William R. Sproull, Mr. Sproull is responsible for business development, sales and go-to-market strategies for ESS. Having held executive roles and founded startups in both high tech and emerging clean energy spaces for the last 20 years, Bill’s passion centers on bringing new technologies to markets where gaps exist. Prior to joining ESS, he was Managing Director for Strategic Energy Advisors, a project development firm focused on solar, storage and energy efficient lighting for commercial facilities. Mr. Sproull was a founder and business development executive at ClearEdge Power, building it to become a leader in the stationary fuel cell space. Prior to entering the clean energy industry in 2003, Mr. Sproull was an executive at Planar Systems, Inc., in charge of the $65M Industrial Business Unit for custom display solutions, and started his career at Honeywell Inc., serving various roles in sales, marketing, finance and business unit management in its Aerospace Group. Mr. Sproull is a graduate from the University of Colorado, with a BS degree in Finance.