About the Project
The Sierra Estrella Energy Storage project is ideally located on roughly 11 acres of land in Avondale, Arizona, adjacent to the 230kV bus of the Rudd substation, an existing critical exchange on the grid. Sierra Estrella holds up to 250 MW / 1,000 MWh of battery energy capacity, supporting grid reliability and facilitating the integration of low-cost, readily available renewable energy into the local electrical system for Salt River Project. Construction of the Sierra Estella facility started in summer 2023. The project came online in June 2024.
The Sierra Estrella facility supports Salt River Project’s renewable energy and clean energy jobs goals while providing valuable local community benefits. Situated in a disused portion of an operating dairy plant and directly adjacent to the substation, the Sierra Estrella Energy Storage project site is an optimal location for new energy infrastructure.
About Plus Power
Plus Power develops, owns, and operates utility-scale energy storage facilities that enable a more efficient and reliable electrical grid. The Plus Power team, led by seasoned executives from the renewables and energy storage industry, is accelerating the deployment of transmission-connected battery storage throughout the United States.
