Salt River Project and Flatland Storage plan 200-MW BESS in
The Flatland Energy Storage Project will be a 200-MW/800-MWh battery energy storage system located near Coolidge, Arizona. The project will use Tesla lithium-ion battery energy storage systems. Scheduled to be online in 2025, the facility will have enough capacity to power up to 45,000 homes for four hours during peak electricity demand periods.