- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Geothermal 2: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Geothermal 2
Power plant · Geothermal
Key facts
Power plant · Geothermalran 33% of 2025 Out of service- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1985
- Net generation, 2025
- 321,675 MWh
- Grid
- 230 kV to Pacific Gas & Electric Co (CISO)
- Location
- Sonoma County, California
- Operated by
- Northern California Power AgnySourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 321,675
MWh - Fuel burned, 2025
- 1,097,554
MMBtu - Capacity factor, 2025
- 33.4
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2026 (8 of 12 months) | 209,290 | 714,098 | — | — |
| 2025 | 321,675 | 1,097,554 | 33.4% | — |
| 2024 | 363,338 | 1,239,709 | 37.6% | — |
| 2023 | 198,851 | 678,479 | 20.6% | — |
| 2022 | 275,929 | 941,470 | 28.6% | — |
| 2021 | 314,765 | 2,783,782 | 32.7% | — |
| 2020 | 284,372 | 2,493,090 | 29.4% | — |
| 2019 | 331,152 | 2,948,908 | 34.4% | — |
| 2018 | 352,294 | 3,207,285 | 36.6% | — |
| 2017 | 355,038 | 3,270,966 | 36.8% | — |
| 2016 | 343,787 | 3,173,842 | 35.6% | — |
| 2015 | 366,435 | 3,414,808 | 38.0% | — |
| 2014 | 371,135 | 3,529,492 | 38.5% | — |
| 2013 | 365,249 | 3,484,840 | 37.9% | — |
| 2012 | 416,598 | 3,964,347 | 43.1% | — |
| 2011 | 422,781 | 4,107,740 | 43.9% | — |
| 2010 | 390,061 | 3,805,435 | 40.5% | — |
| 2009 | 431,927 | 4,215,608 | 44.8% | — |
| 2008 | 452,385 | 4,457,802 | 46.8% | — |
| 2007 | 468,694 | 4,632,571 | 48.6% | — |
| 2006 | 449,079 | 4,454,415 | 46.6% | — |
| 2005 | 415,719 | 4,156,774 | 43.1% | — |
| 2004 | 521,451 | 5,225,982 | 54.0% | — |
| 2003 (11 of 12 months) | 516,374 | 5,288,186 | — | — |
| 2002 | 584,546 | 5,946,586 | 60.7% | — |
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.