Exhibitor registration is now open for the 2013 GEA Geothermal Energy Expo, to be held September 29 – October 2 at the MGM Grand Hotel & Casino in Las Vegas. Hosted by the Geothermal Energy Association (GEA), the Expo is the world's largest gathering of the geothermal industry, and the annually sold-out show provides a unique opportunity for exhibitors to showcase their projects, equipment, services and state of the art technology to the geothermal community.