10‑year transmission system assessment€¦ · atc, itc midwest llc and dairyland power...

2018SUMMARY REPORT

10‑Year Transmission System Assessment

Agility, flexibility needed to plan for changing energy marketplace

In today’s marketplace, our customers expect us to respond quickly. In fall 2017, Foxconn selected Wisconsin for its first U.S.‑based manufacturing facility for flat‑screen technology. The Mount Pleasant Tech Interconnection Project was developed to respond to the needs of a facility that would constitute the largest load at a single substation in ATC’s service territory. We filed an application in January to build a new substation and associated transmission lines with the Public Service Commission of Wisconsin, which approved the project in July. Construction will start this fall and the project will be in service in late 2019.

Long‑term transmission planning has always been a complex undertaking, but it was relatively consistent in the days of steady load growth and a stable generation mix. But conditions in the early 21st century are no longer as predictable as they were in the past, adding new challenges to the process.

As a transmission‑only electric utility, we collaborate with our customers to determine needed replacements, expansions and connections to the grid. Recent changes in generation and the energy marketplace have required us to be flexible and agile in our planning to accommodate customer needs.

2 AMERICAN TRANSMISSION CO.

Transmission investments Projections from past and current Transmission System Assessments

2014 2015 2016 2017 2018

Specific Network Projects

$1.4B $1.4B $1.3B $0.7B / $1.0B* $0.5B

Regional Multi‑Value Projects

$0.5B $0.5B $0.5B $0.4B $0.3B

Asset Maintenance $1.2B $1.4B $1.4B $1.4B $1.5B

Other Capital Categories $0.2B / $0.8B $0.4B / $1.2B $0.4B / $1.2B $0.3B / $0.8B $0.5B / $1.1B

Total 10‑Year Capital Cost $3.3B / $3.9B $3.7B / $4.5B $3.6B / $4.4B $2.8B / $3.6B $2.8B / $3.4B

* The Specific Network Projects range in 2017 reflects the fact that Northern Area Reliability Assessment projects in the 10‑Year Assessment project list and in the MISO Transmission Expansion Plan database may be replaced by generation being considered in the Midcontinent Independent System Operator generation queue.

Ron SneadVice President, System Planning

Jim Vespalec Director, Asset Planning & Engineering

Kingsford

De Pere

PewaukeeHeadquarters

Madison

ATC O�ces

Minnesota

Illinois

Wisconsin

Michigan

CottageGrove

Agility, flexibility needed to plan for changing energy marketplace

Upper Michigan Energy Resources Corp., a subsidiary of WEC Energy Group, proposed in early 2017 to add 180 megawatts of generation at two sites in the Upper Peninsula. The project was approved later that year, and construction began immediately. This allowed us to scale back projects identified in our Northern Area Reliability Assessment. UMERC’s two plants are located near existing transmission infrastructure and will require two new substations and only a short segment of transmission line to connect the facilities.

Generation retirements have a large impact on the transmission grid. We anticipate that more than 30 percent of the coal‑fired generation in our service territory will be retired by the end of 2019. With the retirement of the Kewaunee Nuclear Station in 2013, we canceled a pair of 50‑mile, 138‑ and 345‑kV lines that had been in the planning stages for several years – the change in generation allowed the need to be satisfied instead with a new substation that went into service this year. The announced closing of the Pleasant Prairie Power Plant in southeastern Wisconsin meant that another transmission connection into northern Illinois was no longer needed, and the Wisconsin‑Illinois Electric Reliability Project was canceled.

We also work with our customers to evaluate cost‑effective non‑transmission solutions when examining the condition of our aging assets. Recently, we made the decision to retire a 69‑kV line in northeastern Wisconsin that was in poor condition when we determined, with Wisconsin Public Service, that the local distribution company’s two substations served by the line could be tied into a nearby rebuilt 138‑kV line for about half the cost.

These examples demonstrate the dynamic nature of the electric industry today. That’s why it’s prudent to conduct an annual review of market conditions and transmission needs. Our 10‑year forecast calls for a slight decrease in capital expenditures from last year, with $2.8 to $3.4 billion in system improvements. This document contains a summary of ATC’s planning initiatives, and an overview of asset renewal and network‑driven projects in each of our planning zones.

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

32018 | 10-YEAR ASSESSMENT


Regional and economic planning

MARKET CONSTRAINTS

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.

OTHER MISO PLANNING ACTIV IT IES

Our planning staff participates in various technical and policy discussions and provides future direction for Midwest Transmission Expansion Plan activities. We also are involved in joint planning studies with neighboring regional transmission organizations, including PJM and SPP.

MISO and PJM coordinate, conduct and analyze several market efficiency project studies. This analysis is reviewed by an inter‑regional planning stakeholder advisory committee, which typically examines economic projects that could benefit both Regional Transmission Organizations and qualify for cross‑border cost‑sharing.

ATC is an active participant in a variety of efforts to address regional and inter‑regional planning initiatives

to maintain a reliable grid and capture economic benefits in a dynamic energy marketplace. Policy

initiatives to curb greenhouse gas emissions and expand the use of renewable energy continue to evolve,

and we work closely with our customers to plan for an electric transmission system that will serve their

needs well into the future.

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 Corporation compliance needs in a five‑ to 10‑year period.

ATC staff participates in the MISO 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.

BADGER COULEE

This fall, we expect to energize the 180‑mile, 345‑kV Badger Coulee transmission line, one of MISO’s 17 Multi‑Value Projects designed to deliver significant benefits to electric consumers throughout the Upper Midwest. A portion of the project from the Cardinal Substation to the North Madison Substation was placed in service in fall 2017. Developed jointly with Xcel Energy, the line will:

n offset the need for about $190 million in lower‑voltage upgrades in western Wisconsin,

n increase access to the wholesale energy market and provide between $118 million and $700 million in net economic benefits over the life of the line, and

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

BAY LAKE

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

The North Appleton‑Morgan project was placed in service in September 2018, ahead of schedule and under budget. It 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 have been expanded and additional work was required at 11 other substations. A new substation, Benson Lake in Marinette County, was placed into service in July 2017. It includes a large voltage‑control device. North Appleton‑Morgan was approved by the Public Service Commission of Wisconsin in May 2015, with an authorized cost of $328 million.

Major projects update

(continued on page 6)



CARDINAL – H ICKORY CREEK

ATC, ITC Midwest LLC and Dairyland Power Cooperative filed an application in April with the Public Service Commission of Wisconsin for a 102‑ to 120‑mile, 345‑kV transmission line connecting Dubuque County, Iowa, to Dane County, Wis.

The Cardinal‑Hickory Creek Project is another MISO Multi‑Value Project. Studies indicate that it will deliver benefits to local communities and the Midwest region by:

n improving electric system reliability locally and regionally,

n delivering $23.5 million to $350.1 million in net economic benefits, and

n connecting to other 345‑kV transmission lines in the Upper Midwest and helping to enable 25 gigawatts of cost‑effective renewable energy to be delivered to communities in the region.

If approved by Wisconsin and Iowa regulators, the project is estimated to be in service in 2023.

SPRING VALLEY – NORTH LAKE GENEVA

Construction is underway on the $71 million Spring Valley‑North Lake Geneva Project, which was approved by the Public Service Commission of Wisconsin in spring 2016. This project is 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 23 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‑kV and 69‑kV substation on an ATC‑owned parcel along Highway 50 in the Town of Wheatland,

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

n other power line modifications.

The project is expected to be placed into service in 2019.

Major projects update continued

The Mount

Pleasant Tech

Interconnection

Project will serve

up to 230 MW of

load, the largest

load connected to

a single substation

on our system.

(continued on page 8)

F INGER ROAD – CANAL

The rebuild of a 69‑kV line in northeastern Wisconsin, along with associated substation work, was approved by the Wisconsin Public Service Commission in spring 2017 at a cost of $60.7 million. About 55 miles of line on 1950s‑vintage wood poles between Finger Road Substation and Canal Substation will be rebuilt. The line serves seven distribution substations in northern Kewaunee County and Door County.

The project includes:

n the replacement of 834 wood pole structures,

n the replacement of line conductor and addition of a fiber optic shield wire,

n the update at terminal‑end substations of jumpers, selective bus conductor, and disconnect switches.

Construction is scheduled to complete in January 2021.

MOUNT PLEASANT TECH INTERCONNECTION

This project is designed to support Foxconn, which upon completion will be one of the largest manufacturing facilities in the nation with a campus build‑out anticipated to be approximately 22‑million square feet. The initial projected electric usage would be 200 megawatts at this manufacturing facility, with an additional 30 MW of expected economic growth in the surrounding area. The electric load required for Foxconn’s operations will be the largest connected to ATC’s transmission system at a single substation.

The project cost is estimated to be about $117 million and includes:

n constructing a new 345‑/138‑kV Mount Pleasant Substation,

n looping the Racine – Pleasant Prairie 345‑kV line into the new substation,

n stringing a new Racine – Pleasant Prairie 345‑kV circuit in the vacant position on existing structures and looping this new circuit into the new substation,

n reconfiguring the Racine Substation 345‑kV bus,

n rerouting the Pleasant Prairie and Bain 345‑kV line,

n uprating the Elm Road – Racine 345‑kV line, and

n constructing four new 138‑kV underground lines (~400 feet) from the Mount Pleasant Substation to serve a customer‑owned substation.

