Explore the largest geothermal power plants in California and see all the utility-scale geothermal projects in California on a map.
Last updated: May 2026
On this page, you can explore our real-time database of geothermal power plants in California. Each month, we track geothermal projects and update our list of the largest geothermal power plants in California.
As of May 2026, there are 32 utility-scale geothermal power plants in California, according to Cleanview's project tracker. Their total operating capacity is 2,936 MW. In 2025, there was 1 geothermal power plant built in California.
Total Geothermal Power Plants
32
Total Capacity
2,936 MW
Built in 2025
1
Map of geothermal power plants in California. Marker size reflects capacity — only facilities with reported capacity data are shown.
1,236 MW
Year Operational: October 1985
Location: Sonoma, California
176 MW
Year Operational: March 1984
Location: Lake, California
110 MW
Year Operational: January 1983
Location: Sonoma, California
110 MW
Year Operational: May 1986
Location: Sonoma, California
92 MW
Year Operational: November 1988
Location: Inyo, California
92 MW
Year Operational: September 2023
Location: Imperial, California
90 MW
Year Operational: December 1989
Location: Inyo, California
90 MW
Year Operational: August 1989
Location: Inyo, California
80 MW
Year Operational: October 2009
Location: Imperial, California
19 MW
Year Operational: February 2025
Location: Imperial, California
92 MW
Year Operational: September 2023
Location: Imperial, California
75 MW
Year Operational: November 2022
Location: Imperial, California
44 MW
Year Operational: July 2022
Location: Mono, California
46 MW
Year Operational: April 2020
Location: Imperial, California
55 MW
Year Operational: March 2012
Location: Imperial, California
80 MW
Year Operational: October 2009
Location: Imperial, California
24 MW
Year Operational: April 2007
Location: Imperial, California
12 MW
Year Operational: July 2000
Location: Imperial, California
Cleanview