The physical boundaries of Zone 3 and transmission facilities located in Zone 3 are shown in Figure ZS-24.

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1 September 0 0-Year Assessment Zone 3 overview Zone 3 includes the Wisconsin counties of: Columbia Crawford (southern portion) Dane Dodge Grant Green Iowa Lafayette Jefferson Richland Rock Sauk Walworth and Winnebago, Ill. (northern portion) The physical boundaries of Zone 3 and transmission facilities located in Zone 3 are shown in Figure ZS-4. Land use in Zone 3 is a mix of rural, urban and agricultural. The major population centers are the Madison metropolitan area and the Janesville/Beloit area. Zone 3 typically experiences peak demands during the summer months. Manufacturing, food processing, state government and institutional loads are among the largest electricity users in the zone. Demographics Historical and Projected Population The population of the counties in Zone 3 grew at an annual rate of.9% from 00 to 00. The highest growth rate of.% per year and the largest increase in population of 64,400 occurred in Dane County. Population in Zone 3 is projected to grow at.% annually for the 0 to 00 period. From 0 to 00, Dane County is projected to realize the largest increase in population (8,900) and is projected to have the highest growth rate of.7%. Historical and Projected Employment SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3

2 September 0 0-Year Assessment During the same period, the annual employment growth rate was 0.6%. The highest growth rate (.%) and the largest increase in employment (37,800) occurred in Dane County. Employment in Zone 3 is projected to grow at.% annually between 0 and 00. Dane County is projected to realize the largest increase in employment of over 4,000 and the highest growth rate of.4%. Employment Annual Growth Rate Zone Zone 3. Dane, WI. Dane, WI.4 Total Increase Zone 3 4,76 Zone 3 9,406 Dane, WI 37,870 Dane, WI 4,008 Population Annual Growth Rate Zone Zone 3. Dane, WI. Dane, WI.7 Total Increase Zone 3 96,894 Zone 3 3,89 Dane, WI 64,473 Dane, WI 8,97 Zone 3 Environmental Considerations Zone 3 covers the south central and southwestern portions of Wisconsin and the Illinois county of Winnebago. The ecological landscapes in this zone vary from Southeast Glacial Plains in the east through the Central Sand Hills area to areas that are part of the Southwest Savanna and Western Coulee and Ridges landscapes in the west. The eastern portions of the zone generally are level to gently rolling terrain, while the western areas are characterized by the ridges and valleys of the driftless area. SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3

3 September 0 0-Year Assessment The northern and western portions of this zone are located in the Lower Wisconsin River Drainage Basin, and the Mississippi River forms the zone s western boundary. Other portions of this zone are located in the Grant-Platte, Sugar River-Pecatonica, Upper and Lower Rock and Fox Illinois drainage basins. Horicon Marsh National Wildlife Refuge is located in the northeast part of the zone, and the Upper Mississippi River Wildlife and Fish Refuge is located along the zone s western edge. The Baraboo Hills are located in the north-central portion of the zone. The Lower Wisconsin River State Riverway also is found in this zone. Zone 3 electricity demand and generation The coincident peak load forecasts for Zone 3 for 0, 06, 0 and 06 are shown in Table ZS-. The table also shows existing generation, proposed generation based on projected in-service year, and resultant capacity margins (with and without the proposed generation). The table shows that load in Zone 3 is projected to grow at roughly.37 percent annually from 0 through 0. Comparing load with generation (at maximum output) within the zone indicates that Zone 3 has more generation than peak load during peak load periods. However, actual operating experience indicates that during most load periods, Zone 3 is a net importer of power. Zone 3 transmission system issues Key transmission facilities in Zone 3 include: Columbia-North Madison 34-kV lines, Columbia-Rockdale 34-kV line, Paddock-Rockdale 34-kV line, Paddock-Wempletown 34-kV line, Rockdale Wempletown 34-kV line, and 38-kV facilities from the Nelson Dewey Power Plant, around the Madison area, and in the northwest and southeast portions of Zone 3. Key system performance issues in Zone 3 include: Existing contingency thermal overloads on the Fitchburg-Royster 69-kV line, Low voltages for two separate double circuit tower outages in Dane County transmission system calls for reactive support in 0 Maintaining reliability of service to load in and around the Madison area requires that system reinforcements be implemented in the near term. Longer term, a 34-kV source on the west side of Madison will be required, SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 3

4 September 0 0-Year Assessment Load growth in the Rock and Green Counties, along with the mismatch of load to generation in the area, could result in the Monroe area 69-kV network being subjected to unacceptably low voltages and thermal overloads under both normal and contingency conditions in the summer of 0. Rebuilding the 69-kV line 33 from Brodhead to South Monroe will address these issues. Load growth in Green County, west of Rock County and south of Dane County requires one additional 69-kV source into the area. Adding the Bass Creek 38/69- kv transformation will address a number of potential low voltage issues and transformer overloads. Several provisional projects in past 0-Year Assessments found low voltage and thermal overload issues which did not appear in the 0 Assessment. The provisional project in-service dates were retained for now until it can be determined in future assessments that these voltage and thermal issues no longer exist. SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 4

5 September 0 0-Year Assessment Zone 3-0 study results Refer to Table ZS- and Figure ZS-9 Summary of key findings Short term operation procedures are required to address the Fitchburg-Royster 69- kv line overload problems before a permanent transmission solution can be implemented, Maintaining reliability of service to load in and around the Madison area requires that system reactive reinforcements be implemented in the near term. Longer term, a 34-kV source on the west side of Madison will be required, Load growth in the Rock and Green Counties, along with the mismatch of load to generation in the area, could result in the Monroe area 69-kV network being subjected to unacceptably low voltages and thermal overloads under both normal and contingency conditions in the summer of 0. Rebuilding the 69-kV line 33 from Brodhead to South Monroe will address these issues. Load growth in Green County, west of Rock County and south of Dane County requires one additional 69-kV source into the area. Adding the Bass Creek 38/69- kv transformation addresses a number of potential low voltage issues and transformer overloads. In response to some single contingency low voltage problems in Zone 3, a total of 98 MVAR of capacitor banks distributed among the Femrite, Kegonsa and Spring Green substations was deemed to be the most feasible solutions in the 0-0 timeframe. Studies have shown the potential for severe low voltage problems in Dane County area for the loss of certain double circuit tower outages. To address these issues in the near term, one-3.66 MVAR 38-kV Femrite capacitor bank and one-3.66 MVAR 38-kV Kegonsa capacitor bank have been installed. Also in Dane County, the Fitchburg, Cross County, Oak Ridge and Pleasant View 38-kV buses have marginal system intact voltages under certain conditions. The Femrite and Kegonsa capacitor bank projects will also improve potential system intact low voltage limitations. The Fitchburg to Royster 69-kV line is susceptible to thermal overloads and the area experiences low voltages at Syene, Nine Springs, and Pflaum for certain single contingencies. A package of projects was proposed to address these issues. It includes uprating the Fitchburg-Nine Springs 69-kV and Royster-Pflaum 69-kV lines, moving the AGA load to the Royster-Femrite 69-kV line and installing two 6.33 MVAR, 69-kV capacitor banks at the Nine Springs Substation in 03. Prior to the implementation of these projects, a short-term operation procedure including potential load bridging is SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3

6 September 0 0-Year Assessment available. The short-term operation procedure will be evaluated each year until the transmission projects are implemented. ATC and the city of Madison have proposed to bury part of the two Blount-Ruskin 69-kV overhead lines underground. This project was completed in 0. Load growth in the Rock and Green Counties, along with the mismatch of load to generation in the area, will result in unacceptably low voltages in the Monroe area. Under several single contingency conditions, thermal overloads also arise on the kV line sections Brodhead-Spring Grove-Blacksmith-South Monroe. The planned solution to address these issues is to rebuild the Brodhead-South Monroe 69-kV line (33) using 38- kv construction standards and initially operate the line at 69-kV. The Evansville and Brodhead areas are facing unacceptably low voltages under single contingency conditions. A38/69-kV transformer at Bass Creek and the Townline Road Bass Creek 38-kV line uprate have been put in service in 0 to address these problems and provide an additional 69-kV source into Green and Rock Counties. These projects will also allow the delay of a new Brooklyn to Evansville 69-kV line project outside of ATC s 0- year planning horizon. We currently mitigate several of the identified 38-kV low voltages through remote control of the 38/69-kV transformers in the affected areas. In certain instances, transformer load tap changers are adjusted to bring the 38-kV contingency voltages above the planning criteria limits while maintaining the 69-kV bus voltages above criteria limits. This is a balancing act, and as loads continue to grow the process will no longer be effective. No performance limits were exceeded for Category A conditions for all 0 analysis except the high voltage at Darlington 38-kV bus in the 0 minimum load model. The Darlington high voltage issue can be addressed by adjusting the North Monroe 38/69-kV transformer LTC settings. SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 6

7 September 0 0-Year Assessment Zone 3-06 study results Refer to Table ZS- and Figure ZS-0 Summary of key findings Numerous low voltages and line overloads along with the potential for voltage collapse in the Madison area signal the need for another new 34-kV source on the west side of Madison, Low voltage problems were observed in the Boscobel area under single contingency conditions with the Gran Grae 6/69-kV transformer prior outage. Due to 69-kV system load growth in Verona and Spring Green areas, the West Middleton-Stage Coach 69-kV line requires higher capacity. In 009, ATC received the regulatory CPCN approval for the Rockdale-West Middleton (Cardinal) 34-kV line project. This project will address line overloads and low voltage issues in Dane County and is planned to be in-service in 03. ATC Asset Management has determined that currently ATC has no spares for a 6/69-kV transformer installed in the system and the spare equipment lead-time is in excess of year. The provisional project of installing one 8.6 Mvar capacitor bank at Boscobel 69-kV substation and upgrading the existing.4 Mvar bank with an 8.6 MVAR bank is advanced from 09 to 0. The advance is mainly due to single contingency low voltage constraints near Boscobel area observed in the 0 0-Year Assessment with the prior outage of the existing 6/69 kv transformer. Uprating the West Middleton-Stage Coach 69-kV line is needed by 0. It will address potential line overload problems under single contingency conditions. In addition, under the certain transformer prior outage condition, the West Middleton-Stage Coach 69-kV line can be overloaded after another transformer outage. Past 0-Year Assessments found thermal and voltage issues involving the 69-kV loop between North Lake Geneva and Brick Church under contingency conditions. A new 38kV line between North Lake Geneva South Lake Geneva was proposed for 06 to resolve these issues. However, recent load forecast reduction has resulted in ATC delaying the North Lake Geneva South Lake Geneva project in-service date from 06 to 08. This area continues to be under review to determine when the next system additions are warranted. No performance limits were exceeded for Category A conditions for all 06 analysis. SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 7

8 September 0 0-Year Assessment The lead times necessary to implement the corrective plans that are scheduled for 0 through 06 were considered and taken into account prior to assigning an in-service date for each associated project. All of the projects scheduled for the near term planning horizon have an In-service date that matches the Need date, except the following projects: Projects whose Need date precedes the In-service date Uprate Fitchburg-Nine Springs and Royster-Pflaum 69-kV lines, move AGA to the Femrite-Royster 69-kV line and install Nine Springs capacitor bank. The need year is listed as 008. The in-service year is 03. Post-contingency generation dispatch or distribution load bridging will be utilized as an interim mitigation measure to alleviate potential single-contingency thermal and voltage issues. Projects whose In-service date precedes the Need date None Zone 3-0 study results Refer to Table ZS-3 and Figure ZS- Summary of key findings Additional reactive power is needed throughout the Zone 3, The estimated need date for the West Middleton (Cardinal) - Blount 38-kV project is 00; the primary need driver is certain double circuit tower outages, Due to 69-kV system load growth in the Southeast Madison area, the Sycamore- Royster 69-kV line requires higher capacity, Several projects were delayed due to lower load forecast in certain local area In response to low voltages throughout Zone 3, a significant amount of capacitor banks distributed at the Eden, Mazomanie, Concord, Brick Church, Sun Prairie, Dam Heights, and North Monroe substations in the timeframe were deemed to be the preliminary solutions. The in-service dates for some of these capacitor bank projects are delayed mainly due to load forecast reduction in local areas. The new in-service dates are chosen considering both the latest 0 0-Year Assessment need date and previous 0-Year Assessments identified need dates. The Royster-Sycamore 69-kV line is overloaded under single contingency conditions in the 0 summer peak model analysis. The existing provisional Royster-Sycamore line uprate SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 8

