- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Coso Power Developers: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Coso Power Developers
Power plant · Geothermal
Key facts
Power plant · Geothermalran 40% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1989
- Net generation, 2025
- 315,145 MWh
- Grid
- 230 kV to Southern California Edison Co (CISO)
- Location
- Inyo County, California
- Operated by
- Coso Operating Co LLCSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 315,145
MWh - Fuel burned, 2025
- 1,075,275
MMBtu - Capacity factor, 2025
- 40.0
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2026 (8 of 12 months) | 200,784 | 685,076 | — | — |
| 2025 | 315,145 | 1,075,275 | 40.0% | — |
| 2024 | 310,015 | 1,057,769 | 39.2% | — |
| 2023 | 363,949 | 1,241,795 | 46.2% | — |
| 2022 | 386,020 | 1,317,100 | 49.0% | — |
| 2021 | 364,493 | 3,223,576 | 46.2% | — |
| 2020 | 396,781 | 3,478,580 | 50.2% | — |
| 2019 | 408,892 | 3,641,184 | 51.9% | — |
| 2018 | 410,113 | 3,733,669 | 52.0% | — |
| 2017 | 404,007 | 3,722,116 | 51.2% | — |
| 2016 | 473,756 | 4,373,714 | 59.9% | — |
| 2015 | 439,325 | 4,094,070 | 55.7% | — |
| 2014 | 449,159 | 4,271,502 | 57.0% | — |
| 2013 | 488,709 | 4,662,771 | 62.0% | — |
| 2012 | 527,009 | 5,015,017 | 66.7% | — |
| 2011 | 532,752 | 5,176,219 | 67.6% | — |
| 2010 | 586,470 | 5,721,602 | 74.4% | — |
| 2009 | 576,508 | 5,626,718 | 73.1% | — |
| 2008 | 574,592 | 5,662,030 | 72.7% | — |
| 2007 | 586,613 | 5,798,083 | 74.4% | — |
| 2006 | 642,761 | 6,375,546 | 81.5% | — |
| 2005 | 695,314 | 6,952,445 | 88.2% | — |
| 2004 | 746,490 | 7,481,323 | 94.4% | — |
| 2003 | 734,767 | 7,524,748 | 93.2% | — |
| 2002 | 774,362 | 7,877,585 | 98.2% | — |
| 2001 | 783,127 | 8,092,047 | 99.3% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)