Geothermal Power Plants in the United States
Every operating geothermal power plant the US Energy Information Administration lists on form EIA-860M, plotted on one map of the United States and listed in full: 66 plants, 175 generating units, 4 GW of nameplate capacity across 7 states.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Plants
- 66
- 175 generating units
- Nameplate capacity
- 4 GW
- States
- 7
- Grid operator
- Mixed
- no single ISO covers a majority
Map of geothermal power plants in the United States
Every one of the 66 plants is drawn at the coordinate EIA files for it.
Loading map…
- Geothermal · 66
List of geothermal power plants in the United States
Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.
| Geysers Unit 5-20Geothermal | Geysers Power Co LLC | Sonoma | 1,236 | 12 | 1971 | Operating |
| Calistoga Power PlantGeothermal | Geysers Power Co LLC | Lake | 176.4 | 2 | 1984 | Operating |
| Geothermal 1Geothermal | Northern California Power Agny | Sonoma | 110 | 2 | 1983 | Operating |
| Geothermal 2Geothermal | Northern California Power Agny | Sonoma | 110 | 2 | 1985 | Out of service and NOT expected to return to service in next calendar year |
| McGinness HillsGeothermal | Ormat Nevada Inc | Lander | 104 | 6 | 2012 | Operating |
| McGinness Hills 3Geothermal | Ormat Nevada Inc | Lander | 98.8 | 3 | 2018 | Operating |
| Coso Finance PartnersGeothermal | Coso Operating Co LLC | Inyo | 92.2 | 3 | 1987 | Operating |
| Heber GeothermalGeothermal | ORCAL Geothermal, Inc | Imperial | 91.5 | 5 | 2006 | Operating |
| Coso Power DevelopersGeothermal | Coso Operating Co LLC | Inyo | 90 | 3 | 1989 | Operating |
| Coso Energy DevelopersGeothermal | Coso Operating Co LLC | Inyo | 90 | 3 | 1988 | Operating |
| North Brawley Geothermal PlantGeothermal | Ormat Nevada Inc | Imperial | 80 | 5 | 2009 | Out of service and NOT expected to return to service in next calendar year |
| Sonoma California GeothermalGeothermal | Geysers Power Co LLC | Lake | 78 | 1 | 1983 | Operating |
| Tungsten Mountain2 technologies | Tungsten Mountain | Churchill | 74.8 | 4 | 2017 | Operating |
| Second Imperial GeothermalGeothermal | ORCAL Geothermal, Inc | Imperial | 74.5 | 4 | 2006 | Operating |
| Dixie ValleyGeothermal | Ormat Nevada Inc | Churchill | 70.9 | 2 | 1988 | Operating |
| Stillwater Facility2 technologies | Ormat Stillwater LLC | Churchill | 69.2 | 5 | 2009 | Operating |
| Patua Acquisition Project, LLC2 technologies | Patua Acquisition Company, LLC | Churchill | 58.6 | 4 | 2013 | Operating |
| Salton Sea Power LLC - Unit 5Geothermal | CalEnergy Operating Corporation | Imperial | 58.3 | 1 | 2000 | Operating |
| Bottle Rock PowerGeothermal | Mayacma Geothermal | Lake | 55 | 1 | 1985 | Out of service and NOT expected to return to service in next calendar year |
| John L. Featherstone PlantGeothermal | Hudson Ranch Power I LLC | Imperial | 55 | 1 | 2012 | Operating |
| Salton Sea Power Gen Co - Unit 3Geothermal | CalEnergy Operating Corporation | Imperial | 53.9 | 1 | 1989 | Operating |
| Puna Geothermal Venture IGeothermal | Puna Geothermal Venture | Hawaii | 51 | 12 | 1992 | Operating |
| Salton Sea Power Gen Co - Unit 4Geothermal | CalEnergy Operating Corporation | Imperial | 47.5 | 1 | 1996 | Operating |
| Ormesa IIIGeothermal | Ormat Nevada Inc | Imperial | 45.6 | 3 | 1989 | Operating |
