Over 75,000 Bay Area Homes Power Up with California’s Biggest Solar-Plus-Storage Project

Over 75,000 Bay Area Homes Power Up with California’s Biggest Solar-Plus-Storage Project

110 MW Solar, 60 MW Battery Storage Added to MCE’s Portfolio

October 18, 2023

Press Contact:
Jackie Nuñez, Bilingual Communications Manager
(925) 695-2124 | communications@mceCleanEnergy.org

SAN RAFAEL and CONCORD, Calif. — MCE is officially powering up its first utility-scale solar-plus-storage project; one of the largest operating solar and storage hybrid facilities in the country.

Clearway’s Daggett Solar-Plus-Storage in San Bernardino County generates 482 MW of solar, combined with 280 MW of energy storage. It supplies enough energy to power more than 181,000 homes. The project will store and deploy solar power when it’s needed the most to support a reliable grid.

MCE – Dawn Weisz

“Flipping the switch on our first solar-plus-storage project is a huge milestone for MCE,” said MCE’s CEO, Dawn Weisz. “The more we can couple solar with battery storage, the more renewable energy we can harness to maintain a reliable energy supply. This is yet another significant stride toward advancing California’s clean energy transition while supporting green jobs.”

Built in partnership with I.B.E.W. Local 477, the project created over 500 union jobs during construction.


“The Daggett Solar-Plus-Storage project embodies the path we’re on to California’s clean and reliable energy future,” said Craig Cornelius, CEO of Clearway Energy Group. “The project has brought a billion-dollar investment to an energy transition community and will provide clean, reliable, and low-cost power to California homes and businesses for years to come.”

The Daggett Solar-Plus-Storage project:

  • Added 110 MW of solar and 60 MW (4-hour) of battery storage to MCE’s energy portfolio, enough to power over 75,000 homes, in August 2023; and
  • Is contracted with five other energy providers aside from MCE.

MCE plans to add a second solar-plus-storage project to its portfolio with Clearway’s Golden Fields project in Kern County, California, in 2025.

Get the project details at https://www.daggettsolar.com/about.


About MCE: MCE is a not-for-profit public agency and the preferred electricity provider for more than 585,000 customer accounts and 1.5 million residents and businesses across Contra Costa, Marin, Napa, and Solano counties. Setting the standard for clean energy in California since 2010, MCE leads with 60-100% renewable power at stable rates, delivering a 1,200 MW peak load and significantly reducing greenhouse emissions and reinvesting millions in local programs. For more information about MCE, visit mceCleanEnergy.org, or follow us on your preferred social platform @mceCleanEnergy.

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