9 September 0 0-Year Assessment project is advanced to 08 based on the new results. A potential project alternative to the line uprate is to add a second Femrite transformer. Past 0-Year Assessments found thermal overload issues under single contingency conditions for the existing Spring Green 38/69-kV transformer, the existing Hillman 38/69-kV transformer and the North Monroe-South Monroe 69-kV line. Those issues did not appear in the 0 0-Year Assessment. The past solutions were to install a second transformer at Spring Green, a second transformer at Hillman and uprate the Y87 line in 08. These provisional projects were retained for now until it can be determined in future 0-Year Assessments that these thermal issues truly no longer exist. Due to higher validated line ratings and load forecast reduction in Alliant area, the reliability need date for the Y9 Sun Valley tap-oregon 69-kV line rebuild project is beyond 06 in the 0 TYA analysis. A new in-service date of 00 is chosen mainly based on the preliminary Asset Management need date for rebuilding this line. Past 0-Year Assessments found voltage and thermal issues in the Reedsburg loop. Those issues did not appear in the 0 0-Year Assessment. The past solution was to construct a 38kV line between Lake Delton and Birchwood in 00. This provisional project was retained for now until it can be determined in future 0-Year Assessments that the line is not needed. In the 008 Assessment, the West Middleton 38/69-kV transformers and West Middleton- Blackhawk 69-kV line were observed to be overloaded under single contingency conditions in the 07 timeframe. To address these thermal overloads, a Cardinal to Blount 38-kV line project was being considered. In conjunction with the Rockdale-West Middleton (Cardinal) 34-kV line project (03), the Cardinal-Blount 38-kV line could eliminate the thermal overload issues in the long term and provide additional transfer capability into downtown Madison. In 03, the existing West Middleton substation will be divided into two separate adjacent substations behind the same fence as follows: West Middleton will remain as 69 kv, and Cardinal Substation will encompass 38 and 34-kV portions of the substation. Since the 008 Assessment, the West Middleton (Cardinal) 38/69-kV transformer ratings have been validated with higher ratings. In addition, with the new load forecasts utilized in the 009, 00 and 0 0-Year Assessments, the original needs for the Cardinal-Blount 38-kV project are sliding out of 0-year planning horizon. However, considering the potential severe low voltage problem under certain double circuit tower outage conditions (especially during a major 34-kV line maintenance outage), as a potential long term SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 9

10 September 0 0-Year Assessment solution, it was decided to keep the project in the project table as a provisional 00 project. It is provisional because the justification of the project needs to be confirmed and a project scope needs to be developed. Past 0-Year Assessments have identified the emerging McCue-Lamar and Bass Creek- Footville thermal overloads and voltage issues at the Lamar Substation under singlecontingency conditions. Those issues did not appear in the 0 0-Year Assessment. A second 69-kV line from McCue to Lamar in 07 was being considered as a placeholder to resolve the issues in this area. It was decided to delay this provisional project to 09 for now until it can be determined in future 0-Year Assessments that the project is not needed. In the past, 3 (Colley Road-Brick Church 69-kV line) saw thermal overloads under contingency conditions as well as age and condition issues. The thermal issues were not seen in the 0 0-Year Assessment. The age and condition issues remain and will likely result in a line rebuild in the next 0- years. The project In-Service date was retained at 08 until future 0-Year Assessments assure the need to rebuild for thermal reasons no longer exists. Past 0-Year Assessments determined the Brick Church 38-kV bus could experience low voltages under various contingencies. The provisional project of -4. MVAR 38-kV capacitor banks and -8 MVAR 69-kV capacitor bank at Brick Church would address these issues. While voltage issues were not seen in the Brick Church area, the 07 In- Service date was retained until we can be assured the voltage issues won t return in the next few 0-Year Assessments. Past 0-Year Assessments found thermal and voltage issues in the Lake Geneva area. A provisional project to construct a 38kV line between Spring Valley, in eastern Kenosha County to the Lake Geneva area is still being considered. It is expected the new 38kV line would connect to the proposed North Lake Geneva South Lake Geneva 38kV line. One or two 38/69kV transformers could be installed along the provisional Spring Valley North Lake Geneva line to strengthen the area. Past 0-Year Assessment had the provisional Spring Valley Lake Geneva line being placed in service in 08. The project has been delayed to 09 due to lower load forecasts. For detailed discussions on the Badger-Coulee 34-kV line project and the Dubuque- Spring Green-Cardinal 34-kV line project, please refer to Regional Planning section. No performance limits were exceeded for Category A conditions for all 0 analysis. The lead times necessary to implement the corrective plans that are scheduled for 07 through 0 were considered and taken into account prior to assigning an in-service date SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3 0

11 September 0 0-Year Assessment for each associated project. All of the projects scheduled for the longer term planning horizon have an In-service date that matches the Need date, except the following projects: Projects whose Need date precedes the In-service date None Projects whose In-service date precedes the Need date None Zone 3-06 study results Refer to Table ZS-4 and Figure ZS- Summary of key findings 69-kV lines between West Middleton and Waunakee substations are exceeding their summer emergency ratings under single contingency conditions, Waunakee Industrial Park-Huiskamp 69-kV line is approaching its summer emergency rating under single contingency condition. The 06 results suggest that further study of Zone 3, particularly around Dane County area, is needed to identify an appropriate long-term solution for this area that may be required beyond the year 00. Thermal overloads were observed on the 3 Waunakee - West Port 69-kV line and the 6963 West Middleton-Pheasant Branch 69-kV lines under single contingency conditions. Rebuilding West Middleton-Pheasant Branch 69-kV line with double circuits in 0 could be a potential long term solution to address these two potential constraints. Past 0-Year Assessments determined the Portage Trienda 38-kV line could experience thermal issues under various contingencies. The provisional project was to uprate the line by 0. While thermal issues were not seen with the Portage Trienda line in the 0 0-Year Assessment analysis, the 0 In-Service date was retained until we can be assured the thermal issues won t return in the next few 0-Year Assessments. Past 0-Year Assessments determined that 34/38kV transformation was needed in the North Randolph area to support the area. The provisional project was to construct a 34kV bus at North Randolph and loop the Columbia South Fond du Lac 34kV line into North Randolph. The need for the transformer was not seen in the 0 0-Year Assessment. While need drivers did not appear in this 0-Year Assessment, the 0 In-Service date SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3

12 September 0 0-Year Assessment was retained until we can be assured the area needs won t return in the next few 0-Year Assessments. The provisional project of constructing a Hubbard-East Beaver Dam 38-kV line will address not only several 69-kV thermal overloads, but also the low voltages in the Beaver Dam area for an outage of the North Randolph-North Beaver Dam 38-kV line. While the 0 0-Year Assessment didn t show a need this year, the 00 In-Service date was retained until future 0-Year Assessments indicate the need is no longer there. No performance limits were exceeded for Category A conditions for all 06 analysis. Assessment of Steady State Compliance with NERC Standards The mitigation plans comprised of planned, proposed and provisional projects identified for Zone 3 in this Assessment will allow the ATC system in Zone 3 to meet the steady state portions of NERC standards TPL-00 and TPL-00 in each of the five years 0-06, and for the 07-0 planning horizon. SEPTEMBER 0 REPORT S & STUDY RESULTS Zone 3

13 Table ZS- 0 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 0 Summer Peak Case % of Facility % of Nominal Rating Bus Voltage 0 Minimum Load Case % of Facility % of Nominal Rating Bus Voltage Facility Outage(s) Base case loading criteria exceeded FALSE FALSE System Intact Base case voltage criteria exceeded FALSE FALSE System Intact Council Creek 38-kV bus 89.% - 89.% Council Creek - Petenwell 38-kV line ACEC Badger West - Saratoga 38 KV line ACEC Badger West - Petenwell 38 KV line Saratoga - Petenwell 38-KV line Badger West 38-kV bus 89.3% ACEC Badger West - Saratoga 38 KV line Petenwell 38-kV bus 89.3% ACEC Badger West - Saratoga 38 KV line ACEC Badger West - Petenwell 38 KV line Saratoga - Petenwell 38-KV line Base case loading criteria exceeded FALSE FALSE System Intact Base case voltage criteria exceeded FALSE TRUE System Intact M38 Atlantic 69-kV line 94.6% Chandler Lakehead Tap 69-kV line Masonville Lakehead Tap 69-kV line Gladstone North Bluff 69-kV line Madonville Gladstone 69-kV line 08.% 04.3% 97.3% 97.% M38 Atlantic 38-kV line M38 Atlantic 38-kV line Delta Mead 69-kV line Delta Mead 69-kV line 97.3% Chandler Lakehead 69-kV line Engadine, Newberry, LouPac, Newberry Hospital, Newberry Village, Roberts 69-kV buses North Bluff, Bay View, Mead, Gladstone, Masonville and Lakehead 69-kV buses % Hiawatha Engadine 69-kV line % Delta Mead 69-kV line Mead and Bay View 69-kV buses % Delta Mead 69-kV line Alger Delta, Munising, Alger 69-kV buses % System Intact Atlantic 38-kV bus 3.7% Atlantic M38 38-kV line 3 Base Case Loading Criteria Exceeded FALSE FALSE System Intact 3 Base Case Voltage Criteria Exceeded FALSE TRUE System Intact 3 Royster AGA Gas Tap 69-kV line 09.0% Fitchburg Syene 69-kV line 3 Royster Sycamore 69-kV line 9.% Femrite 38/69-kV transformer 3 Darlington 38-kV bus 0.% System Intact 3 Huiskamp 38-kV bus 90.% 4.8% Huiskamp North Madison 38-kV line 3 Verona 38-kV bus 90.9% 4.6% Verona Oak Ridge 38-kV line Page of

14 Table ZS- 0 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 3 Hubbard and Hustisford 38-kV buses 0 Summer Peak Case % of Facility % of Nominal Rating Bus Voltage 87.% 88.% 88.% 0 Minimum Load Case % of Facility % of Nominal Rating Bus Voltage 90.% 90.% 90.% Facility Outage(s) Rubicon Hustisford 38-kV line Hustisford Hubbard 38-kV line Rubicon Hustisford Hubbard 38-kV line 4 Base case loading criteria exceeded FALSE FALSE System Intact 4 Base case voltage criteria exceeded FALSE FALSE System Intact 4 Sunset Point Pearl Avenue 69-kV line 06.7% Ellinwood th Avenue 69-kV line 06.4% Ellinwood 38/69-kV transformer 3 Base Case Loading Criteria Exceeded FALSE FALSE System Intact Base Case Voltage Criteria Exceeded FALSE TRUE System Intact Albers, Allerton, Hayes, Kenosha, Nicholson, Oak Creek, Pennsylvania, Racine, Ramsey, St. Rita, and Somers 38-kV 0-06.% System Intact buses Maple and Germantown 38-kV buses 9.7% 9.% Maple Saukville 38-kV line Bain 34/38-kV transformer # 08.3% Split Pleasant Prairie 34-kV bus 34 8.% Split Pleasant Prairie 34-kV bus 3 Oak Creek 34/30-kV transformer T89 04% Split Oak Creek 30-kV bus % Split Oak Creek 30-kV bus 67 Arcadian4 Waukesha 38-kV line 98.8% Arcadian6 Waukesha3 38-kV line Arcadian6 Waukesha3 38-kV line 9.7% Arcadian4 Waukesha 38-kV line Split Waukesha 38-kV bus Harbor Kansas 38-kV line 94.8% Kansas Norwich 38-kV line Page of

