Power was restored to thousands of people in southwest Denver and Lakewood after about two hours in the dark, Xcel Energy said Sunday morning.
Denver Police responded to a report of an explosion near W. Mississippi Ave. and S. Lowell Blvd. at about 5:40 a.m.
7NEWS photojournalist Eric Goody found Xcel Energy crews working on a transformer near W. Kentucky Ave. and S. Irving St. When Goody first arrived, sparks were shooting from the transformer.
According to Xcel's website, about 12,000 people lost power in the area roughly from W. Colfax Ave. and W. Mississippi Ave. to the Ruby Hill neighborhood, near S. Zuni St. and W. Florida Ave.
Temperatures in the area Sunday morning were in the single digits, with a "feels like" temperature of -7 degrees.
Power was restored shortly before 8 a.m., according to Xcel Energy.