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Duke Energy plans to expand battery storage in the Carolinas, adding 6,550MW by 2035, supported by federal tax credits. Construction of a 115MW/460MWh BESS at Riverbend is set to start in late 2026. Fluence will supply a 300MW/1,200MWh BESS for the Pioneer Clean Energy Centre in Arizona, with operations starting in April 2027. Elevate Renewables is developing the 150MW/600MWh Prospect Power Storage project in Virginia, expected to begin operations in mid-2026, alongside plans for other storage projects in New York and Connecticut.