Seattle City Light crews restored power to all 4,750 customers affected by a power outage in Burien within one hour of the outage’s start today.

The outage began about 1:35 p.m. and included Burien City Hall and the Burien Public Works offices. Crews immediately began patrolling the power lines to find the cause of the outage and restored power in stages. Power was back on for 85 percent of the affected customers within 30 minutes.

A tree branch that came into contact with power lines and a transformer near 152nd Street SW and Ambaum Way was responsible for the outage.

The general boundaries of the outage were S 96th St. on the north, 172nd St. on the south, 24th Ave. S. on the east, and 33rd Ave. SW on the west. Seattle City Light is the ninth largest public electric utility in the United States. It has the lowest cost customer rates of any urban utility, providing reliable, renewable and environmentally responsible power to nearly 1 million Seattle area residents. City Light has been greenhouse gas neutral since 2005, the first electric utility in the nation to achieve that distinction.