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Welcome to The Geysers
In the Mayacamas Mountains, located north of San Francisco, naturally occurring steam field reservoirs below the earth's surface are being harnessed by Calpine to make clean, green, renewable energy for homes and businesses across Northern California.
The Geysers, comprising 45 square miles along the Sonoma and Lake County border, is the largest complex of geothermal power plants in the world. Calpine, the largest geothermal power producer in the U.S., owns and operates 15 power plants at The Geysers with a net generating capacity of about 725 megawatts of electricity - enough to power 725,000 homes, or a city the size of San Francisco.
The Geysers meets the typical power needs of Sonoma, Lake, and Mendocino counties, as well a portion of the power needs of Marin and Napa counties. In fact, The Geysers satisfies nearly 60 percent of the average electricity demand in the North Coast region from the Golden Gate Bridge to the Oregon border. The Geysers is one of the most reliable energy sources in California delivering extremely high availability and on-line performance and accounts for one-fifth of the green power produced in California.

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Community Tours of The Geysers
Learn about renewable geothermal power with a free community tour of The Geysers. Click here for a quick look at tour dates, and click here to register for a tour online.
- Next tour: Friday, May 18, departing from Middletown.
Calpine’s and the U.S. Department of Energy’s Geysers Enhanced Geothermal System (EGS) Project
Public Meeting Notice:
Calpine Corporation will hold the next public informational meeting to report progress on construction of the EGS Demonstration Project currently underway at The Geysers on Saturday, June 16, at 9 a.m. A tour to the EGS site will follow.
Location:
Calpine Geothermal Visitors Center
15500 Central Park Road
Middletown, California
For more information about the public meetings: 707-987-4270 or CGVC@calpine.com
For more information on the EGS program: www.geothermal.energy.gov
To learn more about EGS, visit the Geothermal Technologies Program website at www.geothermal.energy.gov, email CGVC@calpine.com or click the links below to review public meeting presentations.
- August 18, 2011
- November 4, 2011
- March 13, 2012
Please check this space for regular updates about this ongoing project.
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Calpine is pleased to be a sponsor of the Climate Protection Campaign.
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