en.Wedoany.com Reported - Energy company Energy Dome has signed an agreement with the Salt River Project (SRP), a nonprofit public service organization in Arizona, to add a 19-megawatt, 10-hour CO2-based battery energy storage system to the state's grid.

The project is planned to be co-located with SRP's Coronado Generating Station (CGS) in St. Johns, with both parties signing a 20-year tolling agreement. During the agreement period, Energy Dome will own and operate the facility, while SRP will dispatch the battery output. Once operational, the stored electricity can power 4,275 households in Arizona for 10 hours.

Claudio Spadacini, founder and CEO of Energy Dome, stated that Arizona's continued growth makes it one of the most attractive energy markets in the United States. Against the backdrop of artificial intelligence growth and rising electricity demand reshaping the U.S. energy landscape, CO2 batteries can provide scalable, dispatchable capacity, helping to strengthen U.S. energy dominance.

The project is part of a collaboration between SRP and internet company Google. Google is seeking to accelerate the deployment of non-lithium long-duration energy storage (LDES) technology. SRP selected the project from a 2024 tender, and Google will provide partial funding through a cost-sharing agreement.

The new system uses Energy Dome's CO2 battery technology, with energy storage managed through proprietary software. The project helps Energy Dome increase investment in batteries and renewable energy, supporting its goal of enhancing U.S. grid reliability.

Chico Hunter, SRP's Innovation and Development Manager, stated that as energy demand continues to grow, SRP is evaluating new energy storage technologies to diversify its battery storage portfolio and meet the valley's growing energy needs with affordable, reliable, and sustainable electricity. The project will allow SRP to test the real-world performance of Energy Dome's technology in Arizona's climate.

SRP stated that it plans to "at least double" the number of generation resources in its power system portfolio by 2035. With energy demand continuing to grow across the United States, especially in the Southwest and West Coast, energy storage has become critical. Lucia Tian, Google's Director of Advanced Technology, said the company is committed to catalyzing next-generation energy technologies to enhance grid resilience and introduce important new capacity. This second project and the significant milestone of collaborating with SRP build on a long-term partnership with Energy Dome, providing reliable, affordable, and sustainable energy for Arizona ratepayers.

The new battery project at the Coronado Generating Station is scheduled to be operational in 2029.

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