RockGen Energy Center
2346 Clearview Road, Cambridge, WI 53523Plant Summary Information
RockGen Energy Center is ranked #12 out of 261 power plants in Wisconsin in terms of total annual net electricity generation.
RockGen Energy Center is comprised of 3 generators and generated 337.5 GWh during the 3-month period between May 2026 to August 2026.
| Plant Name | RockGen Energy Center |
|---|---|
| Utility Name | Dairyland Power Coop |
| Location | Dane County, WI |
| Initial Operation Date | June 2001 |
| Last Update | Aug 2026 |
| Annual Generation | 597.7 GWh |
| Annual Consumption | 9.2 M MMBtu |
| Ranked #1,173 out of 13,301 Power Plants Nationwide | |
| Ranked #523 out of 2,218 Natural Gas Power Plants Nationwide | |
| Ranked #12 out of 261 Wisconsin Power Plants | |
| Ranked #5 out of 50 Wisconsin Natural Gas Power Plants | |
| Fuel Types | Natural Gas : 98.3% Distillate Fuel Oil : 1.7% |
| Previous Operators |
Calpine -RockGen Energy (2013 to 2018) Rockgen Energy LLC (2019 to 2020) Dairyland Power Coop (2021 to 2025) |
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Monthly Net Generation for RockGen Energy Center
Monthly Plant Fuel Consumption for RockGen Energy Center
RockGen Energy Center Details
| Summary Information | |
|---|---|
| Plant Name | RockGen Energy Center (55391) |
| Plant Address | 2346 Clearview Road, Cambridge, WI 53523 |
| Utility | Dairyland Power Coop (4716) |
| Latitude, Longitude | 42.9767, -89.0492 |
| Generation Dates on File | Jun 2001 to Aug 2026 |
| Initial Operation Date | June 2001 |
| Annual Generation | 597.7 GWh |
| Fuel Types | Natural Gas : 98.3% Distillate Fuel Oil : 1.7% |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | Yes |
| FERC Exempt Wholesale Generator Docket Number | 99-48-00 |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | MRO |
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. (MISO) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | |
| Ash Impoundment | No |
| Transmission / Distribution Owner | American Transmission Co (659) WI |
| Grid Voltage | 138.00 kV |
| Energy Storage | No |
| Natural Gas Information | |
| Pipeline Name | ANR PIPELINE COMPANY |
| Natural Gas Storage | No |
Generator 01 Details Operating June 2001
| Technology | Natural Gas Fired Combustion Turbine |
|---|---|
| Prime Mover | Combustion Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 187 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 163 MW |
| Winter Capacity | 163 MW |
| Minimum Load | 102 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | June 2001 |
|---|---|
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Natural Gas / Distillate Fuel Oil |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
| Multiple Fuels | Yes |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | Yes |
| Multifuel Details | |
| Switch When Operating | Yes |
|---|---|
| Net Summer Capacity With Natural Gas | 155 MW |
| Net Winter Capacity With Natural Gas | 162 MW |
| Net Summer Capacity With Oil | 155 MW |
| Net Winter Capacity With Oil | 162 MW |
| Time To Switch From Gas To Oil | 1H |
| Time To Switch From Oil To Gas | 1H |
| Factors That Limit Switching | Yes |
| Air Permit Limits | Yes |
Generator 02 Details Operating June 2001
| Technology | Natural Gas Fired Combustion Turbine |
|---|---|
| Prime Mover | Combustion Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 187 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 163 MW |
| Winter Capacity | 163 MW |
| Minimum Load | 102 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | June 2001 |
|---|---|
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Natural Gas / Distillate Fuel Oil |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
| Multiple Fuels | Yes |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | Yes |
| Multifuel Details | |
| Switch When Operating | Yes |
|---|---|
| Net Summer Capacity With Natural Gas | 155 MW |
| Net Winter Capacity With Natural Gas | 162 MW |
| Net Summer Capacity With Oil | 155 MW |
| Net Winter Capacity With Oil | 162 MW |
| Time To Switch From Gas To Oil | 1H |
| Time To Switch From Oil To Gas | 1H |
| Factors That Limit Switching | Yes |
| Air Permit Limits | Yes |
Generator 03 Details Operating June 2001
| Technology | Natural Gas Fired Combustion Turbine |
|---|---|
| Prime Mover | Combustion Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 187 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 163 MW |
| Winter Capacity | 163 MW |
| Minimum Load | 102 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | June 2001 |
|---|---|
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Natural Gas / Distillate Fuel Oil |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
| Multiple Fuels | Yes |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | Yes |
| Multifuel Details | |
| Switch When Operating | Yes |
|---|---|
| Net Summer Capacity With Natural Gas | 155 MW |
| Net Winter Capacity With Natural Gas | 162 MW |
| Net Summer Capacity With Oil | 155 MW |
| Net Winter Capacity With Oil | 162 MW |
| Time To Switch From Gas To Oil | 1H |
| Time To Switch From Oil To Gas | 1H |
| Factors That Limit Switching | Yes |
| Air Permit Limits | Yes |
RockGen Energy Center Plant Owners
| Owner Name | Address | Generator | Ownership | We couldn't locate any owners for this plant |
|---|
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| Tyto Solar | Fitchburg, WI | 11.3 GWh | 16.6 mi |
| UW Kegonsa Customer Hosted Solar | Stoughton, WI | 1.6 GWh | 12.4 mi |
| Whitewater Generating Station | Whitewater, WI | 212.1 GWh | 18.2 mi |