Geothermal 2
12000 Ridge Road, Middletown, CA 95461Plant Summary Information
Geothermal 2 is ranked #12 out of 62 geothermal power plants nationwide in terms of total annual net electricity generation.
Geothermal 2 is comprised of 2 generators and generated 86.7 GWh during the 3-month period between June 2025 to September 2025.
| Plant Name | Geothermal 2 |
|---|---|
| Utility Name | Northern California Power Agny |
| Location | Sonoma County, CA |
| Initial Operation Date | December 1985 |
| Last Update | Sep 2025 |
| Annual Generation | 316.7 GWh |
| Annual Consumption | 1.2 M MMBtu |
| Ranked #1,901 out of 12,539 Power Plants Nationwide | |
| Ranked #12 out of 62 Geothermal Power Plants Nationwide | |
| Ranked #161 out of 1,600 California Power Plants | |
| Ranked #9 out of 29 California Geothermal Power Plants | |
| Fuel Types | Geothermal |
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Monthly Net Generation for Geothermal 2
Geothermal 2 Details
| Summary Information | |
|---|---|
| Plant Name | Geothermal 2 (7369) |
| Plant Address | 12000 Ridge Road, Middletown, CA 95461 |
| Utility | Northern California Power Agny (40613) |
| Latitude, Longitude | 38.7492, -122.7117 |
| Generation Dates on File | Jan 2002 to Sep 2025 |
| Initial Operation Date | December 1985 |
| Annual Generation | 316.7 GWh |
| Fuel Types | Geothermal |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | California Independent System Operator (CISO) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Geothermal Condensate |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Pacific Gas & Electric Co (14328) CA |
| Grid Voltage | 230.00 kV |
| Energy Storage | No |
Generator 3 Details Standby December 1985
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 55 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 25 MW |
| Winter Capacity | 26 MW |
| Minimum Load | 10 MW |
| Uprate/Derate Completed | No |
| Status | Standby |
|---|---|
| Synchronized To Transmission Grid | No |
| First Operation Date | December 1985 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Geothermal |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | OVER |
| Multiple Fuels | No |
Generator 4 Details Operating May 1986
| Technology | Geothermal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 55 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 40 MW |
| Winter Capacity | 41 MW |
| Minimum Load | 10 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | May 1986 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Geothermal |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
Geothermal 2 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 |
|---|---|---|---|
| #2 | McGinness Hills | Austin, NV | 602.8 GWh |
| #3 | Calistoga Power Plant | Middletown, CA | 456.5 GWh |
| #4 | Sonoma California Geothermal | Middletown, CA | 447.6 GWh |
| #5 | John L. Featherstone Plant | Calipatria, CA | 434.6 GWh |
| #6 | McGinness Hills 3 | Austin, NV | 404.5 GWh |
| #7 | Heber Geothermal | Heber, CA | 384.9 GWh |
| #8 | Coso Finance Partners | Inyokern, CA | 370.1 GWh |
| #9 | Geothermal 1 | Middletown, CA | 368.8 GWh |
| #10 | Dixie Valley | Fallon, NV | 365.6 GWh |
| #11 | Del Ranch Company | Calipatria, CA | 326.3 GWh |
| #13 | Salton Sea Power Gen Co - Unit 3 | Calipatria, CA | 314.9 GWh |
| #14 | Second Imperial Geothermal | Heber, CA | 302.3 GWh |
| #15 | Coso Power Developers | Inyokern, CA | 299.2 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 | Tungsten Mountain | Fallon, NV | 291.4 GWh |
| #20 | Puna Geothermal Venture I | Pahoa, HI | 258.9 GWh |
| #21 | Coso Energy Developers | Inyokern, CA | 244.2 GWh |
| #22 | Steamboat Hills LP | Reno, NV | 231.7 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Geothermal 2.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Aidlin Geothermal Power Plant | Middletown, CA | 81.3 GWh | 10.8 mi |
| ASTI | Cloverdale, CA | 1.2 GWh | 14.2 mi |
| Beringer | Saint Helena, CA | 1.4 GWh | 20.7 mi |
| Bodega Avenue Solar LLC | Petaluma, CA | 4.5 GWh | 33.7 mi |
| Calistoga Power Plant | Middletown, CA | 456.5 GWh | 3.2 mi |
| Cloverdale Solar Center | Cloverdale, CA | 2.1 GWh | 16.7 mi |
| Cloverdale Solar I | Cloverdale, CA | 2.2 GWh | 16.6 mi |
| Dissigno Healdsburg FPV, LLC | Healdsburg, CA | 6.0 GWh | 14.1 mi |
| Geothermal 1 | Middletown, CA | 368.8 GWh | 0.5 mi |
| Geysers Unit 5-20 | Middletown, CA | 4.4 TWh | 2.6 mi |
| Indian Valley Dam Hydro Project | Clearlake Oaks, CA | 6.0 GWh | 24.7 mi |
| Keysight - Santa Rosa | Santa Rosa, CA | 12.8 GWh | 18.5 mi |
| Laguna Water Reclamation Facility | Santa Rosa, CA | 11.2 GWh | 26.4 mi |
| Monticello Dam | Winters, CA | 36.4 GWh | 36.6 mi |
| Santa Rosa Junior College Petaluma Solar | Petaluma, CA | 1.8 GWh | 19.4 mi |
| Sonoma California Geothermal | Middletown, CA | 447.6 GWh | 3.7 mi |
| Sonoma Central Landfill Phase I | Petaluma, CA | 5.6 GWh | 31 mi |
| Sonoma Central Landfill Phase II | Petaluma, CA | 5.0 GWh | 31 mi |
| Sutter Santa Rosa Solar | Santa Rosa, CA | 2.3 GWh | 17.7 mi |
| Windsor Floating Solar | Windsor, CA | 2.5 GWh | 15.5 mi |