| CE LeathersGeothermal | CalEnergy Operating Corporation | Imperial | 45.5 | 1 | 1989 | Operating |
| Del Ranch CompanyGeothermal | CalEnergy Operating Corporation | Imperial | 45.5 | 1 | 1988 | Operating |
| Elmore CompanyGeothermal | CalEnergy Operating Corporation | Imperial | 45.5 | 1 | 1988 | Operating |
| NGP Blue Mountain I LLCGeothermal | NGP Blue Mountain I LLC | Humboldt | 45 | 3 | 2009 | Operating |
| CD4Geothermal | CD4 | Mono | 44.4 | 1 | 2022 | Operating |
| Vulcan-BN Geothermal Power CompanyGeothermal | CalEnergy Operating Corporation | Imperial | 39.6 | 2 | 1985 | Operating |
| BlundellGeothermal | PacifiCorp | Beaver | 38.1 | 2 | 1984 | Operating |
| Steamboat Hills LP2 technologies | Ormat Nevada Inc | Washoe | 37.2 | 4 | 2020 | Operating |
| North Valley2 technologies | North Valley | Washoe | 37 | 2 | 2023 | Operating |
| Beowawe2 technologies | Ormat Nevada Inc | Lander | 35 | 3 | 2024 | Operating |
| Neal Hot Springs Geothermal ProjectGeothermal | US Geothermal Inc. | Malheur | 33 | 3 | 2012 | Operating |
| Tuscarora Geothermal Power PlantGeothermal | Ormat Nevada Inc | Elko | 32 | 2 | 2012 | Operating |
| Galena 3 Geothermal Power PlantGeothermal | Ormat Nevada Inc | Washoe | 31.6 | 2 | 2018 | Operating |
| Brady2 technologies | Ormat Nevada Inc | Churchill | 29.5 | 3 | 2002 | Operating |
| Steamboat II2 technologies | Steamboat Development Corp | Washoe | 26.1 | 3 | 1992 | Operating |
| Steamboat III2 technologies | Steamboat Development Corp | Washoe | 26.1 | 3 | 1992 | Operating |
| Desert Peak Power PlantGeothermal | Ormat Nevada Inc | Lyon | 26 | 2 | 2006 | Operating |
| Richard Burdette GeothermalGeothermal | Ormat Nevada Inc | Washoe | 26 | 2 | 2005 | Operating |
| Soda Lake 3Geothermal | AMOR IX, LLC | Churchill | 26 | 1 | 2019 | Operating |
| Aidlin Geothermal Power PlantGeothermal | Geysers Power Co LLC | Sonoma | 25 | 2 | 1989 | Operating |
| Cove FortGeothermal | Ormat Cove Fort LLC | Beaver | 25 | 2 | 2013 | Operating |
| Ormesa IIGeothermal | Ormat Nevada Inc | Imperial | 24 | 2 | 1989 | Operating |
| Salt WellsGeothermal | Ormat Salt Wells LLC | CHURCHILL | 23.6 | 2 | 2009 | Operating |
| Jersey Valley Geothermal Power PlantGeothermal | Ormat Nevada Inc | Pershing | 23.5 | 2 | 2010 | Operating |
| Star Peak Geothermal PlantGeothermal | Star Peak Geothermal LLC. | Pershing | 21.9 | 5 | 2022 | Operating |
| Geo East Mesa IIGeothermal | Ormat Nevada Inc | Imperial | 21.6 | 1 | 1989 | Out of service and NOT expected to return to service in next calendar year |
| Salton Sea Power Gen Co - Unit 2Geothermal | CalEnergy Operating Corporation | Imperial | 20 | 3 | 1990 | Operating |
| Don A Campbell 1 GeothermalGeothermal | ORNI 47, LLC | Mineral | 20 | 1 | 2014 | Operating |
| Don A Campbell 2 GeothermalGeothermal | ORNI 37 LLC | Mineral | 20 | 1 | 2015 | Operating |
| Lightning Dock GeothermalGeothermal | Lightning Dock Geothermal HI-01, LLC | Hidalgo | 19.2 | 5 | 2013 | Operating |
| Ormesa IGeothermal | Ormat Nevada Inc | Imperial | 19 | 2 | 2003 | Operating |
| Galena 2 Geothermal Power Plant2 technologies | Ormat Nevada Inc | Washoe | 16.5 | 2 | 2007 | Operating |
| Raft River Geothermal Power PlantGeothermal | US Geothermal Inc. | Cassia | 16 | 1 | 2025 | Operating |
