFond

Du Lac

SouthBeaver

Dam

MulletRiver

7th St

Sauk Trail

Polar

Riverside(ALTE)

NorthwestRipon

Oakfield


Horicon

FoxRiver

Center St

Waupaca

FordDrive

Fredonia

Kohler

Lena

St Nazianz

PlymouthSub 3

Juneau Downtown

CWECWittenberg

Butte Des Morts

WellsSt

Didion

Bemis

Marion

Macy St

Northside

30th Ave

Revere Dr

ACECDoylestown

Glacier

Ingalls

DeerTrail

Shoto

OmroIndustrialPark

ACECFriesland

Roeder

Huebner

Fox Lake(ALTE)

Maplewood


Cloverleaf

BayportSW STA

MackfordPrairie

Cambria

ForwardEnergyCenter

CWECTigerton

Tayco

Caroline

Dunn Rd

University(WPS)

CypressSW YD

Harrison69kV

HighFalls Hy

Ellington

RiverRun

Aviation

Menominee

Bayshore

Booster

Luxemburg

Waupun Main

Fairwater

Meadows

Kellnersville

Tecumseh Rd

DanzAve SWSTA

CWECIola

Peshtigo

Alto

BeaverDam East

AlgomaSouth

Zone 4

L a k e Mi c

h i ga n

NORThEAST WISCONSIN

Zone 4


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Glory Rd

Highway V

PulliamSW YD

BROWN

Velp Ave

Preble

Oak St

Liberty St

James St

De Pere

AshlandAve Bluestone

Finger RdSW STA

Henry St(WPS)

Howard

MysteryHills

South Broadway

Tower Dr

VanBuren St

Mason St

7th St

PottsAvenue

Nicolet Paper Co

EastmanAve

BayportSW STA

DanzAve SW

STA

Green Bay Area



Planned ProjectsPulliam‑Glory Road 138‑kV line conversion 2016 Overloads and low voltages

Iron Foundry 138/69‑kV Substation construction 2016 T‑D interconnection and Glenview‑Iron Foundry 69‑kV line extension 2016 Overloads and low voltages

Bay Lake: North Appleton‑Morgan 345‑kV 2019 and 138‑kV line construction

Creekview Substation: 138‑kV line construction 2017 T‑D interconnection 2017 to serve T‑D interconnection

Branch River 345‑kV Substation construction 2018 Accommodate new generation

Proposed ProjectsOgden St.‑Bayshore 69‑kV line construction 2018 Provide network service

Provisional ProjectsMorgan‑Thunder 138‑kV project 2020 Overloads and low voltages

Morgan‑Plains 345‑kV loop into new 2020 Overloads and low voltages Thunder 345‑kV Substation

Shoto‑Custer 138‑kV line 2022 Overloads and low voltages

Aviation‑North Fond du Lac 138‑kV line rebuild 2025 Overloads

Asset Renewal Projects

Dyckesville‑Sawyer 69‑kV line rebuild 2016 Condition and performance

North Appleton‑Butte des Morts 138‑kV rebuild 2017 Condition and performance

Finger Road‑Canal 69‑kV line rebuild 2019 Condition and performance


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9

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69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

SUBSTATION KEY













Transmission line voltage conversion












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12

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Increases expected in population, employment Population in Zone 5 is projected to grow 0.5 percent annually between now and 2024, 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 employment.

Electricity usage Peak electric demand typically occurs during the summer months. Large industrial loads in the Milwaukee metropolitan area, including Charter Steel and Miller Brewing, are among the largest electricity users in the zone.

Electric load is forecasted to grow approximately 0.7 percent annually through 2025.


n The southern portion of 345‑kV lines from Point Beach and Edgewater,

n The Saukville, Arcadian, Granville, Oak Creek, and Racine 345/138‑kV substations,

n The transmission lines emanating from the Pleasant Prairie and Oak Creek power plants,

n 230‑kV facilities near Milwaukee andn A significant 138‑kV network in the

Milwaukee area, a portion of which is underground.

Transmission system limitations in Zone 5Transmission system performance issues in Zone 5 are generally related to heavy market flows to and from the south, resulting in high 345‑kV and 138‑kV line loadings and the need to monitor potential multiple contingency conditions.

