William Mao Speaker at Energy Storage Summit USA 2024

William Mao

Chief Commercial Officer Eos Energy Enterprises

With 30+ years of electrical industry experience, William (“Will”) K. Mao was appointed Chief Commercial Officer of Eos in July 2022. Prior to joining Eos, Will served as VP of Sales & Marketing with Hitachi Energy and Global VP with Hitachi ABB Power Grids. From 2008 to 2013, Will was VP and head of ABB US Oil, Gas & Petrochemicals business unit. Prior to ABB, he had senior management, overseas joint venture director roles as division manager and international business unit manager with Powell Industries (Nasdaq: POWL). Will started his professional career with Westinghouse Electric’s well-known graduate engineering / sales training program.  He is deeply involved in the local community and serves as executive board member and a formal president of the Houston Tennis Association, one of the largest 501(c)3 community tennis associations (CTA) overseeing leagues, tournaments, and Houston’s underserved schools after hour programs through USTA NJTL Foundation.

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