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Zone 3 South Central/Southwest Wisconsin and North Central Illinois
October 2009
An excerpt from ATC’s
2009
10-Year Transmission System AssessmentProposals to ensure
n Electric system reliability
n Access to low-cost sources of power
n Access to renewable energy
www.atc10yearplan.com
ColumbiA
CrAwford (southern portion)
dAne
dodge
grAnT
green
iowA
lAfAYeTTe
JefferSon
riChlAnd
roCk
SAuk
wAlworTh
winnebAgo, ill.(northern portion)
1
Planning for future reliability American Transmission Co. was formed in 2001 to plan, permit, build, own, operate and maintain a high-voltage electric grid that meets the reliability and economic needs of our customers. Our planners continually conduct engineering studies on the electric transmission system looking for potential problems that may affect the future performance of the system. Our studies identify and prioritize future projects needed to improve the adequacy and reliability of the electric transmission system and meet evolving public priorities for increased availability of renewable generation.
Many projects serve to increase customer access to low-cost generation, which can reduce the cost of serving load in our footprint. In certain cases, expected economic benefits may be the primary driver of a project. Such is the case with our Paddock-Rockdale 345-kV line in southern Wisconsin. It is the first of its kind in the Midwest – while the line will enhance reliability, economics drove the decision to build. Local electric utilities will save through improved access to the wholesale electric market, and those savings will be passed on to end-use electric customers.
Whatever the need, we select best-value projects that resolve multiple system issues, and we do so in a transparent, collaborative process. We bring people into the process, engaging stakeholders in transmission discussion. We believe this open collaboration is critical to efficiently and economically meet renewable portfolio standards in the region. To that end, we are leading and participating in about a dozen regional and intra-regional studies and initiatives. We also are continuing to work with stakeholders in identifying projects that provide economic
benefits and upgrades that could improve access to lower-cost sources of power inside and outside our service territory.
In this, our ninth year of producing a 10-year forecast of transmission system needs, our focus remains on maintaining the adequacy and reliability of the system to meet the current and future needs of our customers. However, this is the first year that we have included asset renewal projects in the Assessment. While our reliability performance data indicates that our system is performing well, we are placing increased emphasis on managing the risk of aging infrastructure. Our approach to work that traditionally has been called maintenance is moving from a time-based program to a more-efficient process that is informed by performance analysis and operational experience.
The 2009 Assessment covers the years 2010 to 2019, and identifies $2.5 billion in necessary transmission system improvements. The total includes $1 billion for transmission network upgrades specifically described in this report, along with $1.5 billion in interconnection and asset renewal projects, infrastructure replacements and relocations, and other smaller network reliability improvements.
While the cost estimate in our 2009 Assessment is slightly less than the $2.7 billion identified in last year’s report, we may increase our overall 10-year capital spending because of increased focus on regional transmission support to move renewable generation to areas where the power is needed. With more than $2.1 billion invested in the system since 2001, we have become a recognized, national leader in planning, permitting and building electric transmission infrastructure.
Cost estimate of system improvements 2005 2006 2007 2008 2009
Total 10-Year Capital Cost $3.4B $3.1B $2.8B $2.7B $2.5b
Helping to keep the lights on, businesses running and communities strong™
2
Electric System Overviewincreases expected in population, employmentPopulation in Zone 3 is projected to grow about 1 percent annually between now and 2019, 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.
higher-than-average demand anticipatedElectric load is expected to grow approximately 2.4 percent annually through 2019 for all of Zone 3. Demand in Dane County is projected to grow at an above-average rate for the ATC system. High demand coupled with generation retirements, concerns about the age and high cost of remaining generators, and stress on the transmission lines that are critical for importing power to Dane County will continue to increase.
South Central/Southwest wisconsin and north Central illinois – Zone 3
Transmission is the vital link in bringing power to communitiesTransmission lines move electricity at high voltages over long distances – from power plants to communities
where local utilities deliver power to homes and businesses via distribution lines. A reliable transmission network
provides access to many sources of power, whether they are local or regional. having multiple paths to get power
from producers to consumers lessens the chance that they will experience service interruptions. with an increasing
emphasis on renewable energy, transmission system planning will become even more important to put the power
of wind on the wires.
