Coso Power Developers
PO Box 1690, Inyokern, CA 93527Plant Summary Information
Coso Power Developers is ranked #13 out of 62 geothermal power plants nationwide in terms of total annual net electricity generation.
Coso Power Developers is comprised of 3 generators and generated 88.0 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Coso Power Developers |
|---|---|
| Utility Name | Coso Operating Co LLC |
| Location | Inyo County, CA |
| Initial Operation Date | November 1989 |
| Last Update | Dec 2025 |
| Annual Generation | 315.1 GWh |
| Annual Consumption | 1.2 M MMBtu |
| Ranked #1,920 out of 12,613 Power Plants Nationwide | |
| Ranked #13 out of 62 Geothermal Power Plants Nationwide | |
| Ranked #163 out of 1,603 California Power Plants | |
| Ranked #10 out of 29 California Geothermal Power Plants | |
| Fuel Types | Geothermal |
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Monthly Net Generation for Coso Power Developers
Monthly Plant Fuel Consumption for Coso Power Developers
Coso Power Developers Details
| Summary Information | |
|---|---|
| Plant Name | Coso Power Developers (10874) |
| Plant Address | PO Box 1690, Inyokern, CA 93527 |
| Utility | Coso Operating Co LLC (4397) |
| Latitude, Longitude | 36.0192, -117.7917 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | November 1989 |
| Annual Generation | 315.1 GWh |
| Fuel Types | Geothermal |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | QF86-591-003 |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | WECC |
| Balancing Authority | California Independent System Operator (CISO) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | Wells |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Southern California Edison Co (17609) CA |
| Grid Voltage | 230.00 kV |
| Energy Storage | No |
Generator GEN4 Details Operating November 1989
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 30 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 30 MW |
| Winter Capacity | 30 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | November 1989 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Geothermal |
| Startup Source | Geothermal |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
Generator GEN5 Details Operating December 1989
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 30 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 23.4 MW |
| Winter Capacity | 27 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 1989 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Geothermal |
| Startup Source | Geothermal |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
Generator GEN6 Details Operating December 1989
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 30 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 26.9 MW |
| Winter Capacity | 29 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 1989 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Geothermal |
| Startup Source | Geothermal |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
Coso Power Developers Plant Owners
| Owner Name | Address | Generator | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Geothermal.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #3 | Calistoga Power Plant | Middletown, CA | 454.7 GWh |
| #4 | Sonoma California Geothermal | Middletown, CA | 447.6 GWh |
| #5 | McGinness Hills 3 | Austin, NV | 434.4 GWh |
| #6 | John L. Featherstone Plant | Calipatria, CA | 433.1 GWh |
| #7 | Dixie Valley | Fallon, NV | 422.7 GWh |
| #8 | Heber Geothermal | Heber, CA | 384.9 GWh |
| #9 | Coso Finance Partners | Inyokern, CA | 365.0 GWh |
| #10 | Geothermal 1 | Middletown, CA | 338.4 GWh |
| #11 | Del Ranch Company | Calipatria, CA | 326.3 GWh |
| #12 | Geothermal 2 | Middletown, CA | 321.7 GWh |
| #14 | Salton Sea Power Gen Co - Unit 3 | Calipatria, CA | 314.9 GWh |
| #15 | Second Imperial Geothermal | Heber, CA | 302.3 GWh |
| #16 | Salton Sea Power LLC - Unit 5 | Calipatria, CA | 290.3 GWh |
| #17 | CD4 | Mammoth Lakes, CA | 276.9 GWh |
| #18 | Blundell | Milford, UT | 272.5 GWh |
| #19 | Puna Geothermal Venture I | Pahoa, HI | 258.9 GWh |
| #20 | Tungsten Mountain | Fallon, NV | 277.1 GWh |
| #21 | Coso Energy Developers | Inyokern, CA | 244.2 GWh |
| #22 | Steamboat Hills LP | Reno, NV | 231.7 GWh |
| #23 | Vulcan-BN Geothermal Power Company | Calipatria, CA | 227.2 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Coso Power Developers.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Argus Cogen Plant | Trona, CA | 246.6 GWh | 28.8 mi |
| Beacon Solar Plant Site 2 | Cantil, CA | 112.3 GWh | 53.3 mi |
| Beacon Solar Plant Site 5 | Cantil, CA | 88.5 GWh | 54.9 mi |
| Coso Energy Developers | Inyokern, CA | 244.2 GWh | 1.2 mi |
| Coso Finance Partners | Inyokern, CA | 365.0 GWh | 1.3 mi |
| Cottonwood | Lone Pine, CA | 2.1 GWh | 32.5 mi |
| Eland Solar & Storage Center, Phase 1 Hy | Mojave, CA | 684.0 GWh | 55.9 mi |
| Haiwee | Olancha, CA | 5.1 GWh | 11.1 mi |
| Hecate Energy Beacon Solar 1 | Cantil, CA | 128.7 GWh | 53.3 mi |
| Hecate Energy Beacon Solar 3 | Cantil, CA | 122.1 GWh | 54.4 mi |
| Hecate Energy Beacon Solar 4 | Cantil, CA | 115.9 GWh | 54.5 mi |
| Isabella Hydro Project | Lake Isabella, CA | 43.0 GWh | 46.5 mi |
| Kern River 3 | Kernville, CA | 142.8 GWh | 39.8 mi |
| Munro Valley Solar | Olancha, CA | 10.7 GWh | 20.4 mi |
| Naval Air Weapons Station China Lake | Ridgecrest, CA | 22.0 GWh | 23.7 mi |
| North Sky River Energy LLC | Weldon, CA | 435.0 GWh | 51.4 mi |
| Owens Valley Solar Project 11 | Olancha, CA | 3.0 GWh | 21.5 mi |
| Springbok Solar Farm 1 | Cantil, CA | 297.7 GWh | 54 mi |
| Springbok Solar Farm 2 | Cantil, CA | 399.0 GWh | 54.2 mi |
| Trona Solar III | Trona, CA | 4.5 GWh | 28.8 mi |