Utility companies seeking to reduce CO2 emissions are increasingly relying on battery energy storage systems to meet peak-power demand as they retire their gas-fired plants.
Questions are still awaiting answers as Arizona Public Service Co. investigates the cause of an explosion April 19 in a 2-MW/2-MWh grid-connected energy-storage battery facility in Surprise, Ariz.
As state is set to award its first 1,100-MW offshore wind farm contract, activists want it to restrict approvals of new natural-gas and other fossil fuel projects.