www.atc10yearplan.com
Eden
Okee
Alto
Elmo
Dane
Lodi
Troy
Tokay
LaMar
South
Arena
Eagle
Burke
Rewey
Syene
Miner
McCue
Zenda
Wiota
Zobel
Avoca
Cooney
Waupun
Viking
Kieler
Sharon
Wingra
Auburn
Summit
Nishan
Seneca
Wilcox
London
Blount
Verona
Island
Benton
Barton
Sussex
Turtle
Marine
Pflaum
Ruskin
Roeder
Oregon
Potosi
Elkhorn
Bird St
Mendota
Rubicon
Traxler
Muscoda
Glacier
Macy St
TibbitsRussell
Sanborn
Hubbard
Horicon
Metomen
Cambria
Kegonsa
Gateway
Trienda
Femrite
Mauston
Wonewoc
Sunrise
Venture
Portage
Baraboo
Forward
Delavan
Brandon
Wauzeka
Academy
Paddock
Hampden
AGA Gas
BelmontHillman
Waukesha
Park Ave
Rockdale
Montello
Deforest
Finnegan
Boscobel
Oakfield
Parkview
Cranston
Boxelder
Brooklyn
Kirkwood
Koch Oil
Poynette
Merrimac
Artesian
Tichigan
Ohmstead
Hartford
Walworth
American
Hillside
Mayville
Colorado
Huiskamp
Moore St
Brisbois
Arcadian
Markesan
Endeavor
Kilbourn
Edgewood
Randolph
Tripp Rd
Sprecher
Brodhead
Westport
Richland
Fox Hills
Morris St
Rosendale
Dana Corp
Footville
Ledgeview
RCEC Shaw
Reiner Rd
Birchwood
DPC Elroy
Lancaster
La Pointe
Arlington
ACEC Glen
Lone Rock
Gran Grae
Cassville
Butternut
Sheepskin
Idle Hour
Browntown
Cuba City
Center St
Cambridge
Gaston Rd
Reedsburg
Hillsboro
Mukwonago
JeffersonMcFarland
Lands End
Sadoff Co
Stoughton
Mazomanie
Lafayette
Colley Rd
Fitchburg
Rock River
East Towne
Shullsburg
Hustisford
West Towne
Darlington
Hickory St
DPC LaMont
Blue River
Glen Haven
Burlington
Scot Forge
North Side
Eagle View
DPC Argyle
Fall River
Katzenberg
Dell Creek
Bark River
Christiana
Bass Creek
Blacksmith
Dodgeville
Gays Mills
Whitewater
Walnut GIS
Belleville
Timberlane
New Glarus
Loganville
Lake Delton
Rienzi Road
BOC Grasses
Hooterville
St Lawrence
Willow Lawn
Cobblestone
Waupun Main
RCEC Center
Sun Prairie
Dam Heights
Bluff Creek
West Darien
East Beloit
Sugar Creek
Orfordville
Black Earth
King (king)
Lake Geneva
RCEC Newark
DPC Gratiot
Bloomington
Pardeeville
Manley Sand
Rock Branch
Air Liquide
Arthur Road
ACEC Roslin
Hamilton St
Mount Horeb
James Olson
Spring Brook
RCEC Harmony
East Rockton
Butler Ridge
Williams Bay
Stoney Brook
RCEC Fulton
Yahara River
Sauk Prairie
Spring Green
DPC Stoneman
Brick Church
ACEC Calamus
Union Center
Spring Grove
Shirland Ave
Cross Plains
ACEC Chateau
Duplainville
ACEC Cambria
Neenah Creek
North Monroe
South Monroe
Rock Springs
West Mauston
Concord SW YD
Fort Atkinson
Mineral Point
North Madison
RCEC Bradford
Pioneer(ALTE)
Boscobel Muni
Cottage Grove
Cross Country
Business Park
ACEC Lewiston
Merrill Hills
Albany (ALTE)
Pleasant View
Bristol (ALTE)
RCEC LaPrairieBrodhead North
Wyoming Valley
North Randolph
Saunders Creek
Monroe Central
Hilltop (ALTE)
Mercury Marine
Stoughton East
Blanchardville
New Hollandale
Clinton (ALTE)
Columbus South
Lyndon Station
DPC Shullsburg
ACEC Winnebago
Colloday Point
Brodhead South
Dorset Corners
University (WE)
DPC Platteville
Crawfish River
Badger Pump STA
Pheasant Branch
Pleasant Valley
Evansville Muni
Fox Lake (ALTE)
North Stoughton
Centennial Park
Cottonwood (WE)
Columbus (ALTE)
Division Street
Milwaukee Valve
Twin Lakes (WE)
Mcgregor (ALTE)
DPC Bell Center
ACEC Doylestown
Beaver Dam East
Columbus Muni 1
Stoughton South
Brodhead SW STA
Lakehead Delavan
North Beaver Dam
RCEC Orfordville
Brodhead Central
Lakehead Portage
Tower Substation
Northwest Beloit
Portage Ind Park
Juneau Northside
Mackford Prairie
Caledonia (ALTE)Horicon Ind Park
South Beaver Dam
Lakehead Waterloo
Beaver Dam 3rd St
Green Lake SW STA
New London (ALTW)
North Lake Geneva
Pine River (ALTE)
South Lake Geneva
Southwest Delavan
Monticello (ALTE)
Lakehead Cambridge
Summit Lake (ALTW)
Nelson Dewey SW YD
DPC Lyndon Station
Jennings Rd SW STA
Stage Coach SW STA
Rio Pumping Station
Lodi Industrial Park
Prairie Du Sac Plant
Columbia SW YD (ALTE)
Mazomainie Industrial
Prairie Du Sac 9th St
Forward Energy Center
Kettle Morraine (ALTE)
Blackhawk SW YD (ALTE)
Boscobel Muni Eastside
Lancaster Distribution
Wisconsin Dells Muni 2
Badger Ordinance Works
North East Mount Horeb Muni
PewaukeeMadison
Fitchburg
Delafield
Portage
Steuben Watertown
Janesville
Beloit
Pewaukee
Waukesha
Fond du Lac
West Bend
Elkhorn
Sun Prairie
Sussex
Delavan
Middleton
Hartford
Baraboo
Twin Lakes
Waunakee
Monroe
Lake Delton
Wauzeka
Burlington
Beaver Dam
HartlandOconomowoc
Jefferson
De Forest
Reedsburg
Bell Center
Slinger
New Berlin
Milton
Chenequa
Mauston
Lake Geneva
Whitewater
Verona
Horicon
Waterloo