ATC submitted the CPCN application in late January 2018 to the Wisconsin Public Service Commission, which approved the project in July. Construction is underway. All electrical infrastructure has an expected in‑service date of late 2019.

MACKINAC – MCGULPIN 138‑kV SUBMARINE CABLE REPLACEMENT

ATC has plans to replace the two 4‑mile, 138‑kV submarine transmission lines connecting the Upper Peninsula of Michigan to lower Michigan at an estimated cost of $105 million.

The Mackinac – McGulpin 138‑kV submarine cable replacement project was submitted for MISO review in the MTEP18 planning cycle. The project was developed for the following reasons:

n Two 138‑kV submarine circuits were damaged by an anchor strike on April 1, 2018.

n Three working cables have been reconfigured to form one 138‑kV circuit.

n The project will restore the eastern UP to the level of reliability it had before the April 1 event.

n The integrity of the remaining cables is of concern.

n The remaining cables contain a mineral‑oil based dielectric fluid; a submarine cable failure could result in a fluid leak into Lake Michigan and Lake Huron.

As proposed, the project is estimated to be in service in 2021.


JUNEAUTOWN INTERCONNECTION

The Juneautown Interconnection Project is a 138‑kV distribution‑transmission interconnection needed to meet We Energies’ growing reliability and economic needs.

The cost of the project is estimated to be $34.1 million and includes:

n a new Juneautown 138 / 13.2‑kV gas‑insulated substation,

n looping the 138‑kV line between Haymarket and Harbor substations to feed the new substation, and

n routing the new line segments through new underground corridors.

An application for a Certificate of Authority was filed with the Public Service Commission of Wisconsin in January 2018 and was approved in August. Construction is scheduled to begin in fall 2019. The facilities are scheduled to be in service approximately 12 months after construction begins.

BAYPORT – P IONEER

The rebuild of a 69‑kV transmission line in northeastern Wisconsin, along with associated substation work, will be submitted to the Wisconsin Public Service Commission in spring 2019 at a cost of $51.7 million. Approximately 22 miles of line on 1910s‑vintage wood poles running between Bayport Substation and Pioneer Substation will be rebuilt. The line will serve three distribution substations in Brown County and Oconto County.

The Bayport‑Pioneer asset renewal project consists of the following:

n rebuilding the line between Bayport and Pioneer substations with double‑circuit structures,

n stringing both Bayport‑Pioneer lines, combine, and operate as one line at 138‑kV,

n converting Suamico and Sobieski substations to 138‑kV operation, and

n de‑energizing the Pulliam‑Bayport 69‑kV section of line.

The project is scheduled to be in service in December 2021.

Major projects update continued


Our progress

One of ATC’s top priorities has always been electric reliability. With that focus, ATC has strengthened the grid to enable our customers to participate in and reap the benefits of the wholesale energy market.

As we continue to use our system‑wide planning process to effectively and economically improve reliability, more emphasis is being placed on the need to efficiently maintain and upgrade our older assets. Our asset management program is focused on the life‑cycle management of transmission assets. The objective is to ensure assets perform the required function in a sustainable manner while managing life‑cycle cost. Coordination of design, commissioning, operation and maintenance is crucial to developing the replacement strategy of the assets. Asset renewal is mainly driven by public and worker safety, regulatory compliance, reliability, condition and operational performance.

Due in large part to our asset management efforts, ATC consistently achieves better reliability performance than our industry peers in all voltage classes.

Our single‑focus, transmission‑only business model has produced significant results for our customers over the years.

Over the past ten years, we have:

n upgraded more than 895 miles of transmission line,

n improved 105 electric substations,

n built 25 new transmission lines (367 miles)

n connected 1,980 MW of new generation at 12 sites,

– Includes 430 MW of renewable generation at 6 sites

n saved customers millions in reduced energy costs with access to the marketplace and lower line losses,

n increased import and export capability, and

n improved transmission reliability.

By focusing on

life‑cycle cost, our

asset management

program helps us

efficiently maintain

and upgrade our

older transmission

assets.



Early in our operational existence we focused on creating a smooth‑flowing electrical highway to more reliably serve our customers. This involved finding the logical places in our service area to develop transmission projects. Major, network‑driven projects accounted for significant investment in our 345‑kV system. As we were making our network more interconnected and reliable, we also analyzed the life‑cycle maintenance of our existing assets, focusing on an asset management strategy to complement and create synergies with our network additions.

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

In a collaborative process, our asset management and planning teams 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 internally and with customers to determine if replacement in kind is required and if other reliability needs exist within the geographic area. Needs are evaluated using various options to determine the best means of maintaining reliability. These discussions with customers occur at 10‑Year Assessment stakeholder meetings and MISO System Planning Meetings.

What drives the need for transmission system improvements?

COMMON NEEDS THAT DRIVE SYSTEM IMPROVEMENTS INCLUDE:

n New or retiring generation – changes in the generation impact on the transmission system, the location and amount of power flowing as well as system stability

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

n Enhanced NERC reliability standards – require a greater degree of redundancy and analysis to assure reliable, resilient operation

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

n Load changes – while overall load growth is low, loads are appearing and disappearing, changing power flows on the system

n New technologies – synchronized phasor measurements, demand‑side management and distributed energy 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


Project is not necessarily the preferred project

alternative

Planned Proposed Provisional

Status of ATC Studies complete Studies not complete Studies not complete planning activities

Application for Application pending None None regulatory approval or order issued

Project status Project in construction Project identified Project is not planning phase or under as preferred necessarily the preferred construction alternative alternative

Asset renewal projects generally fall into the Provisional or Planned categories.

For planning purposes, ATC’s service area is divided into five zones representing distinct geographic or usage areas. Within each zone, we compile and assess transmission system needs.

PROJECT CLASSIF ICATIONS

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 Provisional, depending upon the stage of the project.

Plans and proposals for the transmission system


NORTH CENTRAL WISCONSIN

Zone 1

ONEIDA

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

Transmission system characteristics in Zone 1

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

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

n 345‑kV line extending from Stevens Point, north to Wausau, and east toward Shawano County,

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

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 1

Zone 1 has a few key system performance issues. Low voltages that are a result of potential multiple contingency events will continue to be monitored, high voltages in the northern portion of the zone, and other studies have identified thermal limitations in the northern portion of the zone. The most severe limitations occur during both peak and off‑peak periods.

ELECTRIC SYSTEM OVERVIEW

Small increases expected in population, employment

Population in Zone 1 is projected to grow at 0.5 percent annually between now and 2027. Employment is projected to grow at 0.9 percent annually between now and 2027. 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 usage

Peak 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 several large paper mills and food processing plants.

Electric load is forecasted to grow approximately 0.4 percent annually through 2028.


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.

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








ONEIDA

LINCOLN

MARATHON

WAUPACA

SHAWANO

WOOD

JUNEAU

ADAMS

PORTAGE

WAUSHARA

MARQUETTE GREENLAKE

LANGLADE

SYSTEM SOLUTIONS KEY

NORTH CENTRAL WISCONSIN

Zone 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.

PROJECT DESCRIPTION IN-SERVICE YEAR NEED DRIVER

Planned Projects

Wild Rose – Harrison 69‑kV line (Y‑19) partial rebuild 2020 Condition and performance

Chaffee Creek – Lincoln Pump Station 69‑kV line 2021 Condition and performance (Y‑18) rebuild

Wautoma – Chaffee Creek 69‑kV line (Y‑49) rebuild 2021 Condition and performance

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

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Montello

Tomahawk

Waupaca

Juneau

Allamakee

Chippewa

Wood

La Crosse

Iron

Crawford

Lincoln

Vernon

Rusk

Oconto

Jackson

Forest

Shawano

Vilas

MarinetteOneida

Adams

Portage

Green Lake

Waushara

Eau Claire Clark

Taylor

Winona

BayfieldIron

Houston

Florence

Trempealeau

Dane

Monroe

Sauk

Marquette

Richland

Outagamie

Ashland

Gogebic

Winnebago

Langlade

Menominee

Columbia

Fond Du Lac

Sawyer

Dodge

Marathon

Price

West Shawano

Tomahawk -ATC 115kV

MercuryMarine

GrandfatherFalls

Sigel

Port Edwards

Arpin

WestWisconsin

Rapids

Winneconne

Wautoma

Sand Lake

Chaffee Creek

Iola

Watersmeet

Woodenshoe

Rubicon

Hintz

Butternut

Casaloma

Conover

Badger

Whitcomb White Clay

Rocky Run

Arnott

Lawn Rd

Green LakeSW STA

South FondDu LacSW YD

Ohmstead

Metomen

Mayville

Spring Brook

Kilbourn

Academy

NorthRandolph

Trienda

WhiteLake (WE)

Melissa

Hilltop(ALTE)

