William K. Mao

Chief Commercial Officer

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.

