Monsoon storms knocked out power to more than 25,000 Valley SRP and APS customers Thursday night.
As of 5 a.m. on Friday, just over 2,500 SRP customers were still waiting to have power restored and fewer than 100 APS customers were still without power.
Crews worked throughout the night to restore power in all areas.
Storms also delayed flights for about an hour at Phoenix Sky Harbor Airport.
Officials were advising that passengers check the status of their flights or the flights of anyone they're picking up at the airport.