Crystal Falls

Mckenna

Vesper

Wild Rose

Wittenberg

West Mauston

Wonewoc

TomahIndustrial Pk

Troy

Rock Springs

Rozellville

RiponInd Park

Rudolph

SadoffCo

Pittsville

Portage IndPark

Poynette

Randolph

Red Granite

Richland

Ripon

Rosendale

North Tomah

Okee

Omro

Merrimac

Montello

Necedah

Loch Mirror

Loganville

LakePark

LincolnPump

STA

LyndonStation

Manawa

Markesan

ManleySand

Mauston

Hillsboro

HoriconInd Park

IslandKirkwood

East Scott St

Fall River

FountainValley

Friendship

Gays Mills

Hamilton St

Columbus(ALTE)

Brandon

BrooksCorners

Camp Douglas

Beaver Dam3rd St

Apple Hills

Baraboo

Hampden

Auburndale

Belle Plaine

ACECTurtleLake

East Shawano

Artesian

DPC LyndonStation

Hancock

Lake Delton

Dartford

DorsetCorners

SilverLake(ALTE)

Mears Corners

Ellinwood

Bowen St

OshkoshPearl Ave

Sunset Point

Cranberry

Golden Sands

Hoover

Northpoint

Venus

Hodag

St Germain

Three Lakes

Mountain

FoxHills SW

STA

Silver Cliff

Wien SW STA

Kelly

Morrison Ave

Sherman St

Stratford

Weston SW YD

Eastom

Aurora St

McMillan

CWEC Sannes

ACECArrowhead

ACEC Chateau

ACEC Coloma

ACECFriendship

ACEC Glen

ACEC Grant

ACEC Quincy

ACEC Roslin

ACEC Sherwood

ACEC Wautoma

ACEC WildRose Pump

ACEC Wildrose

ACEC Cambria

CWEC Dewey

Rosholt CWEC

Lincoln Ave(UPPCO)

ACEC Brooks

ACEC Dellwood

ACEC Lewiston

ACEC Richford

ACECSpringLake

ACECWinnebago

Platt

ColumbusSouth

HarrisonNorth138kV

Metonga

Martin Rd

Maine

ACEC Calamus

RichlandCenter

Pardeeville

SummitLake (WPS)

LodiIndustrial

Park Lodi

ACECCottonville

Hilltop (WPS)

Goodman

Grand Marsh

DPC NewLisbon

Clintonville

T Corners

DPC Buckhorn

Sunnyvale

Neevin

Butler Ridge

Werner West

Aspen

Highway 22

Finnegan

Hubbard

Wyocena

Plainfield(ALTE)

North Madison345/138 kV

Groenier

Hartman Creek

Hollywood

JuneauNorthside

JuneauIndustrial

Wisconsin Rapids

Hustisford

Koch Oil

ConsulatedWater Power(rrn)

ColumbusMuni 1

CardinalGlass Tomah

Endeavor

Houghton Rock

Badger West

LakeheadIron River

Mill Creek

Staff

Woodmin

Timberwolf

Middle Vlg

Sheridan(ALTE)

Fountain Prairie

WaupunWestside

Cedar Creek

Brewer

Eagle River

Richfield

Vulcan Chem

Berlin

NorthBeaver Dam

Dam Heights

ColumbiaSW YD(ALTE)

Fox Hills

Forest

Maes

NorthFond Du

Lac

SouthBeaver Dam

North MadisonDane

PineRiver(ALTE)

Polar

Reedsburg

NorthwestRipon

Oakfield

Zobel

Neenah Creek

Horicon

Fox River

Dell Creek

Center St

Birnamwood

Seneca

Waupaca

Plover

Clear Lake(WPS)

ACECPlainfield

Iron Grove

Antigo

Arlington

GrandfatherFalls Hydro

WisconsinDellsMuni 1

StoneLake

Juneau Downtown

CWECWittenberg

WisconsinDells Muni 2

Butte DesMorts

Didion

LakeheadVesper

Florence

Rosholt

Pine Hy

Rio PumpingStation

Hartford

Marion

Northside

Whiting Ave

ACECDoylestown

Gardner Park

Skillet Creek

RhinelanderPaper

Deer Trail

DPC BellCenter

Twin Lake

Coyne St

SkanawanSW STR

Wildwood(MEWD)

Big Pond

OmroIndustrial

Park

ACECFriesland

Werner

Roeder

Portage

Fox Lake(ALTE)

Fitzgerald

Pine (WPS)

ACECHancock

CedarRidge

Wind Generation

Sanborn

Cloverleaf

Council Creek

Lakota Rd

MackfordPrairie

Cambria

ForwardEnergyCenter

Highway Eight

CWEC Tigerton

Hume

Birchwood

Sauk City Phillips St

Tayco

Saratoga

Caroline

Deforest

Union Center

Harrison69kV

Ninth Street

Caledonia(ALTE)

Maple Street

Cassel

Amherst Jct

Baker St

Warrens

Land O Lakes

Ellington

River Run

Aviation

Castle Rock

Okray

Fairwater

Meadows

CWEC Iola

StoneLake

(Xcel)

ReedsburgNishan

Westfield

Coloma

LakeheadPortage

Alto

BeaverDam East

MosineePaper Mill

Kronen

Guenther

Oxford

Pershing

Tunnel City

Sauk CityOak St

Homer Road

Adams Line 61Briggs Road Monroe County

Creekview

Springwater

Ackley

Zone 1

!1

!3!2

1

3

2


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Montello

Waupaca

Juneau

Wood

Iron

Lincoln

Vernon

Oconto

Rusk

Jackson

Forest

Shawano

Vilas

Oneida

Adams

Portage

Green Lake

Waushara

Clark

Taylor

Florence

Monroe

Sauk

Marquette

Richland

Outagamie

Ashland

Winnebago

Langlade

Menominee

Columbia

Fond Du Lac

Sawyer

Dodge

Marathon

Price

West Shawano

Tomahawk -ATC 115kV

GrandfatherFalls

Sigel

Port Edwards

Arpin

WestWisconsin

Rapids

Winneconne

Wautoma

Sand Lake

Chaffee Creek

Iola

Hintz

Badger

Whitcomb

Rocky Run

Arnott

Green LakeSW STA

Metomen

Mayville

Kilbourn

NorthRandolph

Trienda

WhiteLake (WE)

Hilltop(ALTE)

Mckenna

Vesper

Wild Rose

Wittenberg

West Mauston

Wonewoc

TomahIndustrial Pk

Rozellville

RiponInd Park

Rudolph

Pittsville

PortageInd Park Randolph

Red Granite

Ripon

Rosendale

North Tomah

Omro

Montello

Necedah

Loch Mirror

LincolnPump

STA

LyndonStation

Manawa

Markesan

Mauston

Hillsboro

FountainValley

Friendship

Hamilton St

Brandon

BrooksCorners

Camp Douglas

Auburndale

Belle Plaine

ACECTurtleLake

East Shawano

Artesian

DPC LyndonStation

Hancock

Lake Delton

Dartford

DorsetCorners

SilverLake(ALTE)

Mears Corners

Ellinwood

Pearl Ave

SunsetPoint

Cranberry

Golden Sands

Hoover

Northpoint

Venus

Hodag

St Germain

Three Lakes

Wien SW STA

Kelly

Morrison Ave

Sherman St

Stratford

Weston SW YD

Eastom

Aurora St

McMillan

CWEC Sannes

ACECArrowhead

ACEC Chateau

ACEC Coloma

ACECFriendship

ACEC Glen

ACEC Grant

ACEC Quincy

ACEC Roslin

ACEC Sherwood

ACEC Wautoma

ACEC WildRose Pump

ACEC Wildrose

ACECCambria

CWEC Dewey

Rosholt CWEC

ACEC Brooks

ACEC Dellwood

ACEC Lewiston

ACEC Richford

ACECSpringLake

ACECWinnebago

Platt

HarrisonNorth138kV

Metonga

Maine

Pardeeville

SummitLake (WPS)

ACECCottonville

Hilltop (WPS)

Grand Marsh

DPC NewLisbon

Clintonville

T Corners

DPC Buckhorn

Sunnyvale

Werner West

Highway 22

Finnegan

Plainfield(ALTE)

Groenier

Hartman Creek

Hollywood

Wisconsin Rapids

Koch Oil

ConsulatedWater Power(rrn)

CardinalGlass Tomah

Endeavor

Houghton Rock

Badger West

Mill Creek

Staff

Woodmin

Timberwolf

Middle Vlg

Sheridan(ALTE)

WaupunWestside

Cedar Creek

Eagle River

Richfield

Vulcan Chem

Berlin

Fox Hills

Polar

Reedsburg

NorthwestRipon

Zobel

Neenah Creek

Fox River

Dell Creek

Birnamwood

Waupaca

Plover

Clear Lake(WPS)

ACECPlainfield

Antigo



CWECWittenberg


Didion

LakeheadVesper

Rosholt

Marion

Whiting Ave

Gardner Park

RhinelanderPaper

Deer Trail

Coyne St

SkanawanSW STR

Wildwood(MEWD)

Big PondOmro

IndustrialPark

ACECFriesland

Werner

Roeder

Portage

Fox Lake(ALTE)

Fitzgerald

Pine (WPS)

ACECHancock

Sanborn

Cloverleaf

Council Creek

MackfordPrairie

Cambria

Highway Eight

CWEC Tigerton

Hume

Birchwood

Saratoga

Caroline

Union Center

Harrison69kV

Cassel

Amherst Jct

Baker St

Warrens

Ellington

River Run

Aviation

Castle Rock

Okray

Fairwater

CWEC Iola

ReedsburgNishan

Westfield

Coloma

LakeheadPortage

Alto

MosineePaper Mill

Kronen

Guenther

Oxford

Pershing

Tunnel City

Adams Line 61Monroe County

Springwater

Ackley

P L A N N I N G ZONE 1

2018 10-YearAssessment Projects

Currently, ATC owns or operates transmission facilities in Wisconsin, Illinois, Minnesota, and the Upper Peninsula ofMichigan. Facilities include: * Approximately 9440 miles of transmission lines * 96 wholly owned substations * 419 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee,DePere, and Kingsford, MI

The information presented in this map documentis advisory and is intended for reference purposesonly. American Transmission Company owned andoperated facility locations are approximate.Depending on the status of the projects shown,the transmission line additions may be for illustrativepurposes only and may not reflect the actual routes.