Germantown
Gays Mills
Eastman
Platteville
Oregon Stoughton
Viroqua
Wales
Prairie du Chien
Columbus
Mukwonago
Fort Atkinson
East Troy
Avoca
Merton
Edgerton
Lake Mills
Rio
Elroy
Mayville
Doylestown
Dodgeville
McFarland
Westby
Lodi
Lancaster
Poynette
Richland Center
Waupun
Potosi
Lomira
Boscobel
Williams Bay
Ferryville
Waterford
Big Bend
Markesan
Soldiers Grove
Montello
Eagle
Jackson
Juneau
Dane
Mount Horeb
Mineral Point
Evansville
Pardeeville
North Prairie
Marshall
Darien
Genoa City
Arena
Albany
Nashotah
Clinton
Kingston
Cobb
Oconomowoc Lake
Wyocena
Sauk City
Readstown
Fox Lake
Cottage Grove
La Crosse
Palmyra
Walworth
Johnson Creek
Lowell
Merrimac
Lynxville
Plain
Oxford
Wisconsin Dells
Sullivan Dousman
Ontario
Kewaskum
Barneveld
Hillsboro
Fennimore
Sharon
Lyndon Station
Cambria
Cashton
Ridgeway
Belleville
Wilton
DeerfieldHighland
New Glarus
Mazomanie
Viola
La Farge
Benton
Bagley
Friesland
Oakfield
Footville
Linden
Rosendale
Lone Rock
Monticello
Orfordville
Muscoda
Wonewoc
Shullsburg
Eden
Rock Springs
Darlington
Spring Green
Theresa
Hazel Green
Cross Plains
Cuba City
Cassville
De Soto
Kendall
Mount Sterling
Bloomington
Hustisford
Cazenovia
Brandon
Browntown
Argyle
Randolph
Lime Ridge
Coon Valley
Gratiot
Campbellsport
Fairwater
Livingston
Dickeyville
Endeavor
Rewey
Boaz Arlington
Blue River
Belmont
Iron Ridge
Hollandale
Cambridge
Union Center
South Wayne
Brooklyn
Reeseville
North Freedom
Melvina
Chaseburg
Montfort
Black Earth
Blue Mounds
Yuba
Rochester
Lac La Belle
La Valle
Ironton
Tennyson
Marquette
Norwalk
Brownsville
Patch Grove
Clyman
RockdaleMount Hope
Kekoskee
Blanchardville
Woodman
Loganville
St. Cloud
D a n e
G r a n t
S a u k
I o w a
R o c k
D o d g e
V e r n o n
G r e e n
C o l u m b i a
L a f a y e t t e
R i c h l a n d
C r a w f o r d
W a l w o r t h
J e f f e r s o n
W a u k e s h a
F o n d d u L a c
J u n e a uM o n r o e
W a s h i n g t o n
A d a m s M a r q u e t t eG r e e n L a k e
R a c i n e
L a C r o s s e
K e n o s h a
S h e b o y g a n
Fen Oak
Cottage Grove
3
Transmission system characteristics in Zone 3ATC delivers power in Zone 3 with various transmission facilities including:
n a north-south 345-kV line from Illinois extending to Columbia Power Plant
n a north-south 345-kV line from Illinois extending to Paddock Substation
n an east-west 345-kV line from Fond du Lac to Columbia Power Plant and
n 138-kV and 69-kV facilities throughout the remainder of the zone.
There are a number of transmission system performance issues in Zone 3 including voltage instability, limited import capability, overloaded lines and equipment, and low system voltages throughout the zone. The causes of these emerging problems include steady or rapid growth in certain areas, import capability from Illinois, new power plants and different generation dispatch scenarios.
At the start of our Assessment process in October 2008 the Nelson Dewey third generator was deemed likely to move forward, but in early 2009, the generator was withdrawn from the queue. We performed additional analyses to determine the impact of that action, and determined the withdrawal of the third generator and its associated transmission projects did not cause significant impact on the transmission system in Zone 3.
Transmission system limitations in Zone 3In the analysis of Zone 3, we identified low voltages and transmission facility overloads. Low voltages are particularly serious in the Spring Green, Jefferson, Milton and Brodhead areas. Many overloads on 138-kV and 69-kV facilities throughout Zone 3 are current or emerging concerns.
Electric load growth in Dodge and Walworth counties is precipitating the need for major new 138-kV line reinforcements in those areas in the 2012-2018 timeframe. Load growth in southwestern Wisconsin also will necessitate reinforcements to the transmission system in the 2009-2016 timeframe. In addition, the potential for voltage collapse and major 138-kV line thermal overloads in the Madison area is emerging and will require significant transmission reinforcements within the next 10 years.
System Limitations South Central/Southwest wisconsin and north Central illinois – Zone 3DANE
SAUK COLUMBIA
LAFAYETTE GREEN ROCK WALWORTH
JEFFERSON
DODGE CRAWFORD
IOWA
GRANT
RICHLAND
WINNEBAGO, ILL
Eden
Okee
Alto
Elmo
Dane
Lodi
Troy
Tokay
LaMar
South
Arena
Eagle
Burke
Rewey
Syene
Miner
McCue
Zenda
Wiota
Zobel
Avoca
Cooney
Waupun
Viking
Kieler
Sharon
