Arizona’s Pinnacle West Capital Corp. is kicking off the most ambitious deployment of energy storage ever announced by a U.S. utility.
Pinnacle West’s Arizona Public Service plans to add 850 megawatts of battery storage and at least 100 megawatts of new solar power by 2025, according to a Feb. 21 statement. The company did not say how much the initiative would cost.
The move comes as Arizona regulators have placed a temporary moratorium on building natural gas-fired plants and as falling energy-storage prices have compelled utilities to use batteries to extend output from solar farms after sundown.
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