Nearly 4,000 customers were without power in the foothills area of Madera and Mariposa counties on Monday.
A preliminary determination for the outage was caused by an equipment issue, PG&E reported.
The estimated restoration time was 2 a.m. Tuesday, according to the utility.
At the peak of the outage, PG&E reported that 3,934 customers were without power. That number was down to 1,358, PG&E spokesperson J.D. Guidi said around 7 p.m. Monday.
The outage started around 4:05 p.m. spreading across Oakhurst, Wawana, Yosemite National Park, Ahwahnee and Bass Lake.
Around 9 p.m., PG&E reported 947 customers were still affected in the areas of Sugar Pine, Fish Camp and Wawona.
The outage initially impacted 2,400 customers in Oakhurst. That number was down to 685, Guidi said.
Guidi said a broken pole was found on Highway 41 in Oakhurst.
Crews and personnel are on site.