15 Table ZS- 06 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 06 Summer Peak Case % of Facility % of Nominal Rating Bus Voltage 06 70% Load Case 06 90% Load Case 06 0% Load Case 06 6% High W-E Case % of Facility % of Nominal % of Facility % of Nominal % of Nominal % of Facility % of Nominal % of Facility Rating Rating Bus Voltage Rating Bus Voltage Bus Voltage Rating Bus Voltage Facility Outage(s) Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Base case voltage criteria exceeded FALSE FALSE TRUE FALSE TRUE System Intact Council Creek 38-kV bus 04.9% 0.3% 0.4% System Intact Dartford 69-kV bus % Ripon - Northwest Ripon Tap 69-KV line Metomen - Ripon 69-KV line Petenwell 38/69 KV transformer % 98.%.% ACEC Badger West - Saratoga 38-kV line % % Castle Rock - Quincy ACEC 69-KV line Hilltop - Buckhorn Tap 69-KV line Castle Rock - McKenna 69-kV line McKenna - Quincy ACEC 69-KV line Arpin - Eau Claire 34-kV line King - Eau Claire - Arpin 34-kV line ACEC Badger West - Petenwell 38-kV line % % Arpin - Eau Claire 34-kV line King - Eau Claire - Arpin 34-kV line Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Base case voltage criteria exceeded FALSE TRUE FALSE FALSE FALSE System Intact Mead and Chandler 69-kV buses % System Intact Munising, Alger, Alger-Delta 69-kV buses 0-0.% System Intact Lakota Road -kv bus 0.30% System Intact Indian Lake 69-kV bus 9.0% 9.% 9.6% 9.7% Pleasant Prairie Zion 34-kV line Pleasant Prairie Zion 34-kV line 7 Indian Lake 69-kV capacitor bank Perkins 38-kV capacitor bank Indian Lake 38/69-kV transformer # Indian Lake 38/69-kV transformer # % Indian Lake 38/69-kV transformer # Indian Lake 38/69-kV transformer # Delta Mead 69-kV line Chandler Lakehead Tap 69-kV line Masonville Gladstone 69-kV line Masonville Lakehead Tap 69-kV line 0.3% 97.4% 97.%.8% 96.9% 08.% 0.8% 90.7% 98.8% 08.6% 94.3% 04.7% 0.7% 96.8% 96.7% 4.8% 97.9% 0.% 03.9% 93.4% 0.% Chandler Lakehead Tap 69-kV line Masonville Lakehead Tap 69-kV line Chandler - Lakehead - Masonville 69-kV line 6 Delta Mead 69-kV line M38 Atlantic 69-kV line 96.3% 96.% 00% M38 Atlantic 38-kV line Atlantic 38/69-kV transformer M38 Atlantic 69-kV line 3 Engadine, Newberry, Newberry Hospital, Roberts, LouPac, Newberry Village, Hulbert and Eckerman 69-kV buses % % % Hiawatha Engadine 69-kV line North Bluff, Bay View, Mead, Gladstone, Lakehead, Masonville 69-kV buses % % % % % Delta Mead 69-kV line Empire - Presque Isle 38-kV line 00.6% Split Empire 38-kV bus #3 Escanaba and West 69-kV buses % Delta - West Tap 69-kV line Nordic Mountain 69-kV line 0.0% 0.% Empire Forsyth 38-kV line Plains Arnold 38-kV line Page of 3

16 Table ZS- 06 Limitations and Performance Criteria Exceeded 06 Summer Peak Case 06 70% Load Case 06 90% Load Case 06 0% Load Case 06 6% High W-E Case Planning Criteria Exceeded/Need % of Facility % of Nominal % of Facility % of Nominal % of Facility % of Nominal % of Nominal % of Facility % of Nominal Zone % of Facility Rating Rating Bus Voltage Rating Bus Voltage Rating Bus Voltage Bus Voltage Rating Bus Voltage Facility Outage(s) 3 Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact 3 Base case voltage criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Royster Sycamore 69-kV line 98.% 04.% Femrite 38/69-kV transformer 3 Verona 38-kV bus 89.4% 89.9% 88.8% Verona Oak Ridge 38-kV line 3 Huiskamp 38-kV bus 89.9% 9.7% 90.4% 89.9% 9.7% Huiskamp North Madison 38-kV line 3 Darlington North Monroe 38-kV line 0.0 9% Paddock 34/38-kV transformer Darlington 38/69-kV transformer Darlington DPC Gratiot 69-kV line 3 Eden Mineral Point 69-kV line 9.3% Darlington Lafayette Wind 38-kV line 3 South Monroe Browntown 69-kV line 97.0% Darlington North Monroe 38-kV line 3 Concord 38-kV bus 96.0% System Intact 3 Hubbard and Hustisford 38-kV buses 87.% 88.% 88.% 87.% 87.4% 87.4% 87.% 86.% 86.% 87.% 87.9% 87.9% Rubicon Hustisford 38-kV line Hustisford - Hubbard 38kV line Rubicon - Hustisford - Hubbard 38kV line 4 Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact 4 Base case voltage criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact 4 Manrap Custer 69-kV line 9.4% Dewey Lakefront 69-kV line 4 Lau Road Elkhart Lake 38-kV line 4 Elkhart Lake Saukville 38-kV line 4 Gravesville - Glenview 38-kV line 96.7% 96.7% 96.6% 07.9% 07.9% 0.9% 0.9% 0.9% 96.0% 96.0% 3.6% 3.4% 9.6% 9.6% 9.6% 06.7% 06.7% 06.6% 03.4% 0.9% % Sheboygan Energy Center Grandville 34-kV line Point Beach Sheboygan Energy Center 34-kV line Point Beach 34-kV bus tie - Point Beach 34-kV bus tie - Point Beach Sheboygan Energy Center 34-kV line Sheboygan Energy Center Granville 34-kV line Cypress Arcadian 34-kV line Edgewater Cedarsauk 34-kV line Plus other less severe contingencies Tecumseh Road 38/69 kv Transformer* Tecumseh Road 38/69 kv Transformer Tecumseh Road - Ford Drive tap 69-kV line Ford Drive tap - New Holstein 69-kV line Tecumseh Road - New Holstein 69-kV line* Ellinwood th Avenue 69-kV line Ellinwood 38/69-kV transformer* 4 Sunset Point Pearl Avenue 69-kV line 97.0% 96.9% Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Base case voltage criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Bain 34/38-kV transformer # 8.6% 4.% 8.8% 8.3% 4.6% Split Pleasant Prairie 34-kV bus 34.4% 06.4% 7.% Split Pleasant Prairie 34-kV bus 3 Oak Creek 34/30-kV transformer T89 04.% 04.4% 04.3% Split Oak Creek 30-kV bus 78 0.% 0.9% Split Oak Creek 30-kV bus 67 Arcadian4 Waukesha 38-kV line 97.9% 4.% 30.4% 98.% Arcadian6 Waukesha3 38-kV line Arcadian6 Waukesha3 38-kV line 94.7% 0.% 00.4% 6.3%.7% 9.4% Arcadian4 Waukesha 38-kV line Split Waukesha 38-kV bus Page of 3

17 Table ZS- 06 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 06 Summer Peak Case % of Facility % of Nominal Rating Bus Voltage 06 70% Load Case 06 90% Load Case 06 0% Load Case 06 6% High W-E Case % of Facility % of Nominal % of Facility % of Nominal % of Nominal % of Facility % of Nominal % of Facility Rating Rating Bus Voltage Rating Bus Voltage Bus Voltage Rating Bus Voltage 96.% 99.6% 94.9% Facility Outage(s) Split Arcadian 34-kV bus Arcadian 34/38-kV transformer #3 Arcadian 34-kV bus outage Arcadian 34/38-kV transformer # Bain Kenosha 38-kV line 00.3% Pleasant Prairie Zion 34-kV line Pleasant Prairie Zion 34-kV line 96.8% Zion Arcadian 34-kV line 7 Granville 34/38-kV transformer # 08.% Split Granville 34-kV bus 3 Harbor Kansas 38-kV line 0.4% 0.3% 0.% 0.7% 00.0% Kansas Norwich 38-kV line Dewey Norwich 38-kV line Split Dewey 38-kV bus Dewey Montana 38-kV line Plus Other Less Severe Outages Albers Kenosha 38-kV line 07.% 0.6% Albers Bain 38-kV line Edgewood St. Martins 38-kV line 98.% Merrill Hills Waukesha 38-kV line Oak Creek Ramsey 38-kV line Kansas Ramsey 38-kV line Nicholson Ramsey 38-kV line 0.0% 96.% 9.% Oak Creek Pennsylvania 38-kV line Waukesha 38-kV bus 99.7% Arcadian6 Waukesha3 38-kV line Kenosha Lakeview 38-kV line 96.% 6.9% Pleasant Prairie Zion 34-kV line Lakeview Zion 38-kV line 9.9% Pleasant Prairie Zion 34-kV line Page 3 of 3

18 Table ZS-3 0 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 0 Summer Peak Case 0 Minimum Load Case % of Facility Rating % of Nominal Bus Voltage % of Facility Rating % of Nominal Bus Voltage 0 70% Shoulder Case % of Facility Rating % of Nominal Bus Voltage 0 90% E-W Bias Case 0 6% High W-E Bias Case % of Facility Rating % of Nominal Bus Voltage % of Facility Rating % of Nominal Bus Voltage Facility Outage(s) Base case loading criteria exceeded TRUE FALSE FALSE FALSE TRUE System Intact Base case voltage criteria exceeded FALSE TRUE FALSE FALSE FALSE System Intact Dartford,Ripon Industrial Park, Northwest Ripon and Ripon 69-kV buses Winneconne, Omro and Omro Industrial Park 69-kV buses % % 9.6% Ripon - NW Ripon Tap 69-KV line Metomen - Ripon 69-KV line NW Ripon Tap - Dartford Tap 69-KV line % Winneconne - Sunset Point 69-kV line Council Creek 6-kV bus 9.% Monroe County - La Crosse 6-kV line Council Creek 38-kV bus 0.% System Intact Metomen 38/69 KV transformer 9.6% System Intact Petenwell 38/69 KV transformer 0.7% 06.% 04.% 03.% % % 9.% System Intact Castle Rock - Quincy ACEC 69-KV line Hilltop - Buckhorn Tap 69-KV line Castle Rock - McKenna 69-kV line 4 Plus other less severe contingencies Castle Rock - ACEC Quincy 69-KV line ACEC Badger West - Petenwell 38-kV line ACEC Badger West - Saratoga 38-kV line 98.8% 98.8% 98.7% % % % 00.% Petenwell - Big Pond 69-KV line Petenwell 38/69-kV Transformer Necedah Tap - Big Pond 69-KV line Arpin - Eau Claire 34-kV line King - Eau Claire 34-kV line Arpin 34/38-kV transformer Arrowhead - Stone Lake 34-kV line Plus other less severe contingencies Arpin - Eau Claire 34-kV line King - Eau Claire 34-kV line Arpin 34/38-kV transformer Arrowhead - Stone Lake 34-kV line Plus other less severe contingencies Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Base case voltage criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Engadine, Newberry, Newberry Hospital, Roberts, LouPac, Newberry Village, Hulbert, Eckerman 69-kV buses % 3 Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact 3 Base case voltage criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact % % Hiawatha-Engadine 69-kV line Engadine-Newberry 69-kV line 3 Darlington North Monroe 38-kV line % Paddock 34/38-kV transformer Darlington 38/69-kV transformer Darlington DPC Gratiot 69-kV line Eden Wyoming Valley 38-kV line Eden Wyoming Valley Spring Green 38-kV line plus other less severe contingencies 3 Eden Mineral Point 69-kV line.3 98.% Darlington Lafayette Wind 38-kV line 3 South Monroe Browntown Jennings Road Wiote 69-kV line % Darlington North Monroe 38-kV line 3 Nelson Dewey 6/38-kV transformer 96.0% System Intact 3 Nelson Dewey 6/38-kV transformer % Nelson Dewey Unit Pleasant Praire Unit Pleasant Praire Unit Edgewater Unit plus other less severe contingencies 3 Royster Sycamore 69-kV line 06.3% 96.3% Femrite 38/69-kV transformer Page of

