en.Wedoany.com Reported - Italian long-duration energy storage developer Energy Dome has partnered with Arizona utility Salt River Project to develop a 19 MW carbon dioxide battery storage project at the Coronado Generating Station site in eastern Arizona. The U.S. long-duration energy storage project, with a storage duration of 10 hours, is scheduled to begin operation in 2029.

The project will utilize Energy Dome's CO2 battery technology, storing energy by compressing carbon dioxide when electricity is abundant and releasing power through turbine generation when demand rises. Under a 20-year capacity offtake agreement, Energy Dome will own and operate the facility, while Salt River Project will dispatch the project's output.

The project is expected to provide continuous power for approximately 4,275 homes for 10 hours. This U.S. long-duration energy storage project is also part of a collaboration between Salt River Project and Google to advance the deployment of non-lithium-ion long-duration energy storage technologies, with Google providing financial support through a cost-sharing agreement. As the 19 MW CO2 battery project enters development arrangements, Arizona will add engineering samples for long-duration energy storage, grid regulation, and validation of new energy storage technologies.

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