Wingra
Auburn
Summit
Nishan
Seneca
Wilcox
London
Blount
Verona
Island
Benton
Barton
Sussex
Turtle
Marine
Pflaum
Ruskin
Roeder
Oregon
Potosi
Elkhorn
Bird St
Mendota
Rubicon
Traxler
Muscoda
Glacier
Macy St
TibbitsRussell
Sanborn
Hubbard
Horicon
Metomen
Cambria
Kegonsa
Gateway
Trienda
Femrite
Mauston
Wonewoc
Sunrise
Venture
Portage
Baraboo
Forward
Delavan
Brandon
Wauzeka
Academy
Paddock
Hampden
AGA Gas
BelmontHillman
Waukesha
Park Ave
Rockdale
Montello
Deforest
Finnegan
Boscobel
Oakfield
Parkview
Cranston
Boxelder
Brooklyn
Kirkwood
Koch Oil
Poynette
Merrimac
Artesian
Tichigan
Ohmstead
Hartford
Walworth
American
Hillside
Mayville
Colorado
Huiskamp
Moore St
Brisbois
Arcadian
Markesan
Endeavor
Kilbourn
Edgewood
Randolph
Tripp Rd
Sprecher
Brodhead
Westport
Richland
Fox Hills
Morris St
Rosendale
Dana Corp
Footville
Ledgeview
RCEC Shaw
Reiner Rd
Birchwood
DPC Elroy
Lancaster
La Pointe
Arlington
ACEC Glen
Lone Rock
Gran Grae
Cassville
Butternut
Sheepskin
Idle Hour
Browntown
Cuba City
Center St
Cambridge
Gaston Rd
Reedsburg
Hillsboro
Mukwonago
JeffersonMcFarland
Lands End
Sadoff Co
Stoughton
Mazomanie
Lafayette
Colley Rd
Fitchburg
Rock River
East Towne
Shullsburg
Hustisford
West Towne
Darlington
Hickory St
DPC LaMont
Blue River
Glen Haven
Burlington
Scot Forge
North Side
Eagle View
DPC Argyle
Fall River
Katzenberg
Dell Creek
Bark River
Christiana
Bass Creek
Blacksmith
Dodgeville
Gays Mills
Whitewater
Walnut GIS
Belleville
Timberlane
New Glarus
Loganville
Lake Delton
Rienzi Road
BOC Grasses
Hooterville
St Lawrence
Willow Lawn
Cobblestone
Waupun Main
RCEC Center
Sun Prairie
Dam Heights
Bluff Creek
West Darien
East Beloit
Sugar Creek
Orfordville
Black Earth
King (king)
Lake Geneva
RCEC Newark
DPC Gratiot
Bloomington
Pardeeville
Manley Sand
Rock Branch
Air Liquide
Arthur Road
ACEC Roslin
Hamilton St
Mount Horeb
James Olson
Spring Brook
RCEC Harmony
East Rockton
Butler Ridge
Williams Bay
Stoney Brook
RCEC Fulton
Yahara River
Sauk Prairie
Spring Green
DPC Stoneman
Brick Church
ACEC Calamus
Union Center
Spring Grove
Shirland Ave
Cross Plains
ACEC Chateau
Duplainville
ACEC Cambria
Neenah Creek
North Monroe
South Monroe
Rock Springs
West Mauston
Concord SW YD
Fort Atkinson
Mineral Point
North Madison
RCEC Bradford
Pioneer(ALTE)
Boscobel Muni
Cottage Grove
Cross Country
Business Park
ACEC Lewiston
Merrill Hills
Albany (ALTE)
Pleasant View
Bristol (ALTE)
RCEC LaPrairieBrodhead North
Wyoming Valley
North Randolph
Saunders Creek
Monroe Central
Hilltop (ALTE)
Mercury Marine
Stoughton East
Blanchardville
New Hollandale
Clinton (ALTE)
Columbus South
Lyndon Station
DPC Shullsburg
ACEC Winnebago
Colloday Point
Brodhead South
Dorset Corners
University (WE)
DPC Platteville
Crawfish River
Badger Pump STA
Pheasant Branch
Pleasant Valley
Evansville Muni
Fox Lake (ALTE)
North Stoughton
Centennial Park
Cottonwood (WE)
Columbus (ALTE)
Division Street
Milwaukee Valve
Twin Lakes (WE)
Mcgregor (ALTE)
DPC Bell Center
ACEC Doylestown
Beaver Dam East
Columbus Muni 1
Stoughton South
Brodhead SW STA
Lakehead Delavan
North Beaver Dam
RCEC Orfordville
Brodhead Central
Lakehead Portage
Tower Substation
Northwest Beloit
Portage Ind Park
Juneau Northside
Mackford Prairie
Caledonia (ALTE)Horicon Ind Park
South Beaver Dam
Lakehead Waterloo
Beaver Dam 3rd St
Green Lake SW STA
New London (ALTW)
North Lake Geneva
Pine River (ALTE)
South Lake Geneva
Southwest Delavan
Monticello (ALTE)
Lakehead Cambridge
Summit Lake (ALTW)
Nelson Dewey SW YD
DPC Lyndon Station
Jennings Rd SW STA
Stage Coach SW STA
Rio Pumping Station
Lodi Industrial Park
Prairie Du Sac Plant
Columbia SW YD (ALTE)
Mazomainie Industrial
Prairie Du Sac 9th St
Forward Energy Center
Kettle Morraine (ALTE)
Blackhawk SW YD (ALTE)
Boscobel Muni Eastside
Lancaster Distribution
Wisconsin Dells Muni 2
Badger Ordinance Works
North East Mount Horeb Muni
PewaukeeMadison
Fitchburg
Delafield
Portage
Steuben Watertown
Janesville
Beloit
Pewaukee
Waukesha
Fond du Lac
West Bend
Elkhorn
Sun Prairie
Sussex
Delavan
Middleton
Hartford
Baraboo
Twin Lakes
Waunakee
Monroe
Lake Delton
Wauzeka
Burlington
Beaver Dam
HartlandOconomowoc
Jefferson
De Forest
Reedsburg
Bell Center
Slinger
New Berlin
Milton
Chenequa
Mauston
Lake Geneva
Whitewater
Verona
Horicon
Waterloo
Germantown
Gays Mills
Eastman
Platteville
Oregon Stoughton
Viroqua
Wales
Prairie du Chien
Columbus
Mukwonago
Fort Atkinson
East Troy
Avoca
Merton
Edgerton
Lake Mills
Rio
Elroy
