(Boardman, OR) -- The 656-foot stack and boiler at Portland General Electric's decommissioned coal power plant in Boardman is set to come down on September 15th. The plant was shutdown in 2020 as PGE transitioned to more renewable power. Explosives at the base of the stack will cause a controlled fall. PGE replaced power from the plant with the Wheatridge wind, solar and battery storage plant that's located less than 30 miles away.