19 Table ZS-3 0 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 0 Summer Peak Case 0 Minimum Load Case % of Facility Rating % of Nominal Bus Voltage % of Facility Rating % of Nominal Bus Voltage 0 70% Shoulder Case % of Facility Rating % of Nominal Bus Voltage 0 90% E-W Bias Case 0 6% High W-E Bias Case % of Facility Rating % of Nominal Bus Voltage % of Facility Rating % of Nominal Bus Voltage Facility Outage(s) 3 Westport Wanakee Muni# 69-kV line 98.% West Middleton Pheasant Branch 69-kV line 3 Verona 38-kV bus 87.9% 90.8% 88.8% 9.4% Verona Oak Ridge 38-kV line Verona 38/69-kV transformer 3 Huiskamp 38-kV bus 89.4% 4.8% 90.% 90.4% 9.4% Huiskamp North Madison 38-kV line 3 Hubbard and Hustisford 38-kV bus 87.% 88.% 88.% 87.% 87.6% 87.6% 86.9% 87.3% 87.3% 88.% 88.% 88.% 87.% 87.% 87.% Rubicon Hustisford 38-kV line Hustisford Hubbard 38-kV line Rubicon Hustisford Hubbard 38-kV line 3 Paddock Townline 38kV line 0.8% 0.8% 0.% NW Neloit Paddock 38-kV line Paddock NW Beloit Blackhawk 38-kV line NW Beloit Blackhawk 38-kV line 3 NW Beloit Paddock 38kV line 96.9% Paddock Townline 38-kV line 4 Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact 4 Base case voltage criteria exceeded FALSE TRUE FALSE FALSE FALSE System Intact 4 Manrap Custer 69-kV line 99.3% Dewey Lakefront 69-kV line 4 Glenview Gravesville 69-kV line 03.7% 03.7% 03.7% 97.0% 97.0% Tecumseh Road 38/69 kv Transformer* Tecumseh Road 38/69 kv Transformer Tecumseh Road - Ford Drive tap 69-kV line Ford Drive tap - New Holstein 69-kV line Tecumseh Road - New Holstein 69-kV line* 4 Sunset Point Pearl Avenue 69-kV line 0.% 0.4% 98.9% 98.9% Ellinwood 38/69-kV transformer* Ellinwood th Avenue 69-kV line 4 Morgan Falls 38-kV line 0.8% Morgan Plains 34-kV line 4 Elkhart Lake Saukville 38-kV line 97.9% Barnhart Cedarsauk 34-kV line 4 Kewaunee 38-kV bus 03.6% System Intact Base case loading criteria exceeded FALSE FALSE FALSE FALSE FALSE System Intact Base case voltage criteria exceeded FALSE TRUE FALSE FALSE FALSE System Intact Oak Creek 34/30-kV transformer T % 04.4% 0.7% Split Oak Creek 30-kV bus 78 0.% 0.% 99.8% Split Oak Creek 30-kV bus 67 Bain 34/38-kV transformer # 8.4% Split Pleasant Prairie 34-kV bus % Split Pleasant Prairie 34-kV bus 3 Arcadian4 Waukesha 38-kV line 98.4% 0.% 0.4% Arcadian6 Waukesha3 38-kV line Arcadian6 Waukesha3 38-kV line 9.3% 06.8% 6.6% Arcadian4 Waukesha 38-kV line 9.8% 0.0% Split Waukesha - bus Arcadian 34/38-kV transformer #3 9.9% Arcadian 34/38-kV transformer # Zion Arcadian 34-kV line Pleasant Prairie Zion 34-kV line Zion - Arcadian 34-kV line 4 System Intact Lakeview Zion 38-kV line Arcadian Zion 34-kV line Kenosha - Lakeview 38-kV line 96.8% 99.6% 08.% 0.% 98.8% 44% 08.% 4.9% Pleasant Prairie Zion 34-kV line Bain Kenosha 38-kV line 07.8% Pleasant Prairie Zion 34-kV line Albers Kenosha 38-kV line 00.4% Albers Bain 38-kV line Maple and Germantown 38-kV buses % Saukville Maple 38-kV line Page of

20 Table ZS-4 06 Limitations and Performance Criteria Exceeded Planning Zone 06 Summer Peak Case % of Facility % of Nominal Rating Bus Voltage Base case loading criteria exceeded TRUE System Intact Base case voltage criteria exceeded TRUE System Intact Criteria Exceeded/Need Silver Lake, ACEC Spring Lake, Redgranite, Fountain Valley, River Run, Berlin and Fox River 69-kV buses % % % % Facility Outage(s) Wautoma Silver Lake Tap 69-kV line Ripon - Northwest Ripon Tap 69-KV line Metomen Ripon 69-kV line Silver Lake ACEC Spring Lake 69-kV line Dartford,Ripon Industrial Park, Northwest Ripon and Ripon 69-kV buses 96.4% % % % System Intact Ripon - Northwest Ripon Tap 69-KV line Metomen Ripon 69-kV line Northwest Ripon Tap - Dartford Tap 69-KV line Winneconne, Omro and Omro Industrial Park 69-kV buses Castle Rock ACEC Quincy 69-kV line 0.% Metomen 38/69 KV transformer Petenwell 38/69-kV transformer % Winneconne Sunset Point 69-kV line 00.% 0.4% 00.0% 06.% 0.% 07.9% 07.% 07.3% % Necedah Tap Big Pond 69-kV line Petenwell Big Pond 69-kV line Petenwell 38/69-kV transformer System Intact North Fond du Lac 38/69-kV transformer North Fond du Lac Rosendale Tap 69-kV line System Intact Castle Rock Quincy ACEC 69-kV line McKenna Quincy ACEC 69-kV line Hilltop Buckhorn Tap 69-kV line Castle Rock - McKenna 69-kV line Plus other less severe contingencies Wautoma - ACEC Wautoma Tap 69-kV line 96.9% Harrison North - Harrison 69-kV line Base case loading criteria exceeded FALSE System Intact Base case voltage criteria exceeded FALSE System Intact Hulbert, Eckermann, Lou-Pac, Newberry Village, Roberts, Talantino 69-kV buses % % % % Engadine Newberry 69-kV line Newberry Newberry Hospital 69-kV line Newberry Hospital Roberts 69-kV line Hiawatha Roberts 69-kV line Base case loading criteria exceeded FALSE System Intact 3 Base case voltage criteria exceeded FALSE System Intact 3 Timberlane Tap West Middleton 69-kV line 9.6% Spring Green 38/69-kV transformer 3 West Middleton Pheasant Branch 69-kV line % Waunakee Switching Waunakee Municipal 69-kV line Westport Waunakee Municipal 69-kV line 3 West Middleton 38/69-kV transformer West Middleton 38/69-kV transformer 3 Westport Waunakee Muni 69-kV line 4.7% West Middleton Pheasant Branch 69-kV line 3 Waunakee Industrial Park Huiskamp 69-kV line 9.7% West Middleton Pheasant Branch 69-kV line 3 Royster Sycamore 69-kV line.0% Femrite 38/69-kV transformer 3 Huiskamp 38-kV bus 88.7% Huiskamp North Madison 38-kV line 3 Verona 38-kV bus 86.0% Verona Oak Ridge 38-kV line 3 Hubbard and Hustisford 38-kV bus 87.0% 87.7% 87.7% Rubicon Hustisford 38-kV line Hustisford Hubbard 38-kV line Rubicon Hustisford Hubbard 38-kV line 3 Alto 69-kV bus 96.8% System Intact 4 Base case loading criteria exceeded FALSE System Intact 4 Base case voltage criteria exceeded FALSE System Intact 4 Manrap Custer 69-kV line 06.% Dewey Lakefront 69-kV line Page of

21 Table ZS-4 06 Limitations and Performance Criteria Exceeded Planning Zone Criteria Exceeded/Need 06 Summer Peak Case % of Facility % of Nominal Rating Bus Voltage 0.% 0.% 0.% Facility Outage(s) Tecumseh Road 38/69-kV transformer 4 4 Glenview Gravesville 69-kV line Tecumseh Road 38/69-kV transformer Tecumseh Road Ford Drive 69-kV 4 Sunset Point Pearl Avenue 69-kV line 3.% Ellinwood th Avenue 69-kV line.9% Ellinwood 38/69-kV transformer 0 Base Case Loading Criteria Exceeded FALSE System Intact Base Case Voltage Criteria Exceeded FALSE System Intact Bluemound 30-kV buses #, # and #3 9.8% System Intact Brookdale East, Allerton 38-kV buses % System Intact Bain 34/38-kV transformer # 8.9% Split Pleasant Prairie 34-kV bus % Split Pleasant Prairie 34-kV bus 3 Oak Creek 34/30-kV transformer T89 0.4% 04.7% Split Oak Creek 30-kV bus 67 Split Oak Creek 30-kV bus 78 Kenosha Lakeview 38-kV line 03.0% Pleasant Prairie Zion 34-kV line Lakeview Zion 38-kV line 99.3% Pleasant Prairie Zion 34-kV line Pennsylvania 38-kV bus 9.6% Oak Creek Pennsylvania 38-kV line Arcadian Waukesha 38-kV line 96.8% Arcadian Waukesha 38-kV line Page of

22 Table ZS-0 Zone 3 Load and Generation Zone Peak Forecast (megawatts) Average Peak Load Growth N/A.3%.48%.37% Existing Generation Capacity (megawatts) Existing Capacity Less Load (megawatts) Existing Generation Capacity plus Modeled Generating Capacity Additions (megawatts) Modeled Capacity Less Load (megawatts)

23 Figure PR-3 Depending on the status of the projects shown, the transmission line additions may be for illustrative purposes only and may not reflect the actual routes. to La Crosse area Hillsboro Union Center Wonewoc J u n e a u DPC Lyndon Station Platt A d a m s M a r q u e t t e Endeavor ACEC Roslin G r e e n L a k e Alto Waupun F o n d d u L a c Forward Energy Center C r a w f o r d Seneca Gays Mills DPC Bell Center V e r n o n R i c h l a n d James Olson Pine River (ALTE) Robert J Brewer Richland Eagle S a u k Zobel Reedsburg Nishan Artesian Reedsburg Rock Springs Loganville Troy Dell Creek Lakehead Portage Birchwood Loch Mirror Trienda Staff ACEC Lewiston ACEC Cambria Portage Lake Delton Fox Hills Island C Baraboo Merrimac Okee Dam Heights Lodi Eagle View Prairie Du Sac 9th St Sauk Prairie Sauk City Phillips St Cambria Pardeeville Sanborn SS Butternut Auburn North Randolph Columbia SW YD (ALTE) Columbia SW YD (ALTE) North Beaver Dam Mayville Beaver Dam East Caledonia (ALTE) T Fox Lake (ALTE) Rio Pumping Station Spring Brook Beaver Dam 3rd St C o l u m b i a Center St Horicon Ind Park South Beaver Dam Juneau Northside Hubbard Glacier ACEC Calamus ACEC Doylestown D o d g e Juneau Downtown Poynette Fall River Academy Arthur Road Hustisford Arlington Columbus Muni Hartford Butler Ridge Columbus South Hampden Rubicon Deforest W a s h i n g t o n Brisbois Hillside La Pointe Gran Grae Boscobel Boscobel Muni Eastside Wauzeka C Blue River King (king) Muscoda Industrial Sub C Muscoda I o w a Eden Avoca Lone Rock Lands End Dodgeville T Business Park Spring Green Mazomanie South Sun Prairie Concord SW YD Arena C Huiskamp American Black Earth Sycamore SW YD Stage Coach SW STA D a n e T West Middleton Ruskin Fitchburg North East Mount Horeb Muni Cross Country Hooterville Mount Horeb Verona Tokay Nine Springs C Syene C Burke North Stoughton Sun Valley Oregon C Gaston Rd Pflaum Cottage Grove Femrite McFarland Concord SW YD Stony Brook Boxelder Tyranena J e f f e r s o n London Crawfish River Rockdale Lakehead Cambridge Jefferson Cambridge Rockdale Fort Atkinson Stoughton C Bark River Cooney Cottonwood (WE) Summit W a u k e s h a Merrill Hills G r a n t Bloomington Lancaster Distribution Rewey Mineral Point Rock Branch New Hollandale Forward Belleville Brooklyn Stoughton South Sheepskin University (WE) Whitewater Mukwonago Mukwonago Glen Haven Cassville DPC Stoneman to Dubuque area W I S C O N S I N 3 4 M I C H I G A N Potosi Kieler Pioneer(ALTE) Hillman Currently, ATC owns or operates transmission facilities in Wisconsin, Illinois, Minnesota, and the Upper Peninsula of Michigan. Facilities include: * Approximately 9440 miles of transmission lines * 96 wholly owned substations * 49 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee, DePere, and Kingsford, MI Hillman T Cuba City Elmo Benton Belmont L a f a y e t t e DPC Shullsburg Shullsburg Miner Darlington New 69kV Transmission Line DPC LaMont New, 38 or 6 kv Transmission Line New 34 kv Transmission Line Transmission Line Voltage Conversion DPC Gratiot Wiota Blanchardville DPC Argyle Jennings Rd SW STA Browntown G r e e n P L A N N I N G Z O N E 3 New Glarus Monticello (ALTE) North Monroe C South Monroe Monroe Central Blacksmith Albany (ALTE) Brodhead North Brodhead Evansville Muni Union Townline R o c k REC Orfordville Orfordville REC Center Spring Grove Brodhead SW STA REC Newark Bass Creek Footville Russell Shirland Ave Viking Tripp Rd Traxler Turtle Marine REC Red Hawk LaMar REC Harmony Sunrise Venture Colley Rd Wilcox Lakehead Delavan Clinton (ALTE) Scot Forge REC Clinton Scot Forge REC Bradford West Darien Brick Church Walworth Sharon Bluff Creek W a l w o r t h C C Tibbits Sugar Creek Lafayette Elkhorn Zenda North Lake Geneva Y e a r A s s e s s m e n t P r o j e c t s New Substation Existing Transmission Facilities Rebuilt 69 kv Transmission Line Rebuilt, 38 or 6 kv Transmission Line Rebuilt 34 kv Transmission Line Substation Modifications T-D Interconnection Capacitor Bank Transformer ATC Substation, Switchyard or Terminal ATC Transmission Lines 69 kv kv 38 kv 6 kv 30 kv 34 kv T South Lake Geneva Generation R a c i n e Burlington Katzenberg Air Liquide K e n o s h a Non-ATC Substation, Switchyard or Terminal Non-ATC Transmission Line Updated July 9, 0