Mayville
Doylestown
Dodgeville
McFarland
Westby
Lodi
Lancaster
Poynette
Richland Center
Waupun
Potosi
Lomira
Boscobel
Williams Bay
Ferryville
Waterford
Big Bend
Markesan
Soldiers Grove
Montello
Eagle
Jackson
Juneau
Dane
Mount Horeb
Mineral Point
Evansville
Pardeeville
North Prairie
Marshall
Darien
Genoa City
Arena
Albany
Nashotah
Clinton
Kingston
Cobb
Oconomowoc Lake
Wyocena
Sauk City
Readstown
Fox Lake
Cottage Grove
La Crosse
Palmyra
Walworth
Johnson Creek
Lowell
Merrimac
Lynxville
Plain
Oxford
Wisconsin Dells
Sullivan Dousman
Ontario
Kewaskum
Barneveld
Hillsboro
Fennimore
Sharon
Lyndon Station
Cambria
Cashton
Ridgeway
Belleville
Wilton
DeerfieldHighland
New Glarus
Mazomanie
Viola
La Farge
Benton
Bagley
Friesland
Oakfield
Footville
Linden
Rosendale
Lone Rock
Monticello
Orfordville
Muscoda
Wonewoc
Shullsburg
Eden
Rock Springs
Darlington
Spring Green
Theresa
Hazel Green
Cross Plains
Cuba City
Cassville
De Soto
Kendall
Mount Sterling
Bloomington
Hustisford
Cazenovia
Brandon
Browntown
Argyle
Randolph
Lime Ridge
Coon Valley
Gratiot
Campbellsport
Fairwater
Livingston
Dickeyville
Endeavor
Rewey
Boaz Arlington
Blue River
Belmont
Iron Ridge
Hollandale
Cambridge
Union Center
South Wayne
Brooklyn
Reeseville
North Freedom
Melvina
Chaseburg
Montfort
Black Earth
Blue Mounds
Yuba
Rochester
Lac La Belle
La Valle
Ironton
Tennyson
Marquette
Norwalk
Brownsville
Patch Grove
Clyman
RockdaleMount Hope
Kekoskee
Blanchardville
Woodman
Loganville
St. Cloud
D a n e
G r a n t
S a u k
I o w a
R o c k
D o d g e
V e r n o n
G r e e n
C o l u m b i a
L a f a y e t t e
R i c h l a n d
C r a w f o r d
W a l w o r t h
J e f f e r s o n
W a u k e s h a
F o n d d u L a c
J u n e a uM o n r o e
W a s h i n g t o n
A d a m s M a r q u e t t eG r e e n L a k e
R a c i n e
L a C r o s s e
K e n o s h a
S h e b o y g a n
Fen Oak
Cottage Grove
4
Low voltagesOverloaded facilityNew generation/stabilityTransmission needed for load growthTransmission service limiter
System Limitations
1
2 46
78
9
10
12
13
14
T
T
T
C
C
C
C
C
C
T
T
T
T
T
T
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM SM
SM
SMSM
T-D
C
CC
C
C
C
C
C
C
C
C
C
C
C
C
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
Eden
Okee
Alto
Elmo
Dane
Lodi
Troy
Tokay
LaMar
South
Syene
Arena
Eagle
Burke
Rewey
Miner
McCue
Zenda
Wiota
Zobel
Avoca
Cooney
Waupun
Viking
Kieler
Sharon
Auburn
Summit
Nishan
Seneca
Wilcox
London
Verona
Island
Benton
Barton
Sussex
TurtleMarine
Pflaum
Ruskin
Roeder
Oregon
Potosi
Elkhorn
Bird St
Rubicon
Traxler
Muscoda
Glacier
Macy St
TibbitsRussell
Sanborn
HubbardHoricon
Metomen
Cambria
Kegonsa
Trienda
Femrite
Mauston
Wonewoc
Sunrise
Venture
Portage
Baraboo
Forward
Delavan
Brandon
Wauzeka
Academy
Paddock
Hampden
Belmont
Hillman
Waukesha
Park Ave
Rockdale
Montello
Deforest
Finnegan
Boscobel
Oakfield
Cranston
Boxelder
Brooklyn
Kirkwood
Koch Oil
Poynette
Merrimac
Artesian
Tichigan
Ohmstead
Hartford
Walworth
American
Hillside
Mayville
Colorado
Huiskamp
Moore St
Brisbois
MarkesanEndeavor
Kilbourn
Edgewood
Randolph
Tripp Rd
Sprecher
Brodhead
Westport
Richland
Morris St
Rosendale
Dana Corp
Footville
Ledgeview
RCEC Shaw
Reiner Rd
Birchwood
DPC Elroy
Lancaster
La Pointe
Arlington
ACEC Glen
Lone Rock
Gran Grae
Cassville
Butternut
Sheepskin
Idle Hour
Browntown
Cuba City
Center St
Cambridge
Gaston Rd
Reedsburg
Hillsboro
Mukwonago
JeffersonMcFarland
Lands End
Sadoff Co
Stoughton
Mazomanie
Lafayette
Colley Rd
Fitchburg
Rock River
East Towne
Shullsburg
Hustisford
West Towne
Darlington
Hickory St
DPC LaMont
Blue River
Glen Haven
Burlington
Scot Forge
North Side
Eagle View
DPC Argyle
Fall River
Katzenberg
Dell Creek
Bark River
Christiana
Bass Creek
Blacksmith
Dodgeville
Gays Mills
Whitewater
Walnut GIS
Belleville
Timberlane
New Glarus
Loganville
BOC Grasses
Lake Delton
Loch Mirror
Hooterville
St Lawrence
Willow Lawn
Cobblestone
Waupun Main
RCEC Center
Dam Heights
Bluff Creek
West Darien
East Beloit
Sugar Creek
Orfordville
Black Earth
King (king)
Lake Geneva
RCEC Newark
DPC Gratiot
Bloomington
Pardeeville
Manley Sand
Rock Branch
Air Liquide
Arthur Road
ACEC Roslin
Hamilton St
Mount Horeb
James Olson
Spring Brook
East Rockton
Butler Ridge
Williams Bay
Stoney Brook
RCEC Fulton
Yahara River
Sauk Prairie
Spring Green
DPC Stoneman
ACEC Calamus
Union Center
Spring Grove
Shirland Ave
Cross Plains
Milton Lawns
ACEC Chateau
Duplainville
ACEC Cambria
Neenah Creek
North Monroe
South Monroe
Rock Springs
West Mauston