SOUThEAST WISCONSIN

Zone 5


Counties included in Zone 5 – Southeast

Wisconsin

Kenosha

Milwaukee

Ozaukee

Racine

Washington

Waukesha

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Mukwonago

Somers

Branch

Granville

Arcadian

Saukville

Cedarsauk

I L L I N O I S

Dodge

Fond DuLac

Jefferson

Kenosha

Milwaukee

Ozaukee

Racine

Rock

Sheboygan

Walworth

Washington

Waukesha

Holland

MercuryMarine

RusselTerm

Sussex

SugarCreek

Shorewood

Tamarack

PleasantPrairie

SW YD

Lakeview

Bain

ConcordSW YD

Rubicon

Paris

BarkRiver

Butternut

St Lawrence

Auburn

PortWashingtonSW YD

South FondDu LacSW YD

Mayville

SpringBrook

Racine

Barton

Bluemound

Tosa

NorwichKansas

North MulletRiver

Pennsylvania

Parkland

Lincoln

Harbor(WE)

Cornell - Milwaukee

Center

28th St

Dewey(WE)

Fiebrantz

96th St O Connor

Mequon

Albers

CrawfishRiver

Glendale

RangeLine SW

St Martins

RootRiver

Ramsey

Burlington

Zenda

WestJunction

SpringValley(WE)

Tichigan

PleasantValley

Nicolet

Maple(WE)

LakeGeneva

HoriconInd Park

Delavan

Brandon

Beaver Dam3rd St

Brookdale

AirLiquide

CharterSteel

RangeLineDist

Sharon

Morris St

RECBradford

51st St Term

Northside (sfm) (ALTE)

SidneyTerm

43rd StTerm

Edgewood

Martin Rd

Moorland

Elm Road345 Sws Yd

ButlerRidge

Mill Rd

SouthwestDelavan

Hubbard

Oak Creek(COMS 230kV)SW YD

JuneauNorthside

BluffCreek

JuneauIndustrial

WillowLawn

PlymouthMuncipal

Hustisford

Koch Oil

Adams St

RichmondRoad

ZionEnergyCenter

Plainfield(WE)

WaupunWestside

OakCreek

SW YD

Cooney

WaupunPrison

NorthBeaver Dam

Bristol(ALTE)

CedarburgSouth

Lodestar

EdgewaterSW YD

Waupun

Elkhorn

Waukesha

MulletRiver

Cottonwood(WE)

Swan

Twin Lakes (ALTE)

Riverside(ALTE)

Oakfield

Nicholson(WE)


HoriconCenter St

Washington St (ATLE)

NorthLake

Geneva

Kenosha

Fredonia

HaymarketSquare

Kohler

HumboltTerm

Walworth

SheboyganFalls

SouthLakeGeneva

Butler

Cobblestone

RiverBend

Juneau Downtown

Hayes

Allerton

ArthurRoad

Bemis

Walker

Hartford

Glacier

Barland

68th St

Katzenberg

Duplainville

Huebner


Montana

Raymond

Douglas

GermantownSW YD

ParkHill

WestDarien

ForwardEnergyCenter

Norwich Terminal

Whitewater

Summit

MerrillHills

Greves

Waupun Main

Everett

LakeheadDelavan

Alto

BeaverDam East

St Rita

Zone 5

La

ke

Mi c

hi g

an

SOUThEAST WISCONSIN

Zone 5



Planned ProjectsSpring Valley‑North Lake Geneva line 2019 Overloads and low voltages, 138‑kV construction provide network service

Proposed ProjectsSoutheast Wisconsin‑ 2020 Overloads Northeastern Illinois Interface Project

Provisional ProjectsNone

Asset Renewal ProjectsWaukesha‑Merrill Hills 138‑kV line 2015 Condition and performance partial rebuild (portion of Quad County Electric Reliability Project)

Mukwonago‑Edgewood‑St. Martins 2018 Condition and performance 138‑kV line rebuild



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69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

69 kV

115 kV

138 kV

161 kV

230 kV

345 kV

SUBSTATION KEY

























4

3

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1 Lines of proposed projects on the map are for illustrative purposes only and do not reflect actual routes. For information on project status and routes, see atc‑projects.com.

ATC AT A GLANCEn formed in 2001 as the first multi‑state, transmission‑only utility

n owner and operator of more than 9,530 miles of transmission lines and 530 substations

n meeting electric needs of more than five million people in 72 counties in four states: wisconsin, michigan, minnesota and illinois

n $3.8 billion in total assets

CONTACT Mail P.o. Box 47 n waukesha, wi 53187‑0047

Toll‑free 866‑899‑3204

Email [email protected]

more detailed information is available at atc10yearplan.com

P.O. Box 47Waukesha, WI 53187‑0047

helping to keep the lights on, businesses running and communities strong®

atcllc.com

Would you like a speaker from ATC to address your group? Give us a call, toll‑free, at 866‑899‑3204, ext. 6922.

2015 - atc 10 year assessment · this report contains a summary of atc’s planning initiatives, as...

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