Kiewit and Hydrostor to explore 500MW Willow Rock Energy Storage Center

Dollar in Green Business

Hydrostor, an energy storage solution provider, and Kiewit Engineering Group, have entered an agreement to advance Front-End Engineering and Design studies for the 500MW Willow Rock Energy Storage Center in California.

This milestone demonstrates steady progress in the development of Hydrostor’s Advanced Compressed Air Energy Storage (A-CAES) technology in North America.

Willow Rock will be capable of storing enough energy to provide reliable power for up to 400,000 homes over 8 hours, turning California’s growing solar and wind resources into on-demand peaking capacity, enabling the closure of emitting fossil fuel resources while maximizing transmission system utilization.

“Our global teams are paving the way towards achieving aggressive net-zero goals. Willow Rock will be capable of eliminating the equivalent of roughly 120,000 cars off the road every year over its 50+ year project life,” said Curtis VanWalleghem, Hydrostor’s Chief Executive Officer.