Concord SW YD
Fort Atkinson
Mineral Point
North Madison
RCEC Bradford
Pioneer(ALTE)
Boscobel Muni
Cottage Grove
Cross Country
Business Park
ACEC Lewiston
Merrill Hills
Albany (ALTE)
Pleasant View
Bristol (ALTE)RCEC LaPrairie
Brodhead North
Wyoming Valley
North Randolph
Saunders Creek
ACEC Friesland
Monroe Central
Hilltop (ALTE)
Mercury Marine
Stoughton East
Blanchardville
New Hollandale
Clinton (ALTE)
Columbus South
Lyndon Station
DPC Shullsburg
ACEC Winnebago
Colloday Point
Brodhead South
Dorset Corners
University (WE)
DPC Platteville
Crawfish River
Badger Pump STA
Evansville Muni
Fox Lake (ALTE)
Centennial Park
Cottonwood (WE)
Columbus (ALTE)
Waunakee SW STA
Milwaukee Valve
Twin Lakes (WE)
Mcgregor (ALTE)
DPC Bell Center
ACEC Doylestown
Beaver Dam East
Columbus Muni 1
Stoughton South
Brodhead SW STA
Lakehead Delavan
North Beaver Dam
Brodhead Central
Lakehead Portage
Tower Substation
Northwest Beloit
Juneau Northside
Mackford Prairie
Caledonia (ALTE)
Horicon Ind Park
South Beaver Dam
Lakehead Waterloo
Beaver Dam 3rd St
Green Lake SW STA
New London (ALTW)
Pine River (ALTE)
South Lake Geneva
Monticello (ALTE)
Summit Lake (ALTW)
Nelson Dewey SW YD
DPC Lyndon Station
Jennings Rd SW STA
Stage Coach SW STA
Rio Pumping Station
Lodi Industrial Park
Mazomainie Industrial
North Madison 345/138
Forward Energy Center
Kettle Morraine (ALTE)
Lancaster Distribution
Wisconsin Dells Muni 2
Badger Ordinance Works
South Fond Du Lac SW YD
North East Mount Horeb Muni
Fitchburg
Delafield
Steuben
Janesville
Beloit
Pewaukee
Waukesha
Portage
West Bend
Elkhorn
Sun Prairie
Sussex
Delavan
Middleton
Watertown
Hartford
Twin Lakes
Waunakee
Monroe
Lake Delton
Wauzeka
Burlington
Beaver Dam
HartlandOconomowoc
Jefferson
Reedsburg
Bell Center
Slinger
Milton
Chenequa
Mauston
Whitewater
Horicon
Waterloo
Germantown
Gays Mills
Eastman
Platteville
Oregon
Stoughton
Viroqua
Wales
Prairie du Chien
Columbus
Mukwonago
Fort Atkinson
East Troy
Avoca
Merton
Lake Mills
Rio
Elroy
Mayville
Doylestown
Dodgeville
Westby
Lancaster
Poynette
Richland Center
Waupun
Potosi
Lomira
Boscobel
Ferryville
Waterford
Big Bend
Markesan
Soldiers Grove
Montello
Eagle
Jackson
Juneau
Dane
Mount Horeb
Mineral Point
Evansville
Pardeeville
North Prairie
Marshall
Genoa City
Arena
Albany
Nashotah
Clinton
Brodhead
Kingston
Cobb
Sauk City
Readstown
Fox Lake
Cottage Grove
La Crosse
Palmyra
Fall River
Johnson Creek
Lowell
Merrimac
Lynxville
Plain
Oxford
Wisconsin Dells
Sullivan Dousman
Ontario
Kewaskum
Hillsboro
Fennimore
Sharon
Lyndon Station
Cashton
Ridgeway
Belleville
DeerfieldHighland
New Glarus
Viola
La Farge
Benton
Bagley
Oakfield
Linden
Lone Rock
Monticello
Muscoda
Wonewoc
Shullsburg
Eden
Rock Springs
Darlington
Spring Green
Theresa
Hazel Green
Cross Plains
Cuba City
Cassville
De Soto
Kendall
Mount Sterling
Bloomington
Hustisford
Cazenovia
Brandon
Browntown
Argyle
Randolph
Lime Ridge
Coon Valley
Neosho
Gratiot
Campbellsport
Fairwater
Livingston
Dickeyville
Endeavor
Rewey
Boaz Arlington
Blue River
Belmont
Iron Ridge
Hollandale
Cambridge
Union Center
South Wayne
Brooklyn
Reeseville
North Freedom
Melvina
Chaseburg
Black Earth
Blue Mounds
Yuba
Rochester
Lac La Belle
La Valle
Ironton
Tennyson
Norwalk
Brownsville
Patch Grove
Clyman
Mount Hope
Kekoskee
Blanchardville
Woodman
Loganville
St. Cloud
D a n e
G r a n t
S a u k
I o w a
R o c k
D o d g e
V e r n o n
G r e e n
C o l u m b i a
L a f a y e t t e
R i c h l a n d
C r a w f o r d
W a l w o r t h
J e f f e r s o nW a u k e s h a
F o n d d u L a c
J u n e a uM o n r o e
W a s h i n g t o n
A d a m s M a r q u e t t eG r e e n L a k e
R a c i n e
L a C r o s s e
K e n o s h a
Fen OakPewa
Cottage Grove
11
3
5
5
ATC has completed 13 network projects in Zone 3 since the 2008 Assessment, most notably the North Madison-Huiskamp 138-kV line project and the Rock River-Bristol-Elkhorn conversion to 138-kV operation.
Keeping up with the rapidly increasing use of the transmission system in Zone 3 will require continued and close coordination with stakeholders. ATC’s current plans in Zone 3 include more than 45 system reliability and economic projects between 2009 and 2023 to address network issues identified. These projects are in various stages of development. The most notable planned, proposed, provisional and asset renewal projects in Zone 3, along with their projected years of completion and the factors driving the need for the projects, are listed below.
