The King County Medical Examiner's office identified the man as Collin Reed Schreiber.
Spokesman James Apa says Schreiber died of "thermal burns and blunt force injury to the torso." The death was ruled accidental.
His age wasn't immediately available.
Schreiber died early Friday after climbing an electricity tower in the Fremont neighborhood. Police say witnesses saw a flash of crackling sparks and a man falling from 120,000-volt lines.
Police have said they don't know why Schreiber decided to climb the tower.