A power outage in San Luis Obispo on Friday afternoon briefly left hundreds of people without electricity.

The outage affecting 570 Pacific Gas and Electric Co. customers happened around 2:15 p.m. Power was restored to most customers around 2:40 p.m.

About 15 customers are still without power on Granada Drive, PG&E said. A power line was down in the area, but PG&E is still investigating the cause of the outage.