1
2
3
4
5
7
8
9
10
11
12
13
14
6
Project description in-service need driver year
Planned projects
Jefferson-Lake Mills-Stony Brook 2009 Addresses low voltages and overloaded facilities, 138-kV line accommodates T-D interconnection
Oak Ridge-Verona 138-kV line 2010 Improve area voltages and address overloads
Paddock-Rockdale 345-kV line 2010 Improves access to lower cost sources of power
Rockdale-West Middleton 345-kV line 2013 Addresses overloads and low voltages, improves transfer capability to Madison area, averts voltage collapse, lowers system losses
Proposed projects
Replace two overhead Blount-Ruskin 2011 Completion of earlier project per agreement 69-kV lines with one underground 69-kV line with the City of Madison
Verona-Oregon 69-kV line rebuild 2011 Improve area voltages and address overloads
Brodhead-South Monroe 69-kV line rebuild 2011 Improve area voltages and address overloads
Colley Road-Brick Church 69-kV line rebuild 2013 Address overloads and low voltages
Provisional projects
North Lake Geneva-South Lake Geneva 2016 Addresses potential overloads and low voltages, 138-kV line transmission to distribution interconnection
Lake Delton-Birchwood 138-kV line 2017 Addresses overloads and low-voltage issues in Reedsburg Loop
West Middleton-Blount 138-kV line 2017 Addresses overloads and low voltages
Spring Valley-Twin Lakes-South 2018 Addresses overloads and low voltages Lake Geneva 138-kV line
Horicon-East Beaver Dam 138-kV line 2019 Addresses potential overloads and low voltages
Asset renewal projects
Concord-Rubicon 138-kV line rebuild 2013 Improve condition and increase reliability performance of existing line
Transmission projects in Zone 3
South Central/Southwest wisconsin and north Central illinois – Zone 3DANE
SAUK COLUMBIA
LAFAYETTE GREEN ROCK WALWORTH
JEFFERSON
DODGE CRAWFORD
IOWA
GRANT
RICHLAND
WINNEBAGO, ILL
1
2 46
78
9
10
12
13
14
T
T
T
C
C
C
C
C
C
T
T
T
T
T
T
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM SM
SM
SMSM
T-D
C
CC
C
C
C
C
C
C
C
C
C
C
C
C
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
Eden
Okee
Alto
Elmo
Dane
Lodi
Troy
Tokay
LaMar
South
Syene
Arena
Eagle
Burke
Rewey
Miner
McCue
Zenda
Wiota
Zobel
Avoca
Cooney
Waupun
Viking
Kieler
Sharon
Auburn
Summit
Nishan
Seneca
Wilcox
London
Verona
Island
Benton
Barton
Sussex
TurtleMarine
Pflaum
Ruskin
Roeder
Oregon
Potosi
Elkhorn
Bird St
Rubicon
Traxler
Muscoda
Glacier
Macy St
TibbitsRussell
Sanborn
HubbardHoricon
Metomen
Cambria
Kegonsa
Trienda
Femrite
Mauston
Wonewoc
Sunrise
Venture
Portage
Baraboo
Forward
Delavan
Brandon
Wauzeka
Academy
Paddock
Hampden
Belmont
Hillman
Waukesha
Park Ave
Rockdale
Montello
Deforest
Finnegan
Boscobel
Oakfield
Cranston
Boxelder
Brooklyn
Kirkwood
Koch Oil
Poynette
Merrimac
Artesian
Tichigan
Ohmstead
Hartford
Walworth
American
Hillside
Mayville
Colorado
Huiskamp
Moore St
Brisbois
MarkesanEndeavor
Kilbourn
Edgewood
Randolph
Tripp Rd
Sprecher
Brodhead
Westport
Richland
Morris St
Rosendale
Dana Corp
Footville
Ledgeview
RCEC Shaw
Reiner Rd
Birchwood
DPC Elroy
Lancaster
La Pointe
Arlington
ACEC Glen
Lone Rock
Gran Grae
Cassville
Butternut
Sheepskin
Idle Hour
Browntown
Cuba City
Center St
Cambridge
Gaston Rd
Reedsburg
Hillsboro
Mukwonago
JeffersonMcFarland
Lands End
Sadoff Co
Stoughton
Mazomanie
Lafayette
Colley Rd
Fitchburg
Rock River
East Towne
Shullsburg
Hustisford
West Towne
Darlington
Hickory St
DPC LaMont
Blue River
Glen Haven
Burlington
Scot Forge
North Side
Eagle View
DPC Argyle
Fall River
Katzenberg
Dell Creek
Bark River
Christiana
Bass Creek
Blacksmith
Dodgeville
Gays Mills
Whitewater
Walnut GIS
Belleville
Timberlane
New Glarus
Loganville
BOC Grasses
Lake Delton
Loch Mirror
Hooterville
St Lawrence
Willow Lawn
Cobblestone
Waupun Main
RCEC Center
Dam Heights
Bluff Creek
West Darien
East Beloit
Sugar Creek
Orfordville
Black Earth
King (king)
Lake Geneva
RCEC Newark
DPC Gratiot
Bloomington
Pardeeville
Manley Sand
Rock Branch
Air Liquide
Arthur Road
ACEC Roslin
Hamilton St
Mount Horeb
James Olson
Spring Brook
East Rockton
Butler Ridge
Williams Bay
Stoney Brook
RCEC Fulton
Yahara River
Sauk Prairie
Spring Green
DPC Stoneman
ACEC Calamus
Union Center
Spring Grove
Shirland Ave
Cross Plains
Milton Lawns
ACEC Chateau
Duplainville
ACEC Cambria
Neenah Creek
North Monroe
South Monroe
Rock Springs
West Mauston
Concord SW YD
Fort Atkinson
Mineral Point
North Madison
RCEC Bradford
Pioneer(ALTE)
Boscobel Muni
Cottage Grove
Cross Country
Business Park
ACEC Lewiston
Merrill Hills
Albany (ALTE)
Pleasant View
Bristol (ALTE)RCEC LaPrairie
Brodhead North
Wyoming Valley
North Randolph
Saunders Creek
ACEC Friesland
Monroe Central
Hilltop (ALTE)
Mercury Marine
Stoughton East