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Montello

WaupacaWood

Adams

Portage

Green Lake

Waushara

Marquette

Wautoma

Sand Lake

Chaffee Creek

Green LakeSW STA

Mckenna

WildRose

Red Granite

Montello

Lincoln PumpSTA

Markesan

FountainValley

Friendship

ACECTurtleLake

Hancock

SilverLake(ALTE)

Golden Sands

ACECArrowhead

ACEC Chateau

ACEC Coloma

ACECFriendship

ACEC Glen

ACEC Grant

ACEC Sherwood

ACEC Wautoma

ACEC WildRose Pump

ACEC Wildrose

ACEC Brooks

ACEC Richford ACECSpringLake

ACECWinnebago

HarrisonNorth 138kV

ACECCottonville

Grand Marsh

Plainfield(ALTE)

Hartman Creek

Neenah Creek

Waupaca

ACECPlainfield

Roeder

ACECHancock

Saratoga

Harrison69kV

Westfield

Coloma

Oxford

Adams Line 61

Springwater

Wautoma Area

to La Crossearea

!1

!2!3

!1

!3

!2

1

3

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)



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

n Plains‑Stiles 138‑kV double‑circuit line,

n Lakota Road‑Plains 138‑kV line,

n Holmes‑Old Mead Rd 138‑kV line, and

n 138‑kV facilities tying the Upper Peninsula of Michigan to lower Michigan.


There 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 and high 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 or deteriorated 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.


Small increases expected in population, employment

Population in Zone 2 is projected to grow about 0.2 percent annually between now and 2027, and employment is expected to grow about 0.8 percent each year in the same time period. Marquette County (Michigan) is projected to realize the largest increase in population and employment. Florence County (Wisconsin) is projected to have the highest growth rate in population while Keweenaw County (Michigan) is projected to have the highest growth rate in employment.

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.

In the recent past, there have been some load reductions in Zone 2. From these reduced levels, electric load is forecasted to increase by 0.4 percent annually through 2028. 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.

MICHIGAN’S UPPER PENINSULA AND NORTHERN WISCONSIN

Zone 2

Zone 2

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Watson

Hulbert

Pickford

Waupaca

Antrim

Door

Dickinson

Menominee

Alcona

Montmorency

Lincoln

Oconto

Baraga

Emmet

Charlevoix

Forest

Mackinac

Shawano

Vilas

Marinette

Leelanau

Oneida

GrandTraverse

Portage

Cook

Ontonagon

Iron

Crawford

Florence

Benzie

Presque Isle

Schoolcraft

Chippewa

Brown Iosco

Keweenaw

Cheboygan

Oscoda

Marquette

GogebicAlger

Kewaunee Ogemaw

Otsego

Kalkaska

Langlade

Menominee

Houghton

Alpena

Luce

Marathon

Delta

West Shawano

Portage St Hy

Tomahawk -ATC 115kV

Lou Pac

Raco

Holmes

Rockview

Mich LimestoneLoading Dock

MichLimestone

Quarry

GrandfatherFalls

Rexton

Powers

Arnold

Watersmeet

BruceCrossing

Empire Mine

Stiles SW STA

Newberry Vlg

MichigammeFalls Hy

Brule SW STA

Chalk Hill HyWhiteRapids Hy

Mass

Nordic

Cornell-UP

Conover

Badger

Perkins

Whitcomb White Clay

Falls

PresqueIsle SW YD

National

Harris

DeadRiver(WE)

Tilden

Armory

Crystal Falls

Wittenberg

Sagola

Randville

BluffView

BrooksCorners

Champion

Belle Plaine

Big Bay

East Shawano

CranberryChandler

Venus

Hodag

St Germain

Three Lakes

Sobieski

Pioneer (WPS)

Mountain

Oconto

Bay De Noc

GrandRapids Hy

Pound

CaldronFalls Hy

Crivitz

Fox Hills SWSTA

SandstoneRapids Hy

Silver Cliff

Kelly

Morrison Ave

Sherman St

Weston SW YD

Eastom

Aurora St

Rosiere

Algoma

SawyerSW STA

Brusbay

Canal

Sister Bay

DyckesvilleSuamico

Victoria Hy

WhitePine Vlg

Seney (UPPCO)

UPSCO

Portage(UPPCO)

Rockland(UPP)

MTU

Keweenaw

Lake Mine

Henry St.(UPPCO)

K I SawyerForest Lake

Gladstone

Gwinn

Elevation St

Alger

Atlantic

CWEC Dewey

EscanabaSteam Plant

Algoma CityRosholt CWEC

Redwood

Sawyer Lumber

Bass Lake

NorthLake

LakeheadGould City

McGulpin

Metonga

Hiawatha(ESE)

Maine

LakeheadNaubinway

Evergreen

PineRiver

SummitLake (WPS)

FrankTalentinoSW STA

Hilltop (WPS)

Goodman

Indian Lake

Industrial

Watson

Chatham

Humboldt Mine

Baraga Vlg

Michigan St

Clintonville

Winona

Straits

BlaneyParkSW STA

Manistique

9 Mile SW STA

Mead Pump

Nathan

Sunnyvale

Newberry Tone

Aspen

TroutLake (CEC)

Brevort Detour

Dafter

PickfordRudyard

Gould CitySW STA

Groenier

Hiawatha(AD-REA)

Hulbert

KincheloeSW STA

JH Warden

Way Plant

TimberProducts

MichTransmitterFacility

Greenstone

Mead Paper

LakeheadRapidRiver

LakeheadIron River

MackinacMackinac Converter

Norway

Woodmin

Middle Vlg

Toivola

Sault

Cedar Creek

Twin FallsSW STA

Sherwood

Egg Harbor

North Bluff

Donken

Eckerman

EagleRiver

WhitePine Mine

Magazine

Plains

FelchMountain

GardenCorners

Perch Lake

Polar

Birnamwood

Clear Lake(WPS)

Osceola

Delta (UPPCO)

Forsyth

Iron Grove

Antigo

Brimley

Masonville(UPPCO)


Pine Grove

Aragon

Lena

Shingleton

Curtis Goetzville

CWEC Wittenberg

Barnum

Munising

Florence

Rosholt

Pine Hy

Marion

30thAve

St Ignace

Gardner Park

NewberryCorrectionalFacility

Engadine

RhinelanderPaper

Ingalls

Deer Trail

KingsfordMetals

Twin Lake

SkanawanSW STR

MarquetteDiesel

Valley (ESE)

NiagraPaper OfWisconsin

Thunder

Pine (WPS)

Cloverleaf

Old Mead Road

West Side

Lakota Rd

Highway Eight

CWEC Tigerton

M-38

3 Mile

Amberg

Caroline

Dunn Rd

Seney(AD-REA)

Cassel

Grede Foundries

High Falls Hy

L'anse

Land O Lakes

Glen Jenks

PeavyFalls Hy

Benson Lake

Ontonagon

Limeston

Peshtigo

Algoma South

MosineePaper MillKronen

Guenther

FrankTalentino

Boston

Homer Road

Huron

Ackley

L a k e S u p erior

L a k e Mi c higan






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






The 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.


