Update Seattle City Light says (and Silver concurs in comments) that as of about 10 p.m. power has been restored to all customers in Queen Anne.
Earlier: About 1600 customers are without power in Queen Anne, in an area roughly from W. Barrett St. to Denny, and 2nd Ave. N to 17th Ave. W. Seattle City Light says the cause is an underground cable failure.
The power outage began at 7:30 p.m., and City Light says the estimated time to restore power is 11 p.m. to midnight. Earlier, about 80 customers in the Fremont area lost power. (Thanks Silver for the tip!)