Blanchardville
New Hollandale
Clinton (ALTE)
Columbus South
Lyndon Station
DPC Shullsburg
ACEC Winnebago
Colloday Point
Brodhead South
Dorset Corners
University (WE)
DPC Platteville
Crawfish River
Badger Pump STA
Evansville Muni
Fox Lake (ALTE)
Centennial Park
Cottonwood (WE)
Columbus (ALTE)
Waunakee SW STA
Milwaukee Valve
Twin Lakes (WE)
Mcgregor (ALTE)
DPC Bell Center
ACEC Doylestown
Beaver Dam East
Columbus Muni 1
Stoughton South
Brodhead SW STA
Lakehead Delavan
North Beaver Dam
Brodhead Central
Lakehead Portage
Tower Substation
Northwest Beloit
Juneau Northside
Mackford Prairie
Caledonia (ALTE)
Horicon Ind Park
South Beaver Dam
Lakehead Waterloo
Beaver Dam 3rd St
Green Lake SW STA
New London (ALTW)
Pine River (ALTE)
South Lake Geneva
Monticello (ALTE)
Summit Lake (ALTW)
Nelson Dewey SW YD
DPC Lyndon Station
Jennings Rd SW STA
Stage Coach SW STA
Rio Pumping Station
Lodi Industrial Park
Mazomainie Industrial
North Madison 345/138
Forward Energy Center
Kettle Morraine (ALTE)
Lancaster Distribution
Wisconsin Dells Muni 2
Badger Ordinance Works
South Fond Du Lac SW YD
North East Mount Horeb Muni
Fitchburg
Delafield
Steuben
Janesville
Beloit
Pewaukee
Waukesha
Portage
West Bend
Elkhorn
Sun Prairie
Sussex
Delavan
Middleton
Watertown
Hartford
Twin Lakes
Waunakee
Monroe
Lake Delton
Wauzeka
Burlington
Beaver Dam
HartlandOconomowoc
Jefferson
Reedsburg
Bell Center
Slinger
Milton
Chenequa
Mauston
Whitewater
Horicon
Waterloo
Germantown
Gays Mills
Eastman
Platteville
Oregon
Stoughton
Viroqua
Wales
Prairie du Chien
Columbus
Mukwonago
Fort Atkinson
East Troy
Avoca
Merton
Lake Mills
Rio
Elroy
Mayville
Doylestown
Dodgeville
Westby
Lancaster
Poynette
Richland Center
Waupun
Potosi
Lomira
Boscobel
Ferryville
Waterford
Big Bend
Markesan
Soldiers Grove
Montello
Eagle
Jackson
Juneau
Dane
Mount Horeb
Mineral Point
Evansville
Pardeeville
North Prairie
Marshall
Genoa City
Arena
Albany
Nashotah
Clinton
Brodhead
Kingston
Cobb
Sauk City
Readstown
Fox Lake
Cottage Grove
La Crosse
Palmyra
Fall River
Johnson Creek
Lowell
Merrimac
Lynxville
Plain
Oxford
Wisconsin Dells
Sullivan Dousman
Ontario
Kewaskum
Hillsboro
Fennimore
Sharon
Lyndon Station
Cashton
Ridgeway
Belleville
DeerfieldHighland
New Glarus
Viola
La Farge
Benton
Bagley
Oakfield
Linden
Lone Rock
Monticello
Muscoda
Wonewoc
Shullsburg
Eden
Rock Springs
Darlington
Spring Green
Theresa
Hazel Green
Cross Plains
Cuba City
Cassville
De Soto
Kendall
Mount Sterling
Bloomington
Hustisford
Cazenovia
Brandon
Browntown
Argyle
Randolph
Lime Ridge
Coon Valley
Neosho
Gratiot
Campbellsport
Fairwater
Livingston
Dickeyville
Endeavor
Rewey
Boaz Arlington
Blue River
Belmont
Iron Ridge
Hollandale
Cambridge
Union Center
South Wayne
Brooklyn
Reeseville
North Freedom
Melvina
Chaseburg
Black Earth
Blue Mounds
Yuba
Rochester
Lac La Belle
La Valle
Ironton
Tennyson
Norwalk
Brownsville
Patch Grove
Clyman
Mount Hope
Kekoskee
Blanchardville
Woodman
Loganville
St. Cloud
D a n e
G r a n t
S a u k
I o w a
R o c k
D o d g e
V e r n o n
G r e e n
C o l u m b i a
L a f a y e t t e
R i c h l a n d
C r a w f o r d
W a l w o r t h
J e f f e r s o nW a u k e s h a
F o n d d u L a c
J u n e a uM o n r o e
W a s h i n g t o n
A d a m s M a r q u e t t eG r e e n L a k e
R a c i n e
L a C r o s s e
K e n o s h a
Fen OakPewa
Cottage Grove
11
3
5
System Solutions
New substationSupports transmission system expansion
Substation modificationsUpgrades equipment ratings to avert facility overloads
TransformerSupports local growth and improves voltage levels
345-kV transmission line
115-, 138- or 161-kV transmission line
Rebuilt 115- or 138-kV transmission line
Transmission line voltage conversion
69-kV transmission line
Rebuilt 69-kV transmission line
Capacitor bankRelieves low voltages
T-D interconnectionSupports local growth
SUBSTATION KEY TRANSMISSION LINE KEY
6
ATC AT A gLAnCen Formed in 2001 as the first multi-state, transmission-only utility.
n Owner and operator of approximately 9,400 miles of transmission line and 510 substations.
n Meeting electric needs of more than five million people in 72 counties in four states: Wisconsin, Michigan, Minnesota and Illinois.
n $2.5 billion in total assets.
ConTACT mail P.O. Box 47 Waukesha, WI 53187-0047
Toll-free 1-866-899-3204
More detailed information is available at www.atc10yearplan.com
P.O. Box 47Waukesha, WI 53187-0047
P.O. Box 47 n Waukesha, WI 53187-0047 n Toll-free 866.899.3204 n 262.506.6700 n www.atcllc.com
would you like a speaker from ATC to address your group? give us a call, toll-free, at 1.866.899.3204, ext. 6922.
Helping to keep the lights on, businesses running and communities strong™
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