MICHIGAN’S UPPER PENINSULA AND NORTHERN WISCONSIN

Zone 2

2

4

5

3

6



Zone 2

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Watson

Hulbert

Pickford

Waupaca

Antrim

Door

Dickinson

Menominee

Alcona

Montmorency

Lincoln

Oconto

Baraga

Emmet

Charlevoix

Forest

Mackinac

Shawano

Vilas

Marinette

Leelanau

Oneida

GrandTraverse

Portage

Cook

Ontonagon

Iron

Crawford

Florence

Benzie

Presque Isle

Schoolcraft

Chippewa

Brown Iosco

Keweenaw

Cheboygan

Oscoda

Marquette

GogebicAlger

Kewaunee Ogemaw

Otsego

Kalkaska

Langlade

Menominee

Houghton

Alpena

Luce

Marathon

Delta

West Shawano

Portage St Hy

Tomahawk -ATC 115kV

Lou Pac

Raco

Holmes

Rockview

Mich LimestoneLoading Dock

MichLimestone

Quarry

GrandfatherFalls

Rexton

Powers

Arnold

Watersmeet

BruceCrossing

Empire Mine

Stiles SW STA

Newberry Vlg

MichigammeFalls Hy

Brule SW STA

Chalk Hill HyWhiteRapids Hy

Mass

Nordic

Cornell-UP

Conover

Badger

Perkins

Whitcomb White Clay

Falls

PresqueIsle SW YD

National

Harris

DeadRiver(WE)

Tilden

Armory

Crystal Falls

Wittenberg

Sagola

Randville

BluffView

BrooksCorners

Champion

Belle Plaine

Big Bay

East Shawano

CranberryChandler

Venus

Hodag

St Germain

Three Lakes

Sobieski

Pioneer (WPS)

Mountain

Oconto

Bay De Noc

GrandRapids Hy

Pound

CaldronFalls Hy

Crivitz

Fox Hills SWSTA

SandstoneRapids Hy

Silver Cliff

Kelly

Morrison Ave

Sherman St

Weston SW YD

Eastom

Aurora St

Rosiere

Algoma

SawyerSW STA

Brusbay

Canal

Sister Bay

DyckesvilleSuamico

Victoria Hy

WhitePine Vlg

Seney (UPPCO)

UPSCO

Portage(UPPCO)

Rockland(UPP)

MTU

Keweenaw

Lake Mine

Henry St.(UPPCO)

K I SawyerForest Lake

Gladstone

Gwinn

Elevation St

Alger

Atlantic

CWEC Dewey

EscanabaSteam Plant

Algoma CityRosholt CWEC

Redwood

Sawyer Lumber

Bass Lake

NorthLake

LakeheadGould City

McGulpin

Metonga

Hiawatha(ESE)

Maine

LakeheadNaubinway

Evergreen

PineRiver

SummitLake (WPS)

FrankTalentinoSW STA

Hilltop (WPS)

Goodman

Indian Lake

Industrial

Watson

Chatham

Humboldt Mine

Baraga Vlg

Michigan St

Clintonville

Winona

Straits

BlaneyParkSW STA

Manistique

9 Mile SW STA

Mead Pump

Nathan

Sunnyvale

Newberry Tone

Aspen

TroutLake (CEC)

Brevort Detour

Dafter

PickfordRudyard

Gould CitySW STA

Groenier

Hiawatha(AD-REA)

Hulbert

KincheloeSW STA

JH Warden

Way Plant

TimberProducts

MichTransmitterFacility

Greenstone

Mead Paper

LakeheadRapidRiver

LakeheadIron River

MackinacMackinac Converter

Norway

Woodmin

Middle Vlg

Toivola

Sault

Cedar Creek

Twin FallsSW STA

Sherwood

Egg Harbor

North Bluff

Donken

Eckerman

EagleRiver

WhitePine Mine

Magazine

Plains

FelchMountain

GardenCorners

Perch Lake

Polar

Birnamwood

Clear Lake(WPS)

Osceola

Delta (UPPCO)

Forsyth

Iron Grove

Antigo

Brimley

Masonville(UPPCO)


Pine Grove

Aragon

Lena

Shingleton

Curtis Goetzville

CWEC Wittenberg

Barnum

Munising

Florence

Rosholt

Pine Hy

Marion

30thAve

St Ignace

Gardner Park

NewberryCorrectionalFacility

Engadine

RhinelanderPaper

Ingalls

Deer Trail

KingsfordMetals

Twin Lake

SkanawanSW STR

MarquetteDiesel

Valley (ESE)

NiagraPaper OfWisconsin

Thunder

Pine (WPS)

Cloverleaf

Old Mead Road

West Side

Lakota Rd

Highway Eight

CWEC Tigerton

M-38

3 Mile

Amberg

Caroline

Dunn Rd

Seney(AD-REA)

Cassel

Grede Foundries

High Falls Hy

L'anse

Land O Lakes

Glen Jenks

PeavyFalls Hy

Benson Lake

Ontonagon

Limeston

Peshtigo

Algoma South

MosineePaper MillKronen

Guenther

FrankTalentino

Boston

Homer Road

Huron

Ackley

L a k e S u p erior

L a k e Mi c higan



Planned Projects

Munising‑Blaney Park 69‑kV line (Inland) rebuild 2019 Condition and performance

J703: Huron Substation, new G‑T interconnection 2019 G‑T interconnection

J704: Silver River Substation, new G‑T interconnection 2019 G‑T interconnection

Plains – Arnold 138‑kV uprate 2019 Network integration transmission service request

Proposed Project

J711‑Silver River Substation, network upgrades 2020 G‑T interconnection

Provisional Projects

Lakota – Winona 138‑kV conversion 2021 Overloads and low voltages

Mackinac – McGulpin 138‑kV submarine cables (9901, 9903), replacement

2021 Condition


1

2

3

4

5

6

7

1

7

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)



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, and

n 138‑kV facilities from Nelson Dewey, around the Madison area, and in the northwest and southeast portions of Zone 3.


In our analysis of Zone 3, we identified a number of transmission facility overloads. These overloads are due to new generation in the Janesville and Darlington areas. In addition, other emerging issues resulting in facility overloads include steady growth in certain areas and different generation dispatches. The most severe limitations occur during both peak and off‑peak periods.


Increases expected in population, employment

Population in Zone 3 is projected to grow about 0.8 percent annually between now and 2027, and employment is projected to grow about 1.3 percent each year for the same time period. Dane County is projected to realize the largest increase in population and employment. Dane County is also projected to have the highest growth rate in population and employment.

Electricity usage

Electric load is forecasted to grow approximately 0.7 percent annually through 2028 in Zone 3.

SOUTH CENTRAL/SOUTHWEST WISCONSIN AND NORTH CENTRAL ILLINOIS

Zone 3


Boscobel

Bloomington

Colley Rd

Gran Grae

Mukwonago

Waupun

Milton Lawns

Green

StephensonJo Daviess

Juneau

Allamakee

Racine

Mchenry

La Crosse

Crawford

Lake

Vernon

Washington

Jackson

Winnebago

Adams Green Lake

Waushara

Kenosha

Walworth

Iowa

Dane

Monroe

Sauk

Grant

Lafayette

Marquette

Richland

Boone

Winnebago

Clayton

Columbia

Rock

Dubuque

Fond Du Lac

Waukesha

Jefferson

Dodge

Calumet

Delaware

WalnutGIS

Wally Road

Mercury Marine

Wautoma

Chaffee Creek

Sussex

Sugar Creek

Mukwonago

Tamarack

Concord SW YD

Rubicon

Bark River

Boxelder

Butternut

St Lawrence

Auburn

Spring Green

Tripp Rd

Rock River

McCue

Sunrise

Turtle

BrodheadSW STA

Jefferson

Rock Branch

Green LakeSW STA

South Monroe

North Monroe

NelsonDewey

SW YD

Hillman

South FondDu Lac SW YD

Ohmstead

Metomen

Mayville

Spring Brook

Yahara River

StageCoach

SW STA

Stoughton

Sun Prairie

Rockdale

Pleasant View

Kegonsa

Gran Grae

Kilbourn

Academy

NorthRandolphTrienda

Barton

Mount Horeb

Hilltop(ALTE)

CrawfishRiver

Burlington

Mckenna

WyomingValley

Zenda

Viking

VentureWiota

Wauzeka

West Mauston

Wonewoc

Tichigan

TomahIndustrial Pk

Troy

Rock Springs

RiponInd Park

SadoffCo

Stony Brook

Spring Grove

Shullsburg

Pioneer(ALTE)

PleasantValley

Potosi

Portage IndPark

Poynette

Randolph

Red Granite

Rewey

Richland

Ripon

Rosendale

NewHollandale

North Tomah

Okee

Omro

Merrimac

Mineral Point

Montello

Maple (WE)

Marine

Necedah

LakeGeneva

Lancaster

London

LakeheadCambridge

Loch Mirror

LakeheadWaterloo

LaMar

Loganville

LincolnPump STA

LyndonStation

Markesan

Manley Sand

Mauston

Mazomanie

McFarland

Hillsboro

HoriconIndPark

Idle Hour

Island

Kirkwood

Elmo

East Beloit

East Scott St

Fall River

Footville

Forward

Friendship

Fort Atkinson

Gays Mills

Gaston Rd

Hamilton St

Cottage Grove

Columbus(ALTE)

Dana Corp

Delavan

Blanchardville

Black Earth

Brandon

Brisbois

Browntown

Brodhead

Blacksmith

Brooklyn

Camp Douglas

Beaver Dam3rd St

Albany (ALTE)

Arena

Baraboo

Belmont

Benton

Burke

Hampden

ACECTurtleLake

RECShaw

Air Liquide

Ledgeview

Artesian

DPC LyndonStation

DPCPrairieDu Chien

Monticello(ALTE)