24 Figure ZS-9 Stoddard Genoa De Soto Chaseburg Ferryville Brisbois Gran Grae Prairie du Chien DPC Prairie Du Chien Hillside La Pointe Bagley Lynxville Eastman Glen Haven Nelson Dewey SW YD Cassville W I S C O N S I N 3 Coon Valley Gays Mills Mount Sterling Gays Mills Patch Grove Seneca Wauzeka Wauzeka Woodman Bloomington Bloomington DPC Stoneman Cassville G r a n t 4 Viroqua Westby DPC Bell Center Bell Center C r a w f o r d Steuben Mount Hope M I C H I G A N V e r n o n Readstown Soldiers Grove Viola Boscobel Muni Boscobel Boscobel Boscobel Muni Eastside Lancaster Distribution Lancaster Lancaster Potosi PotosiTennyson La Farge Fennimore Ontario Blue River Blue River Dickeyville King (king) Kieler Boaz Currently, ATC owns or operates transmission facilities in Wisconsin, Illinois, Minnesota,and the Upper Peninsula of Michigan. Facilities include: * Approximately 9440 miles of transmission lines * 96 wholly owned substations * 49 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee, DePere, and Kingsford, MI Pine River (ALTE) Richland Robert J Brewer Eagle Muscoda Avoca Muscoda Avoca Muscoda Industrial Sub Platteville Yuba R i c h l a n d Eden Montfort Pioneer(ALTE) Hillman Rewey Rewey Elmo Cuba City Cuba City South Cuba City Benton Benton Hillsboro Hillsboro Richland Center James Olson Livingston DPC Platteville Hazel Green Highland Cobb Union Center Union Center Belmont Belmont Elroy I o w a Linden Wonewoc Wonewoc Cazenovia Lone Rock Lone Rock DPC Shullsburg Shullsburg Miner Shullsburg La Valle Ironton Lime Ridge S a u k Lands End Dodgeville Dodgeville Darlington Darlington Zobel Reedsburg Nishan Reedsburg Reedsburg Artesian Loganville Loganville Spring Green Spring Green Wyoming Valley Mineral Point Rock Branch Mineral Point L a f a y e t t e J u n e a u Plain Ridgeway DPC LaMont The information presented in this map document is advisory and is intended for reference purposes only. American Transmission Company owned and operated facility locations are approximate. Gratiot Lyndon Station Lyndon Station Troy Finnegan Platt Kilbourn Wisconsin Dells Muni Wisconsin Dells Dell Creek Birchwood Lake Delton Loch Mirror Lake Delton Fox Hills Rock Springs Rock Springs Island Moore St Baraboo North Freedom Kirkwood Baraboo Okee Lodi Lodi Dane Dane ACEC Cambria Staff Nine Springs McFarland North East Mount Horeb Muni Cross Country Fitchburg Syene Hooterville Blue Mounds McFarland Barneveld Mount Horeb Mount Horeb Oak Ridge Colloday Point Kegonsa Verona Verona Fitchburg DPC Gratiot Wiota Jennings Rd SW STA Dam Heights Eagle View Tower Substation Prairie Du Sac Plant Hamilton St Trienda Portage Portage Ind Park Portage North Madison 34/38 kv De Forest Vienna Cambria Didion Cambria Easy Street Token Creek Bird St Centennial Park Division Street Colorado Arena South Wick Drive Mazomanie Waunakee SW STA Waunakee Yahara River Waterloo Stony Brook Mazomanie Sun Prairie Marshall Huiskamp American Burke Boxelder Arena Mazomanie Industrial Sun Prairie Westport Lakehead Waterloo Reiner Rd Black Earth Black Earth East Towne Cross Plains Pheasant Branch Mendota Ruskin Gaston Rd Stage Coach SW STA Cross Plains Cardinal Middleton Maple Bluff Royster Sprecher Cottage Grove Tyranena Blount Timberlane Walnut GIS Cottage Grove Lake Mills Madison Monona Pflaum D a n e Fen Oak West Towne Tokay Wingra Femrite AGA Gas Deerfield London New Hollandale Hollandale Blanchardville DPC Lyndon Station DPC Argyle Argyle South Wayne Milwaukee Valve Sauk Prairie Blanchardville Sauk City Sauk City Phillips St Forward Browntown Browntown A d a m s Badger Ordinance Works Merrimac G r e e n ACEC Lewiston Merrimac Endeavor M a r q u e t t e Belleville Belleville Endeavor ACEC Roslin Lakehead Portage Poynette Poynette Sun Valley Oregon Oregon Sanborn Pardeeville Pardeeville Columbia SW YD (ALTE) Manley Sand Wyocena Wyocena Caledonia (ALTE) Rio Pumping Station C o l u m b i a Lodi Industrial Park Arlington Arlington North Madison Deforest Brooklyn Brooklyn Rio Hampden Kingston Doylestown North Stoughton Stoughton East Stoughton Stoughton Stoughton South G r e e n L a k e Friesland Markesan Markesan Mackford Prairie ACEC Friesland Fox Lake North Randolph Fox Lake (ALTE) Randolph Randolph ACEC Doylestown Fall River Fall River Academy Christiana Rockdale Dana Corp Sheepskin Edgerton Saunders Creek Alto Beaver Dam 3rd St Beaver Dam Center St ACEC Calamus Columbus Muni Columbus (ALTE) Columbus Columbus South Cottage Grove Jefferson Lakehead Cambridge Jefferson Cambridge Cambridge Rockdale Waupun Main Waupun North Beaver Dam Beaver Dam East Fort Atkinson Fort Atkinson Koch Oil Horicon Ind Park Horicon Hubbard Horicon Juneau Northside Juneau Downtown Juneau Industrial Juneau Whitewater Whitewater Oakfield Kekoskee Theresa Mayville Mayville Spring Brook Hustisford Hustisford Concord SW YD University (WE) Neosho Rubicon Forward Energy Center Butternut Hartford Butler Ridge Hartford Auburn Glacier St Lawrence Arthur Road Sussex Chenequa Cooney Cottonwood (WE) Oconomowoc Hartland Oconomowoc Lake Summit Nashotah Mukwonago Mukwonago New Glarus New Glarus Lakehead Delavan Bluff Creek East Troy Evansville Muni REC Fulton LaMar Waterford Evansville Union Townline Milton REC Red Hawk Monticello (ALTE) Monticello Russell REC Harmony McCue Tibbits R a c i n e Wilcox Sugar Creek Lafayette Albany REC Center Parkview Viking Janesville Burlington North Monroe Air Liquide Albany (ALTE) Traxler Sunrise Footville Elkhorn Elkhorn Bass Creek W a l w o r t h Burlington Janesville General SW YD R o c k Footville Badger Pump STA Tripp Rd Venture REC Orfordville Orfordville Delavan Delavan Idle Hour Brodhead North Brodhead Orfordville REC Bradford Southwest Delavan North Lake Geneva Brodhead REC LaPrairie Brodhead South West Darien Lake Geneva South Monroe Brodhead Central Darien Williams Bay BOC Gasses South Lake Geneva Monroe Monroe Central Turtle Lake Geneva Williams Bay Blacksmith Rock River Marine Scot Forge Scot Forge Zenda Brick Church Twin Lakes (ALTE) Clinton Walworth Spring Grove REC Newark Paddock Cranston Fontana-on-Geneva Lake REC Clinton Cobblestone Katzenberg Brodhead SW STA Walworth Northwest Beloit East Beloit Colley Rd Sharon Genoa City Shirland Ave Beloit Park Ave Sharon P e r f o r m a n c e C r i t e r i a E x c e e d e d a n d O t h e r C o n s t r a i n t s ( 0-0 ) P L A N N I N G Z O N E 3 High or Low Bus Voltage Overloaded Facility D o d g e Lowell Reeseville Waupun Johnson Creek Clyman Watertown J e f f e r s o n F o n d d u L a c Sullivan Oakfield Palmyra Iron Ridge Brownsville Lac La Belle Lomira Dousman Eagle Eden Delafield W a u k e s h a Wales North Prairie Campbellsport Slinger Bark River Merton Kewaskum W a s h i n g t o n Existing Transmission Facilities ATC Office Location Pewaukee Waukesha Merrill Hills ATC Substation, Switchyard or Terminal Non-ATC Substation, Switchyard or Terminal Generation ATC Transmission Line (width = voltage) Non-ATC Transmission Line Modified: June 0, 0

