Coso Energy Developers
PO Box 1690, Inyokern, CA 93527Plant Summary Information
Coso Energy Developers is ranked #23 out of 63 geothermal power plants nationwide in terms of total annual net electricity generation.
Coso Energy Developers is comprised of 3 generators and generated 63.0 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Coso Energy Developers |
|---|---|
| Utility Name | Coso Operating Co LLC |
| Location | Inyo County, CA |
| Initial Operation Date | December 1988 |
| Last Update | Dec 2025 |
| Annual Generation | 235.0 GWh |
| Annual Consumption | 867.9 k MMBtu |
| Ranked #2,340 out of 13,081 Power Plants Nationwide | |
| Ranked #23 out of 63 Geothermal Power Plants Nationwide | |
| Ranked #235 out of 1,606 California Power Plants | |
| Ranked #18 out of 30 California Geothermal Power Plants | |
| Fuel Types | Geothermal |
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Monthly Net Generation for Coso Energy Developers
Monthly Plant Fuel Consumption for Coso Energy Developers
Coso Energy Developers Details
| Summary Information | |
|---|---|
| Plant Name | Coso Energy Developers (10875) |
| Plant Address | PO Box 1690, Inyokern, CA 93527 |
| Utility | Coso Operating Co LLC (4397) |
| Latitude, Longitude | 36.0019, -117.7886 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | December 1988 |
| Annual Generation | 235.0 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 GEN7 Details Operating December 1988
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 30 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 21.8 MW |
| Winter Capacity | 26.1 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 1988 |
| 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 GEN8 Details Operating December 1988
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 30 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 22.5 MW |
| Winter Capacity | 28.5 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 1988 |
| 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 GEN9 Details Operating August 1989
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 30 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 23.5 MW |
| Winter Capacity | 28.7 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | August 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 |
| Cofire Fuels | No |
Coso Energy 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 |
|---|---|---|---|
| #13 | Coso Power Developers | Inyokern, CA | 315.8 GWh |
| #14 | Geothermal 1 | Middletown, CA | 307.7 GWh |
| #15 | Del Ranch Company | Calipatria, CA | 297.8 GWh |
| #16 | Salton Sea Power LLC - Unit 5 | Calipatria, CA | 295.9 GWh |
| #17 | Salton Sea Power Gen Co - Unit 3 | Calipatria, CA | 288.8 GWh |
| #18 | Second Imperial Geothermal | Heber, CA | 275.2 GWh |
| #19 | Blundell | Milford, UT | 271.2 GWh |
| #20 | CE Leathers | Calipatria, CA | 270.5 GWh |
| #21 | Tungsten Mountain | Fallon, NV | 283.1 GWh |
| #22 | CD4 | Mammoth Lakes, CA | 236.3 GWh |
| #24 | Steamboat Hills LP | Reno, NV | 233.9 GWh |
| #25 | Vulcan-BN Geothermal Power Company | Calipatria, CA | 232.2 GWh |
| #26 | Puna Geothermal Venture I | Pahoa, HI | 207.9 GWh |
| #27 | North Valley | Gerlach, NV | 187.3 GWh |
| #28 | NGP Blue Mountain I LLC | Winnemucca, NV | 173.1 GWh |
| #29 | Beowawe | Beowawe, NV | 167.1 GWh |
| #30 | Neal Hot Springs Geothermal Project | Vale, OR | 152.3 GWh |
| #31 | Cove Fort | Cove Fort, UT | 142.1 GWh |
| #32 | Ormesa II | Holtville, CA | 131.7 GWh |
| #33 | Tuscarora Geothermal Power Plant | Tuscarora, NV | 119.8 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Coso Energy Developers.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Argus Cogen Plant | Trona, CA | 187.2 GWh | 28 mi |
| Beacon Solar Plant Site 2 | Cantil, CA | 107.0 GWh | 52.2 mi |
| Coso Finance Partners | Inyokern, CA | 363.8 GWh | 2.5 mi |
| Coso Power Developers | Inyokern, CA | 315.8 GWh | 1.2 mi |
| Cottonwood | Lone Pine, CA | 3.4 GWh | 33.7 mi |
| Haiwee | Olancha, CA | 11.0 GWh | 12 mi |
| Hecate Energy Beacon Solar 1 | Cantil, CA | 125.6 GWh | 52.2 mi |
| Hecate Energy Beacon Solar 3 | Cantil, CA | 118.9 GWh | 53.3 mi |
| Hecate Energy Beacon Solar 4 | Cantil, CA | 114.7 GWh | 53.4 mi |
| Isabella Hydro Project | Lake Isabella, CA | 32.1 GWh | 46 mi |
| Kern River 3 | Kernville, CA | 142.6 GWh | 39.5 mi |
| Munro Valley Solar | Olancha, CA | 8.7 GWh | 21.5 mi |
| Naval Air Weapons Station China Lake | Ridgecrest, CA | 24.2 GWh | 22.5 mi |
| North Sky River Energy LLC | Weldon, CA | 364.8 GWh | 50.4 mi |
| Owens Valley Solar Project 11 | Olancha, CA | 2.7 GWh | 22.6 mi |
| RB Inyokern Solar WDAT 1203 (CSG) | Ridgecrest, CA | 58.3 GWh | 23.9 mi |
| RB Inyokern Solar WDAT 1281 (CSG) | Ridgecrest, CA | 34.5 GWh | 23.7 mi |
| Springbok Solar Farm 1 | Cantil, CA | 280.4 GWh | 52.8 mi |
| Springbok Solar Farm 2 | Cantil, CA | 397.1 GWh | 53 mi |
| Trona Solar III | Trona, CA | 5.4 GWh | 28 mi |