Global Infrastructure SherpaHydrostor signs offtake agreement with California Community Power for 4 GWh A-CAES project
500 MW
Capacity
development
Stage
Willow Rock Energy Storage Center
Project
Hydrostor has signed a 50 MW/400 MWh offtake agreement with California Community Power (CC Power) for its Willow Rock Energy Storage Center project. The agreement secures storage capacity for six of CC Power’s community choice aggregator members. The 500 MW/4,000 MWh advanced compressed air energy storage (A-CAES) facility is designed to deliver eight hours of continuous discharge to the grid. The facility is expected to come online in 2030.
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Counterparts (10)
supplier
Chint Power
Chint Power is a global provider of smart energy solutions, focusing on power transmission and distribution, low voltage switchgear, instruments & meters, and EV charging. They offer solutions for power utilities, OEMs, telecom & data centers, new energy, industry, and buildings.
Tesla
Tesla is a technology company that focuses on electric vehicles, clean energy, and energy storage. They invest in and develop infrastructure projects related to their core business, including solar panels, energy storage systems, and electric vehicle charging stations.
Offtaker
Silicon Valley Clean Energy Authority
Silicon Valley Clean Energy (SVCE) is a public, not-for-profit agency providing clean electricity to residential and business customers across 13 Silicon Valley communities. SVCE focuses on reducing dependence on fossil fuels by providing carbon-free, affordable, and reliable electricity and reinvesting in the community through various programs.
California Community Power
California Community Power is a joint powers agency comprised of locally controlled, not-for-profit electricity providers. They focus on providing clean energy to communities in California.
San José Clean Energy
San José Clean Energy (SJCE) is a Community Choice Energy program committed to adding renewable energy to the grid and improving reliability. It sources and builds clean electricity for customers in San José, California, contributing to the city's carbon neutral goal by 2030.
Redwood Coast Energy Authority
Redwood Coast Energy Authority (RCEA) is a local government agency in Humboldt County, California, focused on providing clean, reliable electricity and energy efficiency programs. RCEA operates as a Community Choice Energy (CCE) provider, purchasing renewable energy for its customers and investing in local renewable energy projects.
CleanPowerSF
CleanPowerSF is a Community Choice Aggregation (CCA) program in San Francisco, offering renewable, affordable, and accessible energy to residents and businesses. It sources electricity from renewable sources like wind and solar and delivers it through PG&E's infrastructure, aiming to provide stable rates and invest in local clean energy projects.
Peninsula Clean Energy
Peninsula Clean Energy (PCE) is a community choice aggregator (CCA) serving San Mateo County and Los Banos, California. PCE provides cleaner electricity at more affordable rates than PG&E, with a focus on renewable energy sources and reinvesting surplus revenue into community benefits.
Valley Clean Energy Authority
Valley Clean Energy is a locally governed not-for-profit electricity provider for Davis, Woodland, Winters, and unincorporated Yolo County. They provide cleaner electricity and reinvest program profits into energy-related programs that benefit their communities.
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Sign up free →Deal Analysis
Hydrostor's offtake agreement with California Community Power (CC Power) for the Willow Rock Energy Storage Center represents a significant step forward in the development of advanced compressed air energy storage (A-CAES) technology. The agreement secures 50 MW/400 MWh of the facility's total 500 MW/4,000 MWh capacity for six of CC Power's community choice aggregator members, demonstrating a commitment to long-duration energy storage solutions. This project, slated to come online in 2030, aims to provide eight hours of continuous discharge to the grid, addressing the growing need for reliable and flexible energy resources in California.
The Willow Rock Energy Storage Center is a notable project due to its large scale and the involvement of multiple community choice aggregators. The participation of CC Power members like CleanPowerSF, Peninsula Clean Energy, Redwood Coast Energy Authority, San José Clean Energy, Silicon Valley Clean Energy Authority, and Valley Clean Energy Authority highlights the increasing interest in collaborative energy procurement strategies. Furthermore, the potential involvement of suppliers like Tesla and Chint Power suggests a diverse supply chain supporting the project's development. Hydrostor's experience in A-CAES technology, as evidenced by its previous joint venture, positions it as a key player in this emerging sector.
- Large-scale A-CAES project with 500 MW/4,000 MWh capacity.
- Offtake agreement secures 50 MW/400 MWh for six community choice aggregators.
- Demonstrates commitment to long-duration energy storage.
- Involves Hydrostor, a developer with experience in A-CAES technology.
Timeline
Announced
Feb 13, 2026
Signed
Feb 13, 2026
Closed
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