Lake Delton

Dartford

DorsetCorners

Sharon

ShirlandAve

Silver Lake(ALTE) Ellinwood

Bowen St

OshkoshPearl Ave

Sunset PointGravesville

NewHolstein SW

STA

Syene

American

ACEC Chateau

ACEC Coloma

ACEC Friendship

ACEC Glen

ACEC Quincy

ACEC Roslin

ACEC Cambria

REC Bradford

Stoughton East

REC Newark

RECOrfordville

ACEC Brooks

ACEC Dellwood

ACEC Lewiston

ACEC RichfordACECSpringLake

ACECWinnebago

Platt

ColumbusSouth

Edgewood

Cuba CitySouth

Martin Rd

Wingra

Waunakee SWSTA

Blount

Christiana

Nine Springs

PheasantBranch

Royster

SycamoreSW YD

Walnut(MGE)

ACEC Calamus

Westport

Sprecher

Rienzi Road

RichlandCenter

Pardeeville

Pflaum

UnionTownline

New Glarus

LodiIndustrial

Park Lodi

Femrite

Glen Haven

Vienna

Grand Marsh

DPC NewLisbon DPC Buckhorn

Wick Drive

Tokay

Butler Ridge

REC LaPrairie

StoughtonSouth

Finnegan

Mill Rd

SouthwestDelavan

Russell

HubbardWyocena

Miners


JuneauNorthside

Bluff Creek

Scot Forge 2

JuneauIndustrial

Willow Lawn

ScotForge 1

MazomanieIndustrial

AGA Gas

Hustisford

Koch Oil

Cross Plains

Boscobel Muni

Boscobel MuniEastside

ColumbusMuni 1

Muscoda

CardinalGlassTomah

NorthStoughton

South

Endeavor

Houghton Rock

Richmond Road

MuscodaIndustrialSub

Staff

Timberwolf

REC Red Hawk

Vinburn

Fountain Prairie

Highway 151

WaupunWestside

Hillside

University(WE)

Cooney

Brewer

Ruskin

Bird St

DPC Gratiot

Bloomington

JenningsRd SW STA

Darlington

DodgevilleEden

Berlin

Boscobel

NorthBeaver Dam

Bristol(ALTE)

Dam Heights

Paddock

ColumbiaSW YD(ALTE)

Fox Hills

Forest

Cardinal

Bass Creek

Sheepskin

NorthFond Du

Lac

Elkhorn

SouthBeaver Dam

Reiner Rd

NorthMadison

CrossCountry

Dane

Waukesha

Janesville General SW YD

Cottonwood(WE)

WilliamsBay

Timberlane

Token Creek

Traxler

TwinLakes (ALTE)

SaundersCreek

PineRiver(ALTE)

Reedsburg

NorthwestRipon

Oakfield

Zobel

Neenah Creek KettleMorraine(ALTE)

Horicon

Hooterville

Fox River

Dell Creek

East Rockton

Blue River

Cambridge

Center St

Seneca

LancasterDistribution

FordDrive

North LakeGeneva

Arlington

Walworth

South LakeGeneva

Avoca

Cobblestone

Fitchburg

Centennial Park

DivisionStreet


BrodheadCentral

LakeheadPipeline

Juneau Downtown


BrodheadSouth

ColladayPoint

La Pointe

Lands End

Didion

Arthur Road

Oregon

Rio PumpingStation

Hartford

Macy St

ACECDoylestown

GlacierSkillet Creek

West Towne

Verona

Katzenberg

DPC BellCenter

Belleville

Oak Ridge

Sun PrairieBusiness Park

Big Pond

Duplainville

OmroIndustrialPark

ACECFriesland

Roeder

Portage

Park Ave

Fox Lake(ALTE)

Kieler

Fitzgerald

REC Center

REC Clinton

DPCShullsburg

CedarRidge WindGeneration

TyranenaWestMiddleton

Sanborn

DPCStoneman

MonroeCentral

Sun Valley

GermantownSW YD

Council Creek

WestDarien

OrfordvilleCuba City

MackfordPrairie

Cambria

ForwardEnergyCenter

Birchwood

Whitewater

Summit

Sauk CityPhillips St

Cassville

EvansvilleMuni

Deforest

Union Center

Cypress SW YD

Merrill Hills

Ninth Street

Lone Rock

Caledonia(ALTE)

Maple Street

East Towne

REC Harmony

River Run

Aviation

Castle Rock

Fairwater

Brick Church

Tecumseh Rd

ReedsburgNishan

BrodheadNorth

Westfield

REC Fulton

Coloma

LakeheadDelavan

LakeheadPortage

Alto

BeaverDam East

Balsam

Oxford

Tunnel City

Sauk CityOak St

EastLincoln St

Esker View

Adams Line 61

LakeheadWaterloo 2

Briggs Road

Tiger

Monroe County

LakeheadDelavan T2

Falcon

StoughtonWest

Creekview

EdgertonBusiness

Park

Hill Valley

Red Bird

Zone 3

to Dubuque County area

I L L I NOIS






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

























The 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.



4

8

9

SOUTH CENTRAL/SOUTHWEST WISCONSIN AND NORTH CENTRAL ILLINOIS

Zone 3

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Iowa

Dane

Sauk

WalnutGIS

Wally Road

Yahara River

Stage CoachSW STA

SunPrairie

Pleasant View

KegonsaMount Horeb

Mazomanie

McFarland

Gaston Rd

Cottage Grove

Black Earth Burke

Syene

American

Wingra

Waunakee SWSTA

East Campus

Blount

NineSprings

PheasantBranch

Royster

SycamoreSW YD

Walnut(MGE)

Blackhawk(MGE)

Westport

Sprecher

PflaumFemrite

Vienna

Wick Drive

Tokay

MazomanieIndustrial

AGA Gas

Cross Plains

NorthStoughton

SouthHighway 151

Ruskin

Bird St

WaunakeeIndustrialPark

Cardinal

Reiner Rd

Cross Country

Timberlane

Token Creek

Gateway

Fitchburg

CentennialPark

Division Street

ColladayPoint

Oregon

West Towne

VeronaOak Ridge


Femrite138/69 kV

WestMiddleton

Sun Valley

East Towne

Huiskamp

Colorado

Mendota

EastLincoln St

Madison Area

!9

!8!10


10

8

9


Boscobel

Bloomington

Colley Rd

Gran Grae

Mukwonago

Waupun

Milton Lawns

Green

StephensonJo Daviess

Juneau

Allamakee

Racine

Mchenry

La Crosse

Crawford

Lake

Vernon

Washington

Jackson

Winnebago

Adams Green Lake

Waushara

Kenosha

Walworth

Iowa

Dane

Monroe

Sauk

Grant

Lafayette

Marquette

Richland

Boone

Winnebago

Clayton

Columbia

Rock

Dubuque

Fond Du Lac

Waukesha

Jefferson

Dodge

Calumet

Delaware

WalnutGIS

Wally Road

Mercury Marine

Wautoma

Chaffee Creek

Sussex

Sugar Creek

Mukwonago

Tamarack

Concord SW YD

Rubicon

Bark River

Boxelder

Butternut

St Lawrence

Auburn

Spring Green

Tripp Rd

Rock River

McCue

Sunrise

Turtle

BrodheadSW STA

Jefferson

Rock Branch

Green LakeSW STA

South Monroe

North Monroe

NelsonDewey

SW YD

Hillman


Ohmstead

Metomen

Mayville

Spring Brook

Yahara River

StageCoach

SW STA

Stoughton

Sun Prairie

Rockdale

Pleasant View

Kegonsa

Gran Grae

Kilbourn

Academy

NorthRandolphTrienda

Barton

Mount Horeb

Hilltop(ALTE)

CrawfishRiver

Burlington

Mckenna

WyomingValley

Zenda

Viking

VentureWiota

Wauzeka

West Mauston

Wonewoc

Tichigan

TomahIndustrial Pk

Troy

Rock Springs

RiponInd Park

SadoffCo

Stony Brook

Spring Grove

Shullsburg

Pioneer(ALTE)

PleasantValley

Potosi

Portage IndPark

Poynette

Randolph

Red Granite

Rewey

Richland

Ripon

Rosendale

NewHollandale

North Tomah

Okee

Omro

Merrimac

Mineral Point

Montello

Maple (WE)

Marine

Necedah

LakeGeneva

Lancaster

London

LakeheadCambridge

Loch Mirror

LakeheadWaterloo

LaMar

Loganville

LincolnPump STA

LyndonStation

Markesan

Manley Sand

Mauston

Mazomanie

McFarland

Hillsboro

HoriconIndPark

Idle Hour

Island

Kirkwood

Elmo

East Beloit

East Scott St

Fall River

Footville

Forward

Friendship

Fort Atkinson

Gays Mills

Gaston Rd

Hamilton St

Cottage Grove

Columbus(ALTE)

Dana Corp

Delavan

Blanchardville

Black Earth

Brandon

Brisbois

Browntown

Brodhead

Blacksmith

Brooklyn

Camp Douglas

Beaver Dam3rd St

Albany (ALTE)

Arena

Baraboo

Belmont

Benton

Burke

Hampden

ACECTurtleLake

RECShaw

Air Liquide

Ledgeview

Artesian

DPC LyndonStation

DPCPrairieDu Chien

Monticello(ALTE)

