Colstrip
1 Warehouse Road, Colstrip, MT 59323Plant Summary Information
Colstrip is ranked #6 out of 125 coal plants nationwide in terms of total annual net electricity generation.
Colstrip is comprised of 2 generators and generated 1.8 TWh during the 3-month period between November 2025 to February 2026.
| Plant Name | Colstrip |
|---|---|
| Utility Name | Talen Montana LLC |
| Location | Rosebud County, MT |
| Initial Operation Date | November 1975 |
| Last Update | Feb 2026 |
| Annual Generation | 8.7 TWh |
| Annual Consumption | 103.4 M MMBtu |
| Ranked #83 out of 12,637 Power Plants Nationwide | |
| Ranked #6 out of 125 Subbituminous Coal Power Plants Nationwide | |
| Ranked #1 out of 71 Montana Power Plants | |
| Ranked #1 out of 3 Montana Subbituminous Coal Power Plants | |
| Fuel Types | Subbituminous Coal : 99.9% |
| Previous Operator |
PPL Montana LLC (2013 to 2013) Talen Montana LLC (2014 to 2024) |
Map of Colstrip
Full Screen MapRegister Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Colstrip.
Monthly Net Generation for Colstrip
Monthly Plant Fuel Consumption for Colstrip
Colstrip Details
| Summary Information | |
|---|---|
| Plant Name | Colstrip (6076) |
| Plant Address | 1 Warehouse Road, Colstrip, MT 59323 |
| Utility | Talen Montana LLC (15298) |
| Latitude, Longitude | 45.8831, -106.614 |
| Generation Dates on File | Jan 2001 to Feb 2026 |
| Initial Operation Date | November 1975 |
| Annual Generation | 8.7 TWh |
| Fuel Types | Subbituminous Coal : 99.9% |
| 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 | 99-185-000 |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | WECC |
| Balancing Authority | NorthWestern Energy (NWMT) (NWMT) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | Yellowstone River |
| Ash Impoundment | Yes Lined Operating |
| Transmission / Distribution Owner | NorthWestern Energy LLC - (MT) (12825) MT |
| Grid Voltage | 230.00 kV / 500.00 kV |
| Energy Storage | No |
Generator 3 Details Operating January 1984
| Technology | Conventional Steam Coal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Jointly Owned |
| RTO ISO LMP Node Designation | NA |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | NA |
| Nameplate Capacity | 823.7 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 740 MW |
| Winter Capacity | 740 MW |
| Minimum Load | 200 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | January 1984 |
| Combined Heat & Power | No |
|---|---|
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Subbituminous Coal |
| Startup Source | Distillate Fuel Oil |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | OVER |
| Pulverized Coal Technology | Yes |
| Subcritical Technology | Yes |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Generator 4 Details Operating April 1986
| Technology | Conventional Steam Coal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Jointly Owned |
| RTO ISO LMP Node Designation | NA |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | NA |
| Nameplate Capacity | 823.7 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 740 MW |
| Winter Capacity | 740 MW |
| Minimum Load | 200 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | April 1986 |
| Combined Heat & Power | No |
|---|---|
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Subbituminous Coal |
| Startup Source | Distillate Fuel Oil |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | OVER |
| Pulverized Coal Technology | Yes |
| Subcritical Technology | Yes |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Colstrip Plant Owners
| Owner Name | Address | Generator | Ownership |
|---|---|---|---|