| Mammoth G3Geothermal | Ormat Nevada Inc | Mono | 15 | 3 | 1990 | Operating |
| Mammoth G2Geothermal | Ormat Nevada Inc | Mono | 15 | 3 | 1990 | Operating |
| Thermo No 1Geothermal | Thermo No 1 BE 01 LLC | Beaver | 14 | 1 | 2013 | Operating |
| San EmidioGeothermal | USG Nevada LLC | Washoe | 11.8 | 1 | 2012 | Operating |
| CE Turbo LLCGeothermal | CalEnergy Operating Corporation | Imperial | 11.5 | 1 | 2000 | Operating |
| Mammoth G1Geothermal | Ormat Nevada Inc | Mono | 10 | 2 | 1984 | Operating |
| Salton Sea Power Gen Co - Unit 1Geothermal | CalEnergy Operating Corporation | Imperial | 10 | 1 | 1982 | Operating |
| Whitegrass No. 1Geothermal | Open Mountain Energy LLC. | Lyon | 6.4 | 4 | 2018 | Operating |
| Paisley Geothermal Generating PlantGeothermal | Surprise Valley Electrification | Lake | 3.7 | 1 | 2015 | Out of service and NOT expected to return to service in next calendar year |
Largest geothermal power plants in the United States
- 1Geysers Unit 5-20Sonoma County, California1,236 MW
- 2Calistoga Power PlantLake County, California176.4 MW
- 3Geothermal 1Sonoma County, California110 MW
- 4Geothermal 2Sonoma County, California110 MW
- 5McGinness HillsLander County, Nevada104 MW
- 6McGinness Hills 3Lander County, Nevada98.8 MW
- 7Coso Finance PartnersInyo County, California92.2 MW
- 8Heber GeothermalImperial County, California91.5 MW
- 9Coso Power DevelopersInyo County, California90 MW
- 10Coso Energy DevelopersInyo County, California90 MW
Geothermal power plants by state
Every state EIA-860M reports for this fuel. Each links to that state’s own map and list.
- geothermal power plants in California32 plants · 3 GW
- geothermal power plants in Nevada26 plants · 998 MW
- geothermal power plants in Utah3 plants · 77 MW
- geothermal power plants in Hawaii1 plants · 51 MW
- geothermal power plants in Oregon2 plants · 37 MW
- geothermal power plants in New Mexico1 plants · 19 MW
- geothermal power plants in Idaho1 plants · 16 MW
Geothermal Power Plants in the United States: FAQ
- Where can I find a map of geothermal power plants in the United States?
- The map on this page. It plots every one of the 66 operating geothermal power plants in the US that EIA-860M reports for 2026-07, at the coordinates EIA files for each plant. It is a US map: EIA-860M covers the fifty states and DC, so a North American map including Canada and Mexico is out of scope here.
- How many geothermal power plants are there in the US?
- 66, totalling 4 GW of nameplate capacity across 175 generating units in 7 states. That is the EIA-860M count for 2026-07; EIA technology "Geothermal".
- Is there a geothermal power plant near me?
- Pick your state from the list below to get the geothermal power plants in it, with the county each one sits in. The nearest plant to any address is whichever of those is closest — this site does not read your location.
- What is the largest geothermal power plant in the USA?
- Geysers Unit 5-20 in California, at 1 GW of nameplate capacity. The full list on this page is sorted largest first.
- Where does this data come from, and how current is it?
- The US Energy Information Administration's form EIA-860M, the preliminary monthly electric generator inventory, for 2026-07. It is a survey of plants of 1 MW and above; anything smaller is not in it, and nothing on this page is estimated to fill that gap.