The Pacific Gas and Electric company late Saturday announced that it had initiated rotating outages impacting an estimated 250,000 customers following an order from California's grid operator.
The move comes amid a massive heatwave that has stricken California and caused outages in multiple counties.
The company urged the customers to "conserve energy", echoing their earlier heatwave guidelines that also include recommendation to keep windows covered and refrain from using electrical appliances.
A Stage 2 emergency has been declared by California's grid operator amid a heatwave in both Northern and Southern California.