PHOENIX (AZFamily) — For the second time in less than two weeks, Arizona Public Service customers used more electricity than ever before.
The utility said Tuesday that customers set a new all-time peak energy record on Sunday by using 9,164 megawatts between 6 p.m. and 7 p.m.
The old record of 9,053 megawatts was set on July 24.
One megawatt is enough to power about 160 homes, APS said.
Phoenix set a record high temperature on Sunday at 115 degrees, beating last year’s record by one degree. Yuma saw the high temperature reach 114 degrees, which is seven degrees above normal.
Afternoon high temperatures were in the 110-120° range across the lower deserts & in the 95-110° range across the higher terrain areas. Phoenix set a new record high for today’s date (breaking last year’s record of 114°) & El Centro tied their record high for today. #azwx #cawx pic.twitter.com/udOeqIfuk2
— NWS Phoenix (@NWSPhoenix) August 3, 2026
An APS spokesperson said workers use a real-time operations desk to coordinate and manage supply moment to moment. The utility also buys additional generation when needed and sells excess when available.
APS uses a mix of resources, including nuclear power from the Palo Verde Generating Station.
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