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Daly City Today
By the People, for the People
California's $600M Battery to Power 321,000 Homes at Peak Demand
The new 250 MW/1,000 MWh Cormorant Energy Storage Project in Daly City will boost grid reliability by 2027.
Mar. 30, 2026 at 9:21pm
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A bold, abstract visualization of the Cormorant Energy Storage Project's massive scale and complex energy distribution system, designed to boost grid reliability in California.Daly City TodayArevon, a renewable energy developer, has started construction on a massive new battery project just south of San Francisco. The $600 million Cormorant Energy Storage Project will have a capacity of 250 MW/1,000 MWh and be able to power about 321,000 homes for up to four hours when it comes online in 2027. The project will use lithium iron phosphate (LFP) batteries and is expected to create around 175 jobs during construction.
Why it matters
As California continues to add more solar power to the grid, large-scale battery storage projects like Cormorant are crucial for balancing supply and demand in real-time and ensuring grid reliability, especially during peak usage periods. The project will also provide significant economic benefits to the local Daly City and Bayshore community.
The details
The Cormorant Energy Storage Project was originally planned at 188 MW/752 MWh but has now been expanded to 250 MW/1,000 MWh, with the added capacity also contracted to MCE, a public electricity provider serving over 1.8 million residents and businesses. Primoris Services Corporation's Renewables group is handling the engineering, procurement, and construction, and the project is expected to generate over $73 million in property tax revenue for local schools, infrastructure, and public services over its lifetime.
- Construction on the Cormorant Energy Storage Project began in 2026.
- The $600 million facility is expected to come online in 2027.
The players
Arevon
A renewable energy developer that is building the Cormorant Energy Storage Project.
MCE
A public electricity provider that serves more than 1.8 million residents and businesses across Contra Costa, Marin, Napa, and Solano counties, and has a long-term agreement with Arevon for the Cormorant project.
Primoris Services Corporation
The company's Renewables group is handling the engineering, procurement, and construction of the Cormorant Energy Storage Project.
What’s next
The Cormorant Energy Storage Project is expected to come online in 2027, providing much-needed grid reliability and storage capacity for California's growing renewable energy infrastructure.
The takeaway
The Cormorant Energy Storage Project represents a significant investment in California's clean energy future, showcasing the state's commitment to building a more resilient and sustainable electricity grid. The project's large-scale battery storage capacity will help integrate more renewable energy sources and ensure reliable power for hundreds of thousands of homes during peak demand periods.
