Reliable Geothermal Energy for a Sustainable Future
1960-2025
Celebrating 65 years of rich history
13
Geothermal Power Plants owned and operated by Calpine
38
Megawatts of Battery Energy Storage System Projects at The Geysers
28,447
Acres (45 square miles) in Sonoma and Lake Counties and bordering Mendocino County
65
Years of Commercial Geothermal Operations at The Geysers
Geothermal Energy
The Geysers is the largest complex of geothermal power plants in the world. Calpine, the largest geothermal power producer in the U.S., owns and operates 13 power plants at The Geysers.
History
Calpine, in honoring the history of The Geysers from its original discovery to its development, continues to steward this amazing resource.
News & Updates
Social
Big milestone at the world’s largest operating geothermal energy complex. We’ve completed a 25 MW expansion at The Geysers, enough to power ~25,000 California homes with reliable, clean energy. 18 MW to @CleanPowerInfo, 7 MW already serving MCE.
The Geysers Geothermal Complex Completes 25-Megawatt Expansion Project, Strengthening California…
The addition builds on Calpine's continued investments in The Geysers to support California’s renewable energy goals.
www.constellationenergy.com
It was a pleasure showing Wesley Fink, a Field Representative for @SenAdamSchiff, and leaders from the Middletown Rancheria of Pomo Indians around The Geysers yesterday!
We had a great day spreading the word about geothermal.
Calpine was honored to attend the Geothermal Rising California Capitol Day to represent our work at The Geysers.
We particularly enjoyed spending time with @DianePapan, the “Queen of Geothermal!” 👑
With 70% of our team living in Lake County, it was an honor to attend Lakeport Unified School District’s Reach Higher Day.
We spent the day telling students why we chose to work at Calpine and gave them career and college advice. It was great to meet these young, bright minds!
Geothermal Visitor Center and Tours of The Geysers
Come visit the world’s largest producer of geothermal energy. Calpine offers free community tours on a preset, annual schedule.
