#United States #Geothermal Energy #Middletown #The Geysers #Calpine

The Geysers Geothermal Complex Achieves 25-MW Expansion

Calpine, a division of Constellation, has recently finalized a pivotal 25-megawatt (MW) expansion project at The Geysers geothermal complex nestled in Sonoma County, California. This expansion is a crucial addition to Calpine's ongoing investment endeavors aimed at fortifying California's renewable energy targets. It comes on the heels of a previous development, a 38 MW energy storage system that became operational in 2024. The newly added capacity is projected to supply enough electricity to power over 25,000 homes annually.

The Necessity for Renewable Energy in California

As electricity demand in California continues to rise, investments in dependable and consistent renewable energy solutions are more essential than ever. Aimee Blaine, Calpine’s senior vice president of geothermal operations, stated, "The Geysers is among the most significant geothermal resources in the nation, and this expansion signifies our dedication to enhancing grid reliability while promoting California's clean energy objectives."

The Geysers stands out as the largest operating geothermal complex globally, having contributed clean, geothermal energy to California for over six decades. Out of the total capacity added, 18 MW will be allocated to the Clean Power Alliance (CPA), an entity that provides energy to various customers across Southern California. This initiative aligns with the growing demand for renewable power in the region. Concurrently, the remaining 7 MW, which were activated last year, will serve MCE, supporting Bay Area communities and businesses.

Matthew Langer, Chief Operating Officer of Clean Power Alliance, emphasized the importance of geothermal power in their renewable energy portfolio, stating, "Partnerships like this are vital in shaping California's future in clean energy while ensuring a more robust and sustainable power grid."

Commitment to Local Labor and Environmental Goals

The recent expansion at The Geysers was accomplished through a Project Labor Agreement (PLA) with local labor unions. This arrangement not only supports local workforce development but also guarantees that the project was executed by highly skilled workers abiding by strict labor standards for quality and safety. This approach underscores Calpine's commitment to local communities and responsible labor practices.

Geothermal energy stands out for its inherent environmental advantages. It helps California meet its clean air standards, operating continuously without being affected by environmental conditions like sunshine or wind, thus serving as a vital source of baseload renewable energy.

About Constellation and Clean Power Alliance

Constellation Energy Corporation, a Fortune 200 company based in Baltimore, is recognized as the largest private-sector power generator globally. Harnessing a portfolio that exceeds 55 gigawatts of capacity across diverse energy sources, including nuclear, natural gas, oil, geothermal, hydro, wind, and solar, Constellation plays a significant role in supplying approximately 10% of the nation’s clean power. It serves around 2.5 million customers, including a substantial portion of Fortune 100 companies.

The Clean Power Alliance, on the other hand, operates as a locally governed, non-profit electricity supplier serving 38 communities within Los Angeles and Ventura counties. Recognized as California’s third-largest electricity provider and the top green power supplier in the U.S., CPA focuses on delivering competitive clean energy solutions while promoting sustainability and innovation across its service areas.

In conclusion, the successful completion of this 25 MW expansion at The Geysers is not just a remarkable achievement for Calpine; it is a significant step toward advancing California’s renewable energy landscape and ensuring reliable power for its residents.