Lake Delton

Dartford

DorsetCorners

Sharon

ShirlandAve

Silver Lake(ALTE) Ellinwood

Bowen St

OshkoshPearl Ave

Sunset PointGravesville

NewHolstein SW

STA

Syene

American

ACEC Chateau

ACEC Coloma

ACEC Friendship

ACEC Glen

ACEC Quincy

ACEC Roslin

ACEC Cambria

REC Bradford

Stoughton East

REC Newark

RECOrfordville

ACEC Brooks

ACEC Dellwood

ACEC Lewiston

ACEC RichfordACECSpringLake

ACECWinnebago

Platt

ColumbusSouth

Edgewood

Cuba CitySouth

Martin Rd

Wingra

Waunakee SWSTA

Blount

Christiana

Nine Springs

PheasantBranch

Royster

SycamoreSW YD

Walnut(MGE)

ACEC Calamus

Westport

Sprecher

Rienzi Road

RichlandCenter

Pardeeville

Pflaum

UnionTownline

New Glarus

LodiIndustrial

Park Lodi

Femrite

Glen Haven

Vienna

Grand Marsh

DPC NewLisbon DPC Buckhorn

Wick Drive

Tokay

Butler Ridge

REC LaPrairie

StoughtonSouth

Finnegan

Mill Rd

SouthwestDelavan

Russell

HubbardWyocena

Miners


JuneauNorthside

Bluff Creek

Scot Forge 2

JuneauIndustrial

Willow Lawn

ScotForge 1

MazomanieIndustrial

AGA Gas

Hustisford

Koch Oil

Cross Plains

Boscobel Muni

Boscobel MuniEastside

ColumbusMuni 1

Muscoda

CardinalGlassTomah

NorthStoughton

South

Endeavor

Houghton Rock

Richmond Road

MuscodaIndustrialSub

Staff

Timberwolf

REC Red Hawk

Vinburn

Fountain Prairie

Highway 151

WaupunWestside

Hillside

University(WE)

Cooney

Brewer

Ruskin

Bird St

DPC Gratiot

Bloomington

JenningsRd SW STA

Darlington

DodgevilleEden

Berlin

Boscobel

NorthBeaver Dam

Bristol(ALTE)

Dam Heights

Paddock

ColumbiaSW YD(ALTE)

Fox Hills

Forest

Cardinal

Bass Creek

Sheepskin

NorthFond Du

Lac

Elkhorn

SouthBeaver Dam

Reiner Rd

NorthMadison

CrossCountry

Dane

Waukesha

Janesville General SW YD

Cottonwood(WE)

WilliamsBay

Timberlane

Token Creek

Traxler

TwinLakes (ALTE)

SaundersCreek

PineRiver(ALTE)

Reedsburg

NorthwestRipon

Oakfield

Zobel

Neenah Creek KettleMorraine(ALTE)

Horicon

Hooterville

Fox River

Dell Creek

East Rockton

Blue River

Cambridge

Center St

Seneca

LancasterDistribution

FordDrive

North LakeGeneva

Arlington

Walworth

South LakeGeneva

Avoca

Cobblestone

Fitchburg

Centennial Park

DivisionStreet


BrodheadCentral

LakeheadPipeline

Juneau Downtown


BrodheadSouth

ColladayPoint

La Pointe

Lands End

Didion

Arthur Road

Oregon

Rio PumpingStation

Hartford

Macy St

ACECDoylestown

GlacierSkillet Creek

West Towne

Verona

Katzenberg

DPC BellCenter

Belleville

Oak Ridge


Big Pond

Duplainville

OmroIndustrialPark

ACECFriesland

Roeder

Portage

Park Ave

Fox Lake(ALTE)

Kieler

Fitzgerald

REC Center

REC Clinton

DPCShullsburg


TyranenaWestMiddleton

Sanborn

DPCStoneman

MonroeCentral

Sun Valley

GermantownSW YD

Council Creek

WestDarien

OrfordvilleCuba City

MackfordPrairie

Cambria

ForwardEnergyCenter

Birchwood

Whitewater

Summit

Sauk CityPhillips St

Cassville

EvansvilleMuni

Deforest

Union Center

Cypress SW YD

Merrill Hills

Ninth Street

Lone Rock

Caledonia(ALTE)

Maple Street

East Towne

REC Harmony

River Run

Aviation

Castle Rock

Fairwater

Brick Church

Tecumseh Rd

ReedsburgNishan

BrodheadNorth

Westfield

REC Fulton

Coloma

LakeheadDelavan

LakeheadPortage

Alto

BeaverDam East

Balsam

Oxford

Tunnel City

Sauk CityOak St

EastLincoln St

Esker View

Adams Line 61

LakeheadWaterloo 2

Briggs Road

Tiger

Monroe County

LakeheadDelavan T2

Falcon

StoughtonWest

Creekview

EdgertonBusiness

Park

Hill Valley

Red Bird

Zone 3

to Dubuque County area

I L L I NOIS

5

1

3

2

16

7

8

10


Planned ProjectsBadger Coulee: Briggs Rd – North Madison – Cardinal 345‑kV line construction

2018 Reliability, economics and public policy

J390: Kittyhawk Substation, new G‑T interconnection 2019 G‑T interconnection

J395: Darlington – North Monroe 138‑kV line (X‑49), Uprate 2019 G‑T interconnection

Lone Rock – Boscobel 69‑kV line (Y‑124) rebuild 2019 Condition and performance

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

Portage – Staff – North Randolph 138‑kV lines (X‑6), (X‑98), rebuild 2020 Condition and performance

Sheepskin – Stoughton 69‑kV line (Y‑12) rebuild 2021 Condition and performance

Proposed ProjectsNorthern Lights Substation, new T‑D interconnection 2020 T‑D interconnection

Cardinal – Hickory Creek 345‑kV line construction 2023 Reliability, economics and public policy

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


1

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3

4

5

6

7

8

9

10

23





Population in Zone 4 is projected to grow at 0.6 percent annually between now and 2027. Employment is projected to grow at 1.0 percent annually between now and 2027. Brown County is projected to realize the largest increase in population and employment. Calumet County is projected to have the highest growth rate in population and Sheboygan County is projected to have the highest growth rate in employment.

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 and around 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 0.3 percent annually through 2028. 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.



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

n two 345‑kV lines extending from the Edgewater Power Plant to South Fond du Lac and Cedarsauk,

n two additional 345‑kV lines connecting the South Fond du Lac Power Plant to Columbia and Fitzgerald,

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

n four 345‑kV lines from North Appleton to Kewaunee, Fox River, Werner West and Fitzgerald, and

n a 138‑kV network throughout the zone.


In our analysis of Zone 4, we found high voltages in Calumet County 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.

Several area projects are related to the underlying condition and performance of assets in 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)

NORTHEAST WISCONSIN

Zone 4









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: North Appleton – Morgan 345‑kV and 138‑kV line construction

2018 Overloads and low voltages

Cedar Ridge Wind – Mullet River 138‑kV line (X‑97) rebuild 2020 Condition and performance

Edgewater SS, 345‑kV bus reconfiguration 2020 Condition and performance

Goodman – Caldron Falls 69‑kV line (J‑88) rebuild 2020 Condition and performance

Butte des Morts – Sunset Point 138‑kV lines (40321), (80952), (A‑79), (MCRG21) rebuild

2021 Condition and performance

Finger Rd – Canal 69‑kV line (J‑10) rebuild 2021 Condition and performance

Ogden St. – Bayshore 69‑kV line construction 2021 Provide network service

Hwy V – Oak St 69‑kV line (Z‑26) rebuild 2022 Condition and performance

Proposed ProjectsBayport area – Pioneer, rebuild as double‑circuit 138‑kV 2021 Condition, performance and provide network service

Pioneer – Crivitz (E‑83/B‑2), retire 69‑kV and 2022 Condition, performance, reconfigure load to 138‑kV and provide network service


1

2

3

4

7

5

8

6

9

10



NORTHEAST WISCONSIN

Zone 4

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12th

CityLimits

ForestJunction

Morgan

Lawn Rd

Progress

HighFalls Hy

Highway V

Waupun

Ozaukee

Waupaca

Door

Menominee

Oconto

Washington

Forest

Shawano

Marinette

Green Lake

Waushara

Manitowoc

Brown

Sheboygan

Outagamie

Winnebago

Kewaunee

Menominee

Langlade

Columbia

Fond Du Lac

Dodge

Delta

Calumet

West Shawano

Holland

SheboyganFalls Energy

Center SW YD

Holmes

Mercury Marine

Mpu Plant

Winneconne

Iola

Woodenshoe

Point BeachSW YD

Elkhart Lake

Stiles SW STA

Hintz

Butternut

Chalk Hill Hy

WhiteRapids Hy

Casaloma

Badger

Auburn

SouthSheboygan

Falls

20th St

White Clay

Lawn Rd

Falls

Green LakeSW STA

SouthFond Du LacSW YD

Ohmstead

Metomen

Mayville

NorthRandolph

WhiteLake (WE)

NorthMullet River

Melissa

KaukaunaCentral

RiponInd Park

SadoffCo

Randolph

Red Granite

Ripon

Rosendale

Nicolet

NorthGate

Omro

Lake Park

Manawa

Markesan

East Scott St

FountainValley

Brandon

BrooksCorners

32nd St

Apple Hills

Belle Plaine

Ledgeview

CombinedLocks

East Shawano

Dartford

Mears Corners

Ellinwood

Bowen St

OshkoshPearl Ave

Sunset Point

Sobieski

Pioneer(WPS)