25 Figure ZS-0 Stoddard Genoa De Soto Chaseburg Ferryville Brisbois Gran Grae Prairie du Chien DPC Prairie Du Chien Hillside La Pointe Bagley Lynxville Eastman Glen Haven Nelson Dewey SW YD Cassville W I S C O N S I N 3 Coon Valley Gays Mills Mount Sterling Gays Mills Patch Grove Seneca Wauzeka Wauzeka Woodman Bloomington Bloomington DPC Stoneman Cassville G r a n t 4 Viroqua Westby DPC Bell Center Bell Center C r a w f o r d Steuben Mount Hope M I C H I G A N V e r n o n Readstown Soldiers Grove Viola Boscobel Muni Boscobel Boscobel Boscobel Muni Eastside Lancaster Distribution Lancaster Lancaster Potosi PotosiTennyson La Farge Fennimore Ontario Blue River Blue River Dickeyville King (king) Kieler Boaz Currently, ATC owns or operates transmission facilities in Wisconsin, Illinois, Minnesota,and the Upper Peninsula of Michigan. Facilities include: * Approximately 9440 miles of transmission lines * 96 wholly owned substations * 49 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee, DePere, and Kingsford, MI Pine River (ALTE) Richland Robert J Brewer Eagle Muscoda Avoca Muscoda Avoca Muscoda Industrial Sub Platteville Yuba R i c h l a n d Eden Montfort Pioneer(ALTE) Hillman Rewey Rewey Elmo Cuba City Cuba City South Cuba City Benton Benton Hillsboro Hillsboro Richland Center James Olson Livingston DPC Platteville Hazel Green Highland Cobb Union Center Union Center Belmont Belmont Elroy I o w a Linden Wonewoc Wonewoc Cazenovia Lone Rock Lone Rock DPC Shullsburg Shullsburg Miner Shullsburg La Valle Ironton Lime Ridge S a u k Lands End Dodgeville Dodgeville Darlington Darlington Zobel Reedsburg Nishan Reedsburg Reedsburg Artesian Loganville Loganville Spring Green Spring Green Wyoming Valley Mineral Point Rock Branch Mineral Point L a f a y e t t e J u n e a u Plain Ridgeway DPC LaMont The information presented in this map document is advisory and is intended for reference purposes only. American Transmission Company owned and operated facility locations are approximate. Gratiot Lyndon Station Lyndon Station Troy Finnegan Platt Kilbourn Wisconsin Dells Muni Wisconsin Dells Dell Creek Birchwood Lake Delton Loch Mirror Lake Delton Fox Hills Rock Springs Rock Springs Island Moore St Baraboo North Freedom Kirkwood Baraboo Okee Lodi Lodi Dane Dane ACEC Cambria Staff Nine Springs McFarland North East Mount Horeb Muni Cross Country Fitchburg Syene Hooterville Blue Mounds McFarland Barneveld Mount Horeb Mount Horeb Oak Ridge Colloday Point Kegonsa Verona Verona Fitchburg DPC Gratiot Wiota Jennings Rd SW STA Dam Heights Eagle View Tower Substation Prairie Du Sac Plant Hamilton St Trienda Portage Portage Ind Park Portage North Madison 34/38 kv De Forest Vienna Cambria Didion Cambria Easy Street Token Creek Bird St Centennial Park Division Street Colorado Arena South Wick Drive Mazomanie Waunakee SW STA Waunakee Yahara River Waterloo Stony Brook Mazomanie Sun Prairie Marshall Huiskamp American Burke Boxelder Arena Mazomanie Industrial Sun Prairie Westport Lakehead Waterloo Reiner Rd Black Earth Black Earth East Towne Cross Plains Pheasant Branch Mendota Ruskin Gaston Rd Stage Coach SW STA Cross Plains Cardinal Middleton Maple Bluff Royster Sprecher Cottage Grove Tyranena Blount Timberlane Walnut GIS Cottage Grove Lake Mills Madison Monona Pflaum D a n e Fen Oak West Towne Tokay Wingra Femrite AGA Gas Deerfield London New Hollandale Hollandale Blanchardville DPC Lyndon Station DPC Argyle Argyle South Wayne Milwaukee Valve Sauk Prairie Blanchardville Sauk City Sauk City Phillips St Forward Browntown Browntown A d a m s Badger Ordinance Works Merrimac G r e e n ACEC Lewiston Merrimac Endeavor M a r q u e t t e Belleville Belleville Endeavor ACEC Roslin Lakehead Portage Poynette Poynette Sun Valley Oregon Oregon Sanborn Pardeeville Pardeeville Columbia SW YD (ALTE) Manley Sand Wyocena Wyocena Caledonia (ALTE) Rio Pumping Station C o l u m b i a Lodi Industrial Park Arlington Arlington North Madison Deforest Brooklyn Brooklyn Rio Hampden Kingston Doylestown North Stoughton Stoughton East Stoughton Stoughton Stoughton South G r e e n L a k e Friesland Markesan Markesan Mackford Prairie ACEC Friesland Fox Lake North Randolph Fox Lake (ALTE) Randolph Randolph ACEC Doylestown Fall River Fall River Academy Christiana Rockdale Dana Corp Sheepskin Edgerton Saunders Creek Alto Beaver Dam 3rd St Beaver Dam Center St ACEC Calamus Columbus Muni Columbus (ALTE) Columbus Columbus South Cottage Grove Jefferson Lakehead Cambridge Jefferson Cambridge Cambridge Rockdale Waupun Main Waupun North Beaver Dam Beaver Dam East Fort Atkinson Fort Atkinson Koch Oil Horicon Ind Park Horicon Hubbard Horicon Juneau Northside Juneau Downtown Juneau Industrial Juneau Whitewater Whitewater Oakfield Kekoskee Theresa Mayville Mayville Spring Brook Hustisford Hustisford Concord SW YD University (WE) Neosho Rubicon Forward Energy Center Butternut Hartford Butler Ridge Hartford Auburn Glacier St Lawrence Arthur Road Sussex Chenequa Cooney Cottonwood (WE) Oconomowoc Hartland Oconomowoc Lake Summit Nashotah Mukwonago Mukwonago New Glarus New Glarus Lakehead Delavan Bluff Creek East Troy Evansville Muni REC Fulton LaMar Waterford Evansville Union Townline Milton REC Red Hawk Monticello (ALTE) Monticello Russell REC Harmony McCue Tibbits R a c i n e Wilcox Sugar Creek Lafayette Albany REC Center Parkview Viking Janesville Burlington North Monroe Air Liquide Albany (ALTE) Traxler Sunrise Footville Elkhorn Elkhorn Bass Creek W a l w o r t h Burlington Janesville General SW YD R o c k Footville Badger Pump STA Tripp Rd Venture REC Orfordville Orfordville Delavan Delavan Idle Hour Brodhead North Brodhead Orfordville REC Bradford Southwest Delavan North Lake Geneva Brodhead REC LaPrairie Brodhead South West Darien Lake Geneva South Monroe Brodhead Central Darien Williams Bay BOC Gasses South Lake Geneva Monroe Monroe Central Turtle Lake Geneva Williams Bay Blacksmith Rock River Marine Scot Forge Scot Forge Zenda Brick Church Twin Lakes (ALTE) Clinton Walworth Spring Grove REC Newark Paddock Cranston Fontana-on-Geneva Lake REC Clinton Cobblestone Katzenberg Brodhead SW STA Walworth Northwest Beloit East Beloit Colley Rd Sharon Genoa City Shirland Ave Beloit Park Ave Sharon P e r f o r m a n c e C r i t e r i a E x c e e d e d a n d O t h e r C o n s t r a i n t s ( ) P L A N N I N G Z O N E 3 High or Low Bus Voltage Overloaded Facility D o d g e Lowell Reeseville Waupun Johnson Creek Clyman Watertown J e f f e r s o n F o n d d u L a c Sullivan Oakfield Palmyra Iron Ridge Brownsville Lac La Belle Lomira Dousman Eagle Eden Delafield W a u k e s h a Wales North Prairie Campbellsport Slinger Bark River Merton Kewaskum W a s h i n g t o n Existing Transmission Facilities ATC Office Location Pewaukee Waukesha Merrill Hills ATC Substation, Switchyard or Terminal Non-ATC Substation, Switchyard or Terminal Generation ATC Transmission Line (width = voltage) Non-ATC Transmission Line Updated June 0, 0

26 Figure ZS- Stoddard Genoa De Soto Chaseburg Ferryville Brisbois Gran Grae Prairie du Chien DPC Prairie Du Chien Hillside La Pointe Bagley Lynxville Eastman Glen Haven Nelson Dewey SW YD Cassville W I S C O N S I N 3 Coon Valley Gays Mills Mount Sterling Gays Mills Patch Grove Seneca Wauzeka Wauzeka Woodman Bloomington Bloomington DPC Stoneman Cassville G r a n t 4 Viroqua Westby DPC Bell Center Bell Center C r a w f o r d Steuben Mount Hope M I C H I G A N V e r n o n Readstown Soldiers Grove Viola Boscobel Muni Boscobel Boscobel Boscobel Muni Eastside Lancaster Distribution Lancaster Lancaster Potosi PotosiTennyson La Farge Fennimore Ontario Blue River Blue River Dickeyville King (king) Kieler Boaz Currently, ATC owns or operates transmission facilities in Wisconsin, Illinois, Minnesota,and the Upper Peninsula of Michigan. Facilities include: * Approximately 9440 miles of transmission lines * 96 wholly owned substations * 49 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee, DePere, and Kingsford, MI Pine River (ALTE) Richland Robert J Brewer Eagle Muscoda Avoca Muscoda Avoca Muscoda Industrial Sub Platteville Yuba R i c h l a n d Eden Montfort Pioneer(ALTE) Hillman Rewey Rewey Elmo Cuba City Cuba City South Cuba City Benton Benton Hillsboro Hillsboro Richland Center James Olson Livingston DPC Platteville Hazel Green Highland Cobb Union Center Union Center Belmont Belmont Elroy I o w a Linden Wonewoc Wonewoc Cazenovia Lone Rock Lone Rock DPC Shullsburg Shullsburg Miner Shullsburg La Valle Ironton Lime Ridge S a u k Lands End Dodgeville Dodgeville Darlington Darlington Zobel Reedsburg Nishan Reedsburg Reedsburg Artesian Loganville Loganville Spring Green Spring Green Wyoming Valley Mineral Point Rock Branch Mineral Point L a f a y e t t e J u n e a u Plain Ridgeway DPC LaMont The information presented in this map document is advisory and is intended for reference purposes only. American Transmission Company owned and operated facility locations are approximate. Gratiot Lyndon Station Lyndon Station Troy Finnegan Platt Kilbourn Wisconsin Dells Muni Wisconsin Dells Dell Creek Birchwood Lake Delton Loch Mirror Lake Delton Fox Hills Rock Springs Rock Springs Island Moore St Baraboo North Freedom Kirkwood Baraboo Okee Lodi Lodi Dane Dane ACEC Cambria Staff Nine Springs McFarland North East Mount Horeb Muni Cross Country Fitchburg Syene Hooterville Blue Mounds McFarland Barneveld Mount Horeb Mount Horeb Oak Ridge Colloday Point Kegonsa Verona Verona Fitchburg DPC Gratiot Wiota Jennings Rd SW STA Dam Heights Eagle View Tower Substation Prairie Du Sac Plant Hamilton St Trienda Portage Portage Ind Park Portage North Madison 34/38 kv De Forest Vienna Cambria Didion Cambria Easy Street Token Creek Bird St Centennial Park Division Street Colorado Arena South Wick Drive Mazomanie Waunakee SW STA Waunakee Yahara River Waterloo Stony Brook Mazomanie Sun Prairie Marshall Huiskamp American Burke Boxelder Arena Mazomanie Industrial Sun Prairie Westport Lakehead Waterloo Reiner Rd Black Earth Black Earth East Towne Cross Plains Pheasant Branch Mendota Ruskin Gaston Rd Stage Coach SW STA Cross Plains Cardinal Middleton Maple Bluff Royster Sprecher Cottage Grove Tyranena Blount Timberlane Walnut GIS Cottage Grove Lake Mills Madison Monona Pflaum D a n e Fen Oak West Towne Tokay Wingra Femrite AGA Gas Deerfield London New Hollandale Hollandale Blanchardville DPC Lyndon Station DPC Argyle Argyle South Wayne Milwaukee Valve Sauk Prairie Blanchardville Sauk City Sauk City Phillips St Forward Browntown Browntown A d a m s Badger Ordinance Works Merrimac G r e e n ACEC Lewiston Merrimac Endeavor M a r q u e t t e Belleville Belleville Endeavor ACEC Roslin Lakehead Portage Poynette Poynette Sun Valley Oregon Oregon Sanborn Pardeeville Pardeeville Columbia SW YD (ALTE) Manley Sand Wyocena Wyocena Caledonia (ALTE) Rio Pumping Station C o l u m b i a Lodi Industrial Park Arlington Arlington North Madison Deforest Brooklyn Brooklyn Rio Hampden Kingston Doylestown North Stoughton Stoughton East Stoughton Stoughton Stoughton South G r e e n L a k e Friesland Markesan Markesan Mackford Prairie ACEC Friesland Fox Lake North Randolph Fox Lake (ALTE) Randolph Randolph ACEC Doylestown Fall River Fall River Academy Christiana Rockdale Dana Corp Sheepskin Edgerton Saunders Creek Alto Beaver Dam 3rd St Beaver Dam Center St ACEC Calamus Columbus Muni Columbus (ALTE) Columbus Columbus South Cottage Grove Jefferson Lakehead Cambridge Jefferson Cambridge Cambridge Rockdale Waupun Main Waupun North Beaver Dam Beaver Dam East Fort Atkinson Fort Atkinson Koch Oil Horicon Ind Park Horicon Hubbard Horicon Juneau Northside Juneau Downtown Juneau Industrial Juneau Whitewater Whitewater Oakfield Kekoskee Theresa Mayville Mayville Spring Brook Hustisford Hustisford Concord SW YD University (WE) Neosho Rubicon Forward Energy Center Butternut Hartford Butler Ridge Hartford Auburn Glacier St Lawrence Arthur Road Sussex Chenequa Cooney Cottonwood (WE) Oconomowoc Hartland Oconomowoc Lake Summit Nashotah Mukwonago Mukwonago New Glarus New Glarus Lakehead Delavan Bluff Creek East Troy Evansville Muni REC Fulton LaMar Waterford Evansville Union Townline Milton REC Red Hawk Monticello (ALTE) Monticello Russell REC Harmony McCue Tibbits R a c i n e Wilcox Sugar Creek Lafayette Albany REC Center Parkview Viking Janesville Burlington North Monroe Air Liquide Albany (ALTE) Traxler Sunrise Footville Elkhorn Elkhorn Bass Creek W a l w o r t h Burlington Janesville General SW YD R o c k Footville Badger Pump STA Tripp Rd Venture REC Orfordville Orfordville Delavan Delavan Idle Hour Brodhead North Brodhead Orfordville REC Bradford Southwest Delavan North Lake Geneva Brodhead REC LaPrairie Brodhead South West Darien Lake Geneva South Monroe Brodhead Central Darien Williams Bay BOC Gasses South Lake Geneva Monroe Monroe Central Turtle Lake Geneva Williams Bay Blacksmith Rock River Marine Scot Forge Scot Forge Zenda Brick Church Twin Lakes (ALTE) Clinton Walworth Spring Grove REC Newark Paddock Cranston Fontana-on-Geneva Lake REC Clinton Cobblestone Katzenberg Brodhead SW STA Walworth Northwest Beloit East Beloit Colley Rd Sharon Genoa City Shirland Ave Beloit Park Ave Sharon P e r f o r m a n c e C r i t e r i a E x c e e d e d a n d O t h e r C o n s t r a i n t s ( ) P L A N N I N G Z O N E 3 High or Low Bus Voltage Overloaded Facility D o d g e Lowell Reeseville Waupun Johnson Creek Clyman Watertown J e f f e r s o n F o n d d u L a c Sullivan Oakfield Palmyra Iron Ridge Brownsville Lac La Belle Lomira Dousman Eagle Eden Delafield W a u k e s h a Wales North Prairie Campbellsport Slinger Bark River Merton Kewaskum W a s h i n g t o n Existing Transmission Facilities ATC Office Location Pewaukee Waukesha Merrill Hills ATC Substation, Switchyard or Terminal Non-ATC Substation, Switchyard or Terminal Generation ATC Transmission Line (width = voltage) Non-ATC Transmission Line Updated June 0, 0

