At Large Director
Boulder Wind Power Inc.
Sandy Butterfield has been an innovator and leader in wind energy his entire career. Prior to co-founding Boulder Wind Power, Butterfield spent over 24 years at the National Renewable Energy Laboratory (NREL), most recently as Chief Engineer at NREL’s National Wind Test Center and leader of the Gearbox Reliability Collaborative. Butterfield was a wind energy entrepreneur prior to NREL. In 1980 he co-founded ESI, a wind turbine manufacturing company. Butterfield is currently Chairman of IEC TC88 Technical Committee which is responsible for international wind turbine standards. Butterfield graduated from the University of Massachusetts with a Masters in Mechanical Engineering.