Geothermal developers and industry advocates assembled in Reno this week for the Third Annual National Geothermal Summit focused much of their discussion on the potential for cost reduction through the use of new technology, and on revealing geothermal energy as more competitive with sun and wind renewables. “If we can reduce costs and increase revenues the market will react immediately,” surmised Aaron Mandell, the chief commercial officer for AltaRock Energy, a geothermal technology company based in Seattle.