Crimson Storage is the world’s largest single-phase storage battery that is currently operating in the California desert and is the second-largest energy storage project of any configuration currently in operation. Construction of the 350 megawatts (MW)/1,400 megawatt-hour (MWh) storage facility began in 2021.

Canadian Solar oversaw the construction and provided the energy storage systems, while Axium Infrastructure and solar batteries and storage systems developer Recurrent Energy will be the long-term owners of Crimson Storage.

Residential buildings are typically served by single-phase electricity, and this project is expected to store and dispatch enough electricity on average to power more than 47,000 homes each year.

Crimson Storage became the first stand-alone energy storage project to be approved by the Biden administration on Bureau of Land Management (BLM) lands in May 2021.