ROCKVILLE, MD-RETECH announces third term member of the United States House of Representatives, Congressman Paul Tonko to speak at the Opening General Session at 9:00 a.m. EST on Tuesday, September 10th. The RETECH Conference and Exhibition, which will be held September 9-11, 2013 at the Marriott Wardman Park in Washington, D.C., has been the leading conference focusing on today's most pressing issues and opportunities facing every discipline of the renewable energy industry.