The largest wastewater-to-electricity project in the world.
The Geysers pipeline project disposes of half the wastewater generated annually by Santa Rosa and its three partner cities, Rohnert Park, Cotati and Sebastopol. At the same time, the project helps breathe new life into power production at The Geysers, and extend its commercial life. Located within 30 square miles straddling the Lake and Sonoma county borders in northern California, The Geysers is the largest geothermal power operation in the world. With 21 power plants (19 owned by Calpine; two owned by the Northern California Power Agency), The Geysers produces nearly 1,000 megawatts (MW) of electricity, or enough to power a million homes. First commercially developed in the 1960s, The Geysers now satisfies much of the electrical power needs of Sonoma, Lake and Mendocino counties, as well as that of Marin and Napa counties.