Update, 9:15 p.m.
Power has been restored to all customers, according to PG&E.
About 82 customers were without power in San Luis Obispo shortly after 6 p.m. Monday.
According to PG&E, the outage knocked out power to customers in the Madonna Road and Los Osos Valley Road area.
PG&E has assigned a crew to assess the cause. Power is expected to be restored about 9:15 p.m.