Power was knocked out to 1,720 PG&amp;E customers in Rincon Valley on Sunday after a tree crashed to the ground.
At least 260 customers would remain without power through at least this morning until PG&amp;E technicians repaired the lines, PG&amp;E spokesman J.D. Guidi said.
The tree fell at about 6 p.m. near 5190 Montecito Avenue, Guidi said.
Officials closed the avenue near Chanate Road for several hours as crews removed the tree and utility workers began rerouting customers to other circuits.
The utility company had restored power to all but 260 residents by 8:15 p.m., Guidi said.
Residents in the area reported several power failures had struck the Rincon Valley area over the weekend.
Guidi said he had no information about other blackouts.