United States of America

Calistoga Power Plant— 176.4 MW Geothermal

GeothermalRenewableVerified: Jul 2026

→ More Geothermal plants in United States of America

CompareView on Map

Calistoga Power Plant holds the distinction of being the second largest geothermal facility in the United States, ranking 1514th out of over 10,000 power generation facilities nationwide. With a capacity of 176.4 MW, it contributes a vital portion to the renewable energy landscape, especially in a country where gas-fired plants dominate the energy supply. Commissioned in 1984 and operated by Geysers Power Co LLC, this geothermal facility represents just 0.01% of the total national capacity, yet plays a significant role in harnessing the Earth's heat for sustainable electricity generation. The technology employed at Calistoga Power Plant taps into geothermal energy, utilizing steam from underground reservoirs to drive turbines and generate electricity. This method not only provides a continuous source of power but also minimizes emissions compared to traditional fossil fuel sources. The facility is part of a broader geothermal cluster in the region, with nearby plants such as Geysers Unit 5-20 (with a capacity of 1163 MW) and Geothermal 1 and 2 (both at 110 MW) significantly surpassing Calistoga's output. This cluster exemplifies the strength of geothermal energy in California, where multiple facilities work in concert to meet energy demands. Positioned in a state known for its ambitious renewable energy goals, Calistoga Power Plant's geothermal capacity is particularly valuable. The total energy landscape in the U.S. boasts approximately 1,386,385 MW, with a heavy reliance on gas as the dominant fuel. While geothermal energy represents a smaller segment of this mix, facilities like Calistoga contribute to diversifying energy sources and reducing greenhouse gas emissions. The ownership by Geysers Power Co LLC reflects a dedicated commitment to enhancing geothermal power's role in the energy portfolio. Since its commissioning, the plant has played a pivotal role in showcasing the potential of geothermal resources in the region. As the demand for clean energy continues to rise, the significance of Calistoga Power Plant will likely increase, serving not only as a power source but also as a symbol of the potential for renewable energy development. In the face of climate change and the urgent need for sustainable energy solutions, Calistoga Power Plant stands as a testament to the efficacy of geothermal energy. Its continued operation and potential for expansion may play a crucial role in California's transition to a greener future, highlighting the importance of harnessing the earth's natural resources responsibly.