27 Figure ZS- Stoddard Genoa De Soto Chaseburg Ferryville Brisbois Gran Grae Prairie du Chien DPC Prairie Du Chien Hillside La Pointe Bagley Lynxville Eastman Glen Haven Nelson Dewey SW YD Cassville W I S C O N S I N 3 Coon Valley Gays Mills Mount Sterling Gays Mills Patch Grove Seneca Wauzeka Wauzeka Woodman Bloomington Bloomington DPC Stoneman Cassville G r a n t 4 Viroqua Westby DPC Bell Center Bell Center C r a w f o r d Steuben Mount Hope M I C H I G A N V e r n o n Readstown Soldiers Grove Viola Boscobel Muni Boscobel Boscobel Boscobel Muni Eastside Lancaster Distribution Lancaster Lancaster Potosi PotosiTennyson La Farge Fennimore Ontario Blue River Blue River Dickeyville King (king) Kieler Boaz Currently, ATC owns or operates transmission facilities in Wisconsin, Illinois, Minnesota,and the Upper Peninsula of Michigan. Facilities include: * Approximately 9440 miles of transmission lines * 96 wholly owned substations * 49 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee, DePere, and Kingsford, MI Pine River (ALTE) Richland Robert J Brewer Eagle Muscoda Avoca Muscoda Avoca Muscoda Industrial Sub Platteville Yuba R i c h l a n d Eden Montfort Pioneer(ALTE) Hillman Rewey Rewey Elmo Cuba City Cuba City South Cuba City Benton Benton Hillsboro Hillsboro Richland Center James Olson Livingston DPC Platteville Hazel Green Highland Cobb Union Center Union Center Belmont Belmont Elroy I o w a Linden Wonewoc Wonewoc Cazenovia Lone Rock Lone Rock DPC Shullsburg Shullsburg Miner Shullsburg La Valle Ironton Lime Ridge S a u k Lands End Dodgeville Dodgeville Darlington Darlington Zobel Reedsburg Nishan Reedsburg Reedsburg Artesian Loganville Loganville Spring Green Spring Green Wyoming Valley Mineral Point Rock Branch Mineral Point L a f a y e t t e J u n e a u Plain Ridgeway DPC LaMont The information presented in this map document is advisory and is intended for reference purposes only. American Transmission Company owned and operated facility locations are approximate. Gratiot Lyndon Station Lyndon Station Troy Finnegan Platt Kilbourn Wisconsin Dells Muni Wisconsin Dells Dell Creek Birchwood Lake Delton Loch Mirror Lake Delton Fox Hills Rock Springs Rock Springs Island Moore St Baraboo North Freedom Kirkwood Baraboo Okee Lodi Lodi Dane Dane ACEC Cambria Staff Nine Springs McFarland North East Mount Horeb Muni Cross Country Fitchburg Syene Hooterville Blue Mounds McFarland Barneveld Mount Horeb Mount Horeb Oak Ridge Colloday Point Kegonsa Verona Verona Fitchburg DPC Gratiot Wiota Jennings Rd SW STA Dam Heights Eagle View Tower Substation Prairie Du Sac Plant Hamilton St Trienda Portage Portage Ind Park Portage North Madison 34/38 kv De Forest Vienna Cambria Didion Cambria Easy Street Token Creek Bird St Centennial Park Division Street Colorado Arena South Wick Drive Mazomanie Waunakee SW STA Waunakee Yahara River Waterloo Stony Brook Mazomanie Sun Prairie Marshall Huiskamp American Burke Boxelder Arena Mazomanie Industrial Sun Prairie Westport Lakehead Waterloo Reiner Rd Black Earth Black Earth East Towne Cross Plains Pheasant Branch Mendota Ruskin Gaston Rd Stage Coach SW STA Cross Plains Cardinal Middleton Maple Bluff Royster Sprecher Cottage Grove Tyranena Blount Timberlane Walnut GIS Cottage Grove Lake Mills Madison Monona Pflaum D a n e Fen Oak West Towne Tokay Wingra Femrite AGA Gas Deerfield London New Hollandale Hollandale Blanchardville DPC Lyndon Station DPC Argyle Argyle South Wayne Milwaukee Valve Sauk Prairie Blanchardville Sauk City Sauk City Phillips St Forward Browntown Browntown A d a m s Badger Ordinance Works Merrimac G r e e n ACEC Lewiston Merrimac Endeavor M a r q u e t t e Belleville Belleville Endeavor ACEC Roslin Lakehead Portage Poynette Poynette Sun Valley Oregon Oregon Sanborn Pardeeville Pardeeville Columbia SW YD (ALTE) Manley Sand Wyocena Wyocena Caledonia (ALTE) Rio Pumping Station C o l u m b i a Lodi Industrial Park Arlington Arlington North Madison Deforest Brooklyn Brooklyn Rio Hampden Kingston Doylestown North Stoughton Stoughton East Stoughton Stoughton Stoughton South G r e e n L a k e Friesland Markesan Markesan Mackford Prairie ACEC Friesland Fox Lake North Randolph Fox Lake (ALTE) Randolph Randolph ACEC Doylestown Fall River Fall River Academy Christiana Rockdale Dana Corp Sheepskin Edgerton Saunders Creek Alto Beaver Dam 3rd St Beaver Dam Center St ACEC Calamus Columbus Muni Columbus (ALTE) Columbus Columbus South Cottage Grove Jefferson Lakehead Cambridge Jefferson Cambridge Cambridge Rockdale Waupun Main Waupun North Beaver Dam Beaver Dam East Fort Atkinson Fort Atkinson Koch Oil Horicon Ind Park Horicon Hubbard Horicon Juneau Northside Juneau Downtown Juneau Industrial Juneau Whitewater Whitewater Oakfield Kekoskee Theresa Mayville Mayville Spring Brook Hustisford Hustisford Concord SW YD University (WE) Neosho Rubicon Forward Energy Center Butternut Hartford Butler Ridge Hartford Auburn Glacier St Lawrence Arthur Road Sussex Chenequa Cooney Cottonwood (WE) Oconomowoc Hartland Oconomowoc Lake Summit Nashotah Mukwonago Mukwonago New Glarus New Glarus Lakehead Delavan Bluff Creek East Troy Evansville Muni REC Fulton LaMar Waterford Evansville Union Townline Milton REC Red Hawk Monticello (ALTE) Monticello Russell REC Harmony McCue Tibbits R a c i n e Wilcox Sugar Creek Lafayette Albany REC Center Parkview Viking Janesville Burlington North Monroe Air Liquide Albany (ALTE) Traxler Sunrise Footville Elkhorn Elkhorn Bass Creek W a l w o r t h Burlington Janesville General SW YD R o c k Footville Badger Pump STA Tripp Rd Venture REC Orfordville Orfordville Delavan Delavan Idle Hour Brodhead North Brodhead Orfordville REC Bradford Southwest Delavan North Lake Geneva Brodhead REC LaPrairie Brodhead South West Darien Lake Geneva South Monroe Brodhead Central Darien Williams Bay BOC Gasses South Lake Geneva Monroe Monroe Central Turtle Lake Geneva Williams Bay Blacksmith Rock River Marine Scot Forge Scot Forge Zenda Brick Church Twin Lakes (ALTE) Clinton Walworth Spring Grove REC Newark Paddock Cranston Fontana-on-Geneva Lake REC Clinton Cobblestone Katzenberg Brodhead SW STA Walworth Northwest Beloit East Beloit Colley Rd Sharon Genoa City Shirland Ave Beloit Park Ave Sharon P e r f o r m a n c e C r i t e r i a E x c e e d e d a n d O t h e r C o n s t r a i n t s ( ) P L A N N I N G Z O N E 3 High or Low Bus Voltage Overloaded Facility D o d g e Lowell Reeseville Waupun Johnson Creek Clyman Watertown J e f f e r s o n F o n d d u L a c Sullivan Oakfield Palmyra Iron Ridge Brownsville Lac La Belle Lomira Dousman Eagle Eden Delafield W a u k e s h a Wales North Prairie Campbellsport Slinger Bark River Merton Kewaskum W a s h i n g t o n Existing Transmission Facilities ATC Office Location Pewaukee Waukesha Merrill Hills ATC Substation, Switchyard or Terminal Non-ATC Substation, Switchyard or Terminal Generation ATC Transmission Line (width = voltage) Non-ATC Transmission Line Updated June 0, 0

