High Quality Content by WIKIPEDIA articles! Trojan Nuclear Power Plant was a pressurized water reactor nuclear power plant located southeast of Rainier, Oregon, United States, and the only commercial nuclear power plant to be built in Oregon. After sixteen years of service it was closed by its operator, Portland General Electric (PGE), almost twenty years before the end of its design lifetime. Decommissioning and demolition of the plant began in 1993 and was completed in 2006.