NCPA and Silicon Valley Power Execute 12-year Agreement with The Geysers Power Company, LLC for Renewable Geothermal Energy Supplied from the Geysers

The Northern California Power Agency (NCPA) is pleased to announce that it has signed a set of long-term Purchase Agreements with the Geysers Power Company, LLC, an indirect subsidiary of Calpine Corporation, to supply renewable geothermal energy and capacity to the City of Santa Clara’s public power utility Silicon Valley Power (SVP), and potentially other NCPA members, for the period of 2025-2036.

Under the Purchase Agreements, NCPA will purchase and receive clean, renewable energy produced from multiple Calpine geothermal power plants located in California’s Sonoma and Lake Counties for a period of 12 years. NCPA and Geysers Power Company, LLC both individually own and operate geothermal plants located in The Geysers area, which is one of the largest geothermal steam fields in the world.

The Purchase Agreements provide for the delivery of up to 50 megawatts (MW) of renewable energy and capacity during the period of 2025 through 2026. In 2027, the amount of renewable energy and capacity that will be delivered will increase to up to 100 MW through 2036. Each MW is capable of powering approximately 750 homes.

SVP is committed to securing its energy supply from renewable and emission-free sources. The public power system has a record of environmental stewardship and a deep commitment to addressing the challenge of climate change.

“NCPA was founded on the principle of environmental responsibility, and since its inception, the agency and its members have continued to lead the way in the development of clean and renewable resources,” said NCPA General Manager Randy S. Howard. “This long-term agreement to secure renewable baseload generation only furthers that objective, and will help to assure a continued supply of affordable and reliable power for SVP customers for many years to come.”

SVP’s Chief Utility Officer, Manuel Pineda, said, “With ongoing economic development, the demand for power supply in the City of Santa Clara only continues to grow. This agreement will help us power our community with an additional cost-effective investment in clean and renewable geothermal energy that aligns with our dedication to environmentally responsible generation resources.”

“Calpine is pleased to be working closely with NCPA, the City of Santa Clara, and the Northern California public power community. Together, we share a long-term vision for the sustainable operation of The Geysers” said Gevan Reeves, Vice President West Origination and Development for Calpine Corporation. “This important agreement with NCPA and the City of Santa Clara helps to support ongoing investment and innovation at The Geysers.”

About NCPA: Headquartered in Roseville, California, NCPA is a California joint powers agency established in 1968 to construct and operate electric generation facilities and assist in meeting the wholesale energy supply needs of its 16 members: the Cities of Alameda, Biggs, Gridley, Healdsburg, Lodi, Lompoc, Palo Alto, Redding, Roseville, Santa Clara, Shasta Lake, and Ukiah, Plumas-Sierra Rural Electric Cooperative, the Port of Oakland, San Francisco Bay Area Rapid Transit (BART), and Truckee Donner Public Utility District—collectively serving nearly 700,000 electric consumers in Central and Northern California. NCPA was founded on the principle of environmental stewardship and is a recognized national leader in the areas of energy efficiency, renewable generation, and carbon reduction.

About Silicon Valley Power: Silicon Valley Power (SVP) is the trademark adopted for use by the not-for-profit electric municipal utility of Santa Clara, CA, serving residents and businesses for over 125 years. SVP provides power to nearly 55,000 customers at rates 25 to 48 percent below neighboring communities. SVP is the only full-service, vertically integrated publicly owned utility in Silicon Valley—owning generation, transmission, and distribution assets. For more information, visit

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