28 Figure ZS DPC Gratiot Shullsburg Benton New London (ALTW) Browntown Shullsburg Shullsburg Miner 6 N-3 South Monroe W-4 Brodhead South Monroe Central Orfordville Brodhead Muni 3 SW STR X 3 R O C K Blacksmith Blacksmith Spring Grove Spring Grove 8 Brodhead SW STA REC Newark REC Newark W9 Hazel Green 796L Y6 8 CGSG RUBG RU BG Y Rock X River -3 BOC Town Turtle Gasses Line Y -4 Rd (ALTE) Marine REC Bradford 79 REC LaPrairie Northwest 43 Cranston Paddock Beloit Beloit 3 Cranston Dickinson Northwest Colt (ALTE) Beloit Tap Colley Industries Rd Enzyme Blackhawk SW YD (ALTE) EastBioBeloit Systems Shirland Park Ave Tap Ave Park Ave Darien Williams Bay West Darien REC Clinton Clinton SW STR (ALTE) REC Clinton 4 Sharon East Union Rockton Grove Janesville / Beloit Area 896 Paris 4 North Lake Geneva Williams Bay Lake Geneva Sw Str Lake Geneva Williams Bay 7 South Lake Geneva Lake Geneva 0 Paddock Lake Brick Church Kenosha 94 Silver Lake Fontana-onGeneva Lake Air Liquide Tap Air Liquide Scot Forge Clinton (ALTE) Scot Forge X3 G-WH A3 Park Ave Southwest Delavan Delavan 79 East Beloit Enzyme Bio-Systems Delavan W Dickinson (ALTE) 4 Bristol (ALTE) Venture 73 Colley Rd I L L I N O I S Elkhorn Sunrise 79 4 Raymond Shirland Ave Burlington Elkhorn 43 REC Shaw Burlington W A L W O R T H Oak Creek BOC Gasses Browntown South Wayne Tripp Rd 7 Benton Monroe Central DPC Shullsburg Benton STR Monroe Janesville 38 North Lake Geneva Tap Venture REC Orfordville Orfordville Orfordville REC Orfordville Viking Janesville General SW YD Lafayette Blackhawk SW YD (ALTE) Cuba City South Wiota Idle Hour Badger Pump STA Parkview 79 DPC Gratiot 83 YBrodhead North Brodhead Brodhead Brodhead Muni SW Central Bass Creek Badger Pump STA Tap Wilcox Parkview SW STR Traxler SW STR Traxler Sugar Creek 79 Summit Lake (ALTW) Idle Hour Footville Milton Lawns 7 Cuba City South 04 Kieler Jennings Rd SW Wiota STA Cuba Cuba City City Footville Albany (ALTE) Y87 North Monroe Elmo Elmo Footville Albany (ALTE) 49 Tibbits Root River 4 Colt 8Tichigan Rochester 4 Darlington 49 Parker High School X Darlington REC Center REC Center Tap DPC Argyle 4 L A F A Y E T T E Albany G R E E N Argyle 8 Waterford McCue REC Harmony REC Harmony 3 DPC LaMont Tennyson Potosi Cuba City W Hillman Beloit R A C I N Industries E Russell East Troy Cranston REC Red Hawk STR 7 3 Cassville DPC Platteville 4 Monticello (ALTE) Belmont REC Red Hawk SW 0 Bluff Creek Lakehead Delavan Tap Milton LaMar LaMar 3 DPC Platteville Tap Monticello Monticello 6 REC Fulton 39 Y6 Potosi SW STR Potosi Pioneer(ALTE) Evansville Muni Evansville Muni Union Townline Union Townline Belmont Mcgregor (ALTE) Y8 Fulton 73 X Northwest Beloit Paddock 3 Lakehead Delavan Y 8 Whitewater 43 6 Platteville 9 I O W A 0 6 DPC Stoneman Saunders Creek SW STR Evansville 6 E Q- Cassville Nelson Dewey SW YD D Q- Dana Corp 04 Glarus 8 Whitewater Saunders Creek Franklin Marine 778K New Glarus New L-ERG7 Mukwonago 39 Y St Martins Blanchardville 6 4 New Glarus X79 79 Rock Turtle MuskegoTown 74 River Line XRd (ALTE) 79 Big Bend K 67 Montana Branch Edgewood Mukwonago 44 3 Dana Corp Sheepskin Blanchardville 303 BOC Gasses Eagle 9 University (WE) Edgerton Lancaster Glen Haven 96 3 Brooklyn Brooklyn 3 6 Stoughton South Rewey 6 W A U K E S H A 4 Belleville Mineral Point Rewey 8 Stoughton East Stoughton Venture 43rd St NWHG6 Term KANG8 87K6 Allerton Brookdale st K 063 St Term REC Greendale LaPrairie R O C X3 North Prairie Y Belleville New Berlin 06 9 Rewey Fort Atkinson Tripp Rd 30 Lancaster Distribution Rock Branch Mineral Point Fort Atkinson Palmyra New Hollandale Arcadian 996 Merrill Hills 3 3 Rockdale Hollandale 6 Cambridge 66 XRockdale Christiana 9 Stoughton Forward Haymarket 79 Square Wauwatosa 9 Sunrise Everett 4 XPark Janesville 6 O Connor 04 Hill 8th St 0 YD General SW Greves Valley 0 Bluemound 96th St (WE) Walker 063 West 87K6 Junction West Milwaukee Moorland West Allis Lincoln Stoughton 38 Oregon Elm Grove Y Wales Center 83 7 Oregon Bloomington Lancaster Jefferson Sullivan 8 4 Tosa 4 Forward Lakehead Cambridge Waukesha-3 Waukesha Dousman 8 Jefferson North Stoughton Muni -N Sun Valley 70 Brookfield Pewaukee Custer Term Wilcox Cornell - Milwaukee Fiebrantz 363 Parkview Janesville 8 Cambridge North North Stoughton Muni SW Stoughton STR-S 78 Livingston G-CHR Kegonsa 664 J E F F E R S O N Butler Traxler 9 Cambridge Bloomington Sun Valley Sw Str 4 Linden Bagley Fitchburg Colloday Point 9 G R A N T Butler 7 6 Colloday Point Patch Grove 36 Dodgeville Crawfish River 343 Milton Lawns Cobb Montfort 9 Cottage Grove Lakehead Cambridge Tap 663 Verona Eden McFarland 388 London London Fennimore Deerfield X83 Oak Ridge Delafield Range Range Line Dist Line SW Sidney 6 9 Term Glendale Lands Lands End End Fen Oak Granville 3444 Viking Pewaukee 9043 McCue 90 Zenda Twin Lakes (ALTE) 0 0 I O W A Verona Mount Horeb Lake Mills 6 Cottonwood (WE) Milwaukee Tamarack River Hills REC Harmony Parkland Menomonee Falls Mill Rd 94 McFarland Syene Fitchburg Milton Thiensville LaMar 6 34 Duplainville 643 Summit Cottage Grove Femrite North East Mount Horeb Muni Femrite 38/69 kv Tyranena Cottage Grove AGA Gas Pflaum OconomowocOconomowoc Lake Nashotah Ridgeway Sprecher Sussex Mount Horeb Cooney Cottage Grove Gaston Rd Nine Springs Sussex Hooterville 7 Cross Country 43 Mequon 68th St 066 Blue Mounds Fulton 4 Lannon 994 La Pointe Chenequa Gaston Rd Merton 64 Wingra Sprecher Tap Bark River JE FG 3 JEFG Tokay Germantown REC 7 7 Germantown SW YD 66 Concord SW YD JEFG3 JEFG Madison Mequon 6 Swan 70 8 West Towne Lakehead Waterloo Reiner Rd Hillside La Pointe D A N E Royster Walnut (MGE) Blount Walnut East GIS Campus Marshall Stony Brook BOEG6 Boxelder 80 3 Gateway Shorewood Hills 6998 Highland Mount Hope X87 Blackhawk (MGE) Sycamore SW YD Ruskin Mendota Pheasant Branch Cardinal 38 6 Timberlane Pleasant View Gran Grae East Towne Wauzeka Barneveld 67 W Timberlane West Middleton W-0 Brisbois DPC Prairie Du Chien Woodman Stage Coach SW STA 9 Maple (WE) Russell South Sun Prairie 6 0 Burke Tap Wauzeka King (king) Cross Plains Cedarburg Cedarburg South Wauzeka 7 Grafton American Maple Bluff Middleton Colloday Point 8 G-DPV 6 7 DPC Prairie Du Chien Cross Plains Colorado Burke Huiskamp Westport Black Earth Bird St Tap Sun Prairie Waunakee Black Earth Wyoming Valley Rubicon BG RU Watertown Bird St Token Creek 9 Boscobel Muni Boscobel Muni Eastside Token Creek Tap Boscobel Ind Park Mazomanie Sw Str Wyoming Valley Boscobel Wick Drive W A S H I N G T O N 8 Arena Arena Mazomanie 43 UG SA Edgerton Saunders JacksonCreek Slinger 8 Spring Green Hampden Business Park Yahara River Mazomanie STR Industrial Division Centennial Street Park Waunakee SW STA Waunakee Waunakee Industrial Park Saukville 73 Muni Distrib Mazomanie Industrial SW ArenaSW STR 8 G SAU L-CYP Spring Green Avoca North Side 3 Blue Blue RiverRiver Lone Rock Avoca Pleasant Valley 388 Oak Ridge Charter Steel 74 Saukville 83 Cedarsauk 7 76 W-4 79 BG RU 4 67 Vienna Waunakee Muni 3 SW STR Neosho De Forest 9 Eastman Blue River Steuben Lone Rock Avoca Muscoda Industrial Muscoda Sub Muscoda Muscoda Clyman Reeseville FG HT Butler Ridge McFarland Charter Steel Sw Str Fitchburg 67 Deforest Springs O Z A U K E E 83 Hartford Dane C R A W F O R D Fitchburg North Madison 34/38 kv North Madison Dane Sauk City Phillips St Troy NewburgNine Syene Troy Lynxville Lowell 3 4 Plain Eagle 8 Bell Center Lodi Okee Hartford 6 Dam Heights Plant Milwaukee Tower Valve Substation Prairie Du Sac 9th St Sauk Prairie Fredonia St Arthur Lawrence Road Columbus South Hampden Lodi Lodi 8 Y3 Dam Heights North Tap View Prairie Du Sac 387 DPC Bell Center Seneca Seneca Lodi Industrial Park Eagle 3 Robert J Brewer Pine Richland River (ALTE) Richland X8 7 Gays Mills Columbus 7 AGA Gas Pflaum MononaFredonia 7 Gays Mills 60 Arlington Hustisford Columbus Columbus Muni (ALTE) Royster 33 Verona Y Cross Country Iron Ridge BG RU Mount Sterling Arlington Lodi Ind Park Pine River SW Brewer Sw Str STR (ALTE) West Barton Bend 696 Madison Northside 80 Gateway 3 Blount Glacier Hustisford Arlington Wingra D A N E 34 Okee James Olson 0 Fall River Academy 88 Hubbard Juneau Industrial Fall River Poynette Richland Center 69 Horicon 30 Random Lake East Campus Horicon Juneau Industrial Sw Str Juneau Juneau Muni Juneau South Beaver Dam Juneau Downtown Merrimac Badger Ordinance Works Boaz ACEC Doylestown SW STR ACEC Doylestown Merrimac Gays Mills ACEC Calamus Poynette R I C H L A N D Ferryville Doylestown 78 Soldiers Grove Horicon Ind Park 0 W6 Merrimac Beaver Dam Center St 3rd St South 693 Tokay West Towne 38 4 Rio 7 Beaver Dam 3rd St X6 6 C O L U M B I A Y6 Loganville X 3 S A U K Rio Pumping Station Walnut Spring Brook Beaver Dam East Shorewood Hills 696 Kewaskum 3 8 Caledonia (ALTE) 46 Wyocena Blackhawk (MGE) GIS Mayville D O D G E North Beaver Dam 8 Baraboo Moore St Skillet Creek Columbia SW YD (ALTE) Caledonia Island Wyocena SW STR 6 Manley Sand Tap Middleton L-SEC 3 Manley Sand 8 North Freedom Loganville 8 Kirkwood Island Tap Wyocena Auburn Pleasant View Mayville 33 Ruskin Holland Random Lake80 3 Mendota 4 Pheasant G-Branch BT B Readstown De Soto W- 33 Baraboo 36 4 Kekoskee 9 Rock Springs Randolph Pardeeville Lake Delton 4 4 Lime Ridge Rock Springs Fox Lake SW STR (ALTE) Randolph X 7 X7 70 Sanborn Pardeeville 99 Artesian Portage 0 Y6 80 Lake Delton Fox Hills Fox Lake (ALTE) Randolph Tap Didion ACEC Cambria Cambria Cambria Didion 8 Maple Bluff East Towne 938 Reedsburg Reedsburg Cazenovia 6 7 Cambria Pardeeville Fox Lake Yuba 6 North Randolph Ironton 90 ACEC Friesland 47 Reedsburg Nishan Portage Ind Hamilton St Park Hamilton St 9 Portage 0 Trienda Zobel Viroqua 6 68 Friesland ACEC Cambria 3 YCampbellsport 4 ACEC Lewiston V E R N O N S H E B O Y G A N Brownsville Adell Butternut Lakehead Portage Sw Str ACEC Lewiston 49 Westport L A C D U Huiskamp 406 Loch Mirror Waupun Lakehead Portage 7 7 Birchwood La Valle 39 F O N D Koch Oil SW STR Madison Area B BT G- 8 La Farge Dell Creek 7 Waupun Waupun Main Lyndon Lyndon Tap American Cascade Forward Energy Center Waupun Tap Waldo Wisconsin Dells Muni Kilbourn Platt Finnegan Wisconsin Dells Alto Alto Wonewoc L A K E 3 Eden Oakfield G R E E N ACEC Roslin SW ACEC STR Roslin A D A M S 0 Wonewoc Hillsboro Endeavor DPC Lyndon Station 0 Westby J U N E A U 0 0 Y0 Hillsboro 6 Chaseburg Union Center Hillsboro Tap Kingston Endeavor Sw Str 9 33 M A R Q U E T T E 3 Y7 7 DPC Lyndon STA SW STR L-COL Union Center Walworth Walworth Cobblestone -ALE Zenda Sharon Twin Lakes K E N O S H A Spring Valley (WE) Katzenberg Sharon 4 REC Shaw I L L I N O I S 3 East Rockton East Rockton T r a n s m i s s i o n Electric Transmission and Related Facilities Transmission Facilities Substation or Switching Yard Tap or Switching Structure Transmission Line Voltage and Type N e t w o r k a n d S u b s t a t i o n s Non-ATC 69 kv Underground < 0 kv 69 kv 69 kv Double Circuit kv kv Double Circuit 38 kv 38 kv Double Circuit 6 kv 6 kv Double Circuit kv 30 kv 30 kv Double Circuit 6 kv 34 kv 34 kv Double Circuit 69 kv 38 kv Underground P L A N N I N G Z O N E 3 88 kv W I S C O N S I N Generation ATC Office Location M I C H I G A N 4 Miles 34 kv Non-Op Underground Mixed voltage double circuit lines drawn with each line color corresponding to the appropriate voltage. 0 0 Airport, Airfield or Helicopter Landing Area Tap or Switching Structure 0 3 Currently, ATC owns or operates transmission facilities in 0 Wisconsin counties and in Michigan counties. Facilities include: * Approximately 930 miles of transmission lines * 96 wholly owned substations * 40 jointly owned substations * ATC offices in Madison, Cottage Grove, Pewaukee, De Pere, Wausau and Kingsford, MI The information presented in this map document represent the most current and accurate georeferenced compilation of ATC owned and operated transmission facilities available - some facility locations may be approximate. This map is advisory and intended for reference purposes only. Please direct any revisions or corrections to ATC Asset Applications and GIS Group. Base Map Information: ATC, PSCW, MiDNR, WDNR G:\WORKSPACE\ArcMap Templates\Zone Maps\Zone3.mxd Modified: Feb, 0 Revised February 0