| Talen Montana LLC | 580 Willow Ave, Colstrip, MT 59323 | Generator 1 | 50.00% |
| Puget Sound Energy Inc | PO Box 97034 M/S BEL-10E, Bellevue, WA 98004 | Generator 1 | 50.00% |
| Talen Montana LLC | 580 Willow Ave, Colstrip, MT 59323 | Generator 2 | 50.00% |
| Puget Sound Energy Inc | PO Box 97034 M/S BEL-10E, Bellevue, WA 98004 | Generator 2 | 50.00% |
| PacifiCorp | 825 NE Multnomah, Suite 600, Portland, OR 97232 | Generator 3 | 10.00% |
| Portland General Electric Co | 121 SW Salmon Street, Portland, OR 97204 | Generator 3 | 20.00% |
| Talen Montana LLC | 580 Willow Ave, Colstrip, MT 59323 | Generator 3 | 30.00% |
| Puget Sound Energy Inc | PO Box 97034 M/S BEL-10E, Bellevue, WA 98004 | Generator 3 | 25.00% |
| Avista Corp | P O Box 3727 1411 East Mission, Spokane, WA 99220 | Generator 3 | 15.00% |
| NorthWestern Energy (MT Hydro) | 11 E. Park Street, Butte, MT 59701 | Generator 4 | 30.00% |
| PacifiCorp | 825 NE Multnomah, Suite 600, Portland, OR 97232 | Generator 4 | 10.00% |
| Portland General Electric Co | 121 SW Salmon Street, Portland, OR 97204 | Generator 4 | 20.00% |
| Puget Sound Energy Inc | PO Box 97034 M/S BEL-10E, Bellevue, WA 98004 | Generator 4 | 25.00% |
| Avista Corp | P O Box 3727 1411 East Mission, Spokane, WA 99220 | Generator 4 | 15.00% |
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Subbituminous Coal.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #1 | James H Miller Jr | Quinton, AL | 19.2 TWh |
| #2 | Labadie | Labadie, MO | 16.7 TWh |
| #3 | W A Parish | Thompsons, TX | 15.2 TWh |
| #4 | Monroe (MI) | Monroe, MI | 16.2 TWh |
| #5 | Rockport | Rockport, IN | 10.0 TWh |
| #7 | Laramie River Station | Wheatland, WY | 8.5 TWh |
| #8 | Martin Lake | Tatum, TX | 8.5 TWh |
| #9 | Fayette Power Project | La Grange, TX | 8.3 TWh |
| #10 | Jeffrey Energy Center | St. Mary's, KS | 8.1 TWh |
| #11 | Scherer | Juliette, GA | 7.8 TWh |
| #12 | Thomas Hill | Clifton Hill, MO | 7.3 TWh |
| #13 | Limestone | Jewett, TX | 7.3 TWh |
| #14 | Independence Steam Electric Station | Newark, AR | 7.0 TWh |
| #15 | Sherburne County | Becker, MN | 7.0 TWh |
| #16 | Gerald Gentleman | Sutherland, NE | 7.0 TWh |
| #17 | J H Campbell | West Olive, MI | 6.8 TWh |
| #18 | Nebraska City | Nebraska City, NE | 6.8 TWh |
| #19 | Shawnee | West Paducah, KY | 6.8 TWh |
| #20 | J K Spruce | San Antonio, TX | 6.6 TWh |
| #21 | New Madrid | New Madrid, MO | 6.5 TWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Colstrip.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Arvada | Arvada, WY | 199.0 MWh | 86 mi |
| Clearwater Wind East | Miles City, MT | 792.3 GWh | 69.1 mi |
| Clearwater Wind I | Miles City, MT | 1.3 TWh | 65.5 mi |
| Clearwater Wind II | Miles City, MT | 389.7 GWh | 67.7 mi |
| Clearwater Wind III | Miles City, MT | 365.7 GWh | 67.7 mi |
| Colstrip Energy LP | Colstrip, MT | 287.5 GWh | 6.7 mi |
| Dry Fork Station | Gillette, WY | 2.4 TWh | 117.5 mi |
| Glendive GT | Glendive, MT | 2.6 GWh | 120.4 mi |
| Hardin Generator Project | Hardin, MT | 481.0 GWh | 48.3 mi |
| Miles City GT | Miles City, MT | 331.0 MWh | 53.5 mi |
| MTSUN | Billings, MT | 144.3 GWh | 95.7 mi |
| Neil Simpson II | Gillette, WY | 660.9 GWh | 125.6 mi |
| South Mills Solar, LLC | Hardin, MT | 5.0 GWh | 50.2 mi |
| Western Sugar Cooperative - Billings | Billings, MT | 5.3 GWh | 91.1 mi |
| Wygen 1 | Gillette, WY | 521.2 GWh | 125.6 mi |
| Wygen 2 | Gillette, WY | 581.5 GWh | 125.3 mi |
| Wygen III | Gillette, WY | 670.7 GWh | 125.3 mi |
| Wyodak | Gillette, WY | 2.1 TWh | 125.4 mi |
| Yellowstone Energy LP | Billings, MT | 448.7 GWh | 87.4 mi |
| Yellowtail | Hardin, MT | 798.4 GWh | 76.2 mi |