ESS has signed a framework supply agreement with SB Energy to deploy 2GWh of long-duration battery storage systems through 2026.
The first ESS system has already been delivered to an SB Energy location in Davis, California and will be commissioned this month.
The latter company plans to install additional flow battery systems to complement its expanding portfolio of solar power projects in California and Texas, two of the fastest-growing markets for long-duration storage in the US.
The battery systems provided by ESS is said to help customers enhance grid resiliency while eliminating the risk of the batteries catching fire, particularly in wildfire-prone areas such as California, as they are iron, salt and water-based.
Rich Hossfeld, Co-Chief Executive Officer at SB Energy, a wholly-owned subsidiary of SoftBank Group and ESS Board Member said: “ESS’s unique ability to manufacture and ship batteries using iron, salt and water is a game-changer, enabling SB Energy to offer our customers safe, sustainable and low cost energy storage today.
“Long-duration storage is absolutely critical to providing flexible, affordable renewable energy at scale and aligns perfectly with the Biden administration’s ambitious clean energy initiatives. SB Energy is excited to continue its partnership with ESS and deploy the company’s domestically manufactured batteries into the vast and rapidly growing market for energy storage.”