Mountain

Oconto

Bay De Noc

GrandRapids Hy

Pound

CaldronFalls Hy

Crivitz

Fox HillsSW STA

Ogden St

SandstoneRapids Hy

Silver Cliff

WestMarinetteSW YD

Mishicot

Custer

Manrap

Rosiere

KewauneeSW YD

Barnett

Algoma

Beardsley St

East Krok

SawyerSW STA

Brusbay

Canal

Sister Bay

Northeast

Rapids

Glenview

Gravesville

NewHolstein SW

STA

Velp Ave

Preble

Oak St

Liberty St

De Pere

Ashland Ave

Dyckesville

Finger Rd SWSTA

Howard

Lost Dauphin

Red Maple

Suamico

Wesmark

First Ave

Dewey

Algoma City

LakefrontSW YD

Redwood

Mirro

Northside(sfm)

(ALTE)

HarrisonNorth 138kV

Metonga

Martin Rd

Rockland(WPS)

PlymouthSub 4

RienziRoad

Goodman

Industrial

Michigan St

Clintonville

Howards Grove

Ontario

Nathan

Neevin

Werner West

Highway 22

Columbus St

Scott Paper Co

Glory Rd

Fox RiverSW YRD

Willow Lawn

Hickory St PlymouthMuncipal

Monroe St

Koch Oil

Greenleaf

Middle Vlg

WaupunWestside

LittleSuamico

Kaukauna North

Sherwood

Egg Harbor

Mason St

Berlin

North Appleton

ErdmanForest

Maes

Edgewater SW YD

NorthFond

Du Lac

Mullet River

7th St

Polar

Riverside (ALTE)

NorthwestRipon

Oakfield

KettleMorraine(ALTE)

Fox River

Waupaca

FordDrive

Fredonia

Lena

St Nazianz

Plymouth Sub 3

Butte DesMorts

Lyndon

WellsSt

Didion

Bemis

Marion

Macy St

Northside

30th Ave

Revere Dr

BrillionIron Works

Ingalls

Deer Trail

Shoto

OmroIndustrialPark

ACECFriesland

Werner

Roeder

Fox Lake(ALTE)

Fitzgerald

Thunder

Maplewood

Cedar RidgeWind Generation

Cloverleaf

BayportSW STA

MackfordPrairie

Cambria

ForwardEnergyCenter

Ryan St

CWEC Tigerton

Amberg

Tayco

Caroline

Dunn Rd

Cypress SW YD

Harrison69kV

High Falls Hy

Ellington

River Run

Aviation

Menominee

Pulliam SW YD

Booster

Luxemburg

Fairwater

Meadows

Benson Lake

Kellnersville

Tecumseh Rd

CWEC Iola

Iron Foundry

Peshtigo

Alto

Algoma South

Esker View

New HolsteinRoosevelt

Branch River

Creekview

Apollo

Zone 4

L a k e Mi c

higan


5

8

4

3

2

1

6

710

9


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#* DePere

Highway V

Brown

Velp Ave

Preble

Oak St

Liberty St

James St

De Pere

Ashland AveBluestone

Finger RdSW STA

Henry St(WPS)

Howard

Mystery Hills

SouthBroadway

Tower Dr

Van Buren St

Glory Rd

Mason St

7th St

Potts Avenue

NicoletPaper Co

Eastman Ave

BayportSW STA

Pulliam SW YDDanzAve SWSTA

GloryRoadNorth

Green Bay Area

!88


COUNTIES INCLUDED IN ZONE 5 – SOUTHEAST WISCONSIN

Kenosha | Milwaukee | Ozaukee | Racine | Washington | Waukesha



Population in Zone 5 is projected to grow 0.5 percent annually between now and 2027, 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. Waukesha County is also projected to have the highest growth rate in employment while Ozaukee County is projected to have the highest growth rate in population.

Electricity usage

Peak electric demand typically occurs during the summer months. Large industrial loads in the Milwaukee metropolitan area are among the largest electricity users in the zone.

Electric load is forecasted to grow approximately 0.7 percent annually through 2028.



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 Oak Creek power plant,

n 230‑kV facilities near Milwaukee, and

n a significant 138‑kV network in the Milwaukee area, a portion of which is underground.


Transmission system performance issues in Zone 5 include 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


AMERICAN TRANSMISSION CO. 2016 10‑YEAR ASSESSMENT


Planned Projects

Mount Pleasant Tech Interconnection Project 2019 T‑D interconnection

Mukwonago‑Edgewood‑St. Martins 138‑kV lines 2019 Condition and performance (3013), (671K61), rebuild

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

Paris‑Burlington 138‑kV line (8962) rebuild 2021 Condition and performance

St. Lawrence‑Barton‑Auburn 138‑kV lines 2022 Condition and performance (8032), (9752), rebuild

Proposed Projects

Juneautown Substation, new T‑D interconnection 2020 T‑D interconnection

Port Washington‑Saukville 138‑kV rebuild line 762 to a double circuit

2021 Overloads


3

1

4

5

6

7

2






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




























SOUTHEAST WISCONSIN

Zone 5



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Arcadian

Branch

I L L I NOIS

St. Martin

Ozaukee

Racine

Mchenry Lake

Washington

Kenosha

Milwaukee

Walworth

Sheboygan

Boone

Rock

Fond Du Lac

WaukeshaJefferson

Dodge

Holland

MercuryMarine

Russel Term

Sussex

Sugar Creek

Shorewood

Saukville

Mukwonago

Tamarack

PleasantPrairie

SW YD

Lakeview

Bain

Concord SW YD

Somers

Rubicon

Paris

Bark River

Butternut

St Lawrence

Auburn

SouthSheboygan

Falls

PortWashingtonSW YD


Mayville

Spring Brook

Racine

Barton

Bluemound

Tosa

Norwich

Kansas

North MulletRiver

Pennsylvania

Branch

Parkland

Lincoln

Harbor (WE)

Granville

Cornell -Milwaukee

Center

28th St

Dewey (WE)

Fiebrantz

96th St

O Connor

Mequon

Albers

CrawfishRiver

Glendale

Range Line SW

St Martins

Root River

Ramsey

Burlington

Zenda

West Junction

SpringValley(WE)

Tichigan

PleasantValley

Nicolet

Maple (WE)

Lake Geneva

HoriconInd Park

Delavan

Brandon

Beaver Dam3rd St

Brookdale

Air Liquide

Charter Steel

RangeLineDist

Sharon

Morris St

REC Bradford

51st St Term

Northside (sfm)(ALTE)

Sidney Term

43rd St Term

Edgewood

Martin Rd

Moorland

Elm Road345 Sws Yd

Butler Ridge

Mill Rd

SouthwestDelavan

Hubbard

Oak Creek (COMS230kV) SW YD

JuneauNorthside

Bluff Creek

JuneauIndustrial

Willow Lawn

Plymouth Muncipal

Monroe St

Hustisford

Koch Oil

Adams St

Richmond Road

Zion EnergyCenter

Plainfield(WE)

WaupunWestside

Oak CreekSW YD

University(WE)

Cooney

Waupun Prison

NorthBeaver Dam

Bristol(ALTE)

CedarburgSouth

Lodestar

Elkhorn

Waukesha

Mullet River

Valley(WE)

Cottonwood(WE)

Williams Bay

Swan

TwinLakes (ALTE)

Sauk Trail

Oakfield

Nicholson(WE)

KettleMorraine(ALTE)

Horicon

Center St

Clinton(ALTE)

North LakeGeneva

Kenosha

Fredonia

HaymarketSquare

Kohler

HumboltTerm

Walworth

SheboyganFalls

South LakeGeneva

Butler

CobblestoneLakeheadPipeline

River Bend

JuneauDowntown

Hayes

Lyndon

Allerton

Arthur Road

Walker

Hartford

Glacier

Barland

68th St

Katzenberg

Duplainville

Huebner


Montana

Raymond

Douglas

GermantownSW YD

ParkHill

West Darien

ForwardEnergyCenter

NorwichTerminal

Whitewater

Summit

Merrill Hills

OakCreek (COMS 138kV)

SW YD

Brick Church

Cedarsauk

LakeheadDelavan

Alto

BeaverDam East

St Rita

Balsam

MilwaukeeCTY SW YD

Berryville

Bemis T42

Tiger

Bemis T41

LakeheadDelavan T2

Creekview

Oakview

Mt. Pleasant

State Line Sub

Juneautown

Zone 5

La

ke

Mi c

higan


5

3

4

2

6

7

1

atcllc.com

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

n Owner and operator of approximately 9,600 miles of transmission line and more than 560 substations

n Meeting electric needs of more than five million people in 72 counties in four states: Wisconsin, Michigan, Minnesota and Illinois

n $4.7 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

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

Would you like a speaker from ATC to address your group? Give us a call, toll‑free, at (866) 899‑3204, ext. 8679.

P.O. Box 47Waukesha, WI 53187‑0047

10‑year transmission system assessment€¦ · atc, itc midwest llc and dairyland power...

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