On Sunday morning, power was successfully restored to the majority of the 130,000 San Francisco homes and businesses affected by Saturday’s widespread outage, which had significantly disrupted city life.

According to Pacific Gas and Electric Co.’s outage map, over 20,000 customers were still without electricity as of 5 a.m. PST, with crews diligently working to ensure a full restoration of services.

The power outage struck shortly after 1 p.m. on Saturday, primarily affecting the northern part of the city. The affected area expanded, ultimately impacting about one-third of the utility’s customers in San Francisco.

Local media and social media users reported widespread closures of restaurants and shops, along with darkened street lights and Christmas decorations, on what was one of the busiest shopping days of the year.

The San Francisco Department of Emergency Management announced on social media platform X that the city was experiencing “significant transit disruptions.” Residents were advised to avoid unnecessary travel and to treat nonfunctioning traffic signals as four-way stops. Waymo, the company behind autonomous ride-hailing services, temporarily halted its operations. At least one social media video showed a Waymo vehicle immobilized in the middle of an intersection.

Some of the blackouts were caused by a fire that broke out inside a PG&E substation at 8th and Mission streets, fire officials posted on X at about 3:15 p.m. The full cause remained under investigation.

At about 4 p.m.., PG&E posted on X that it had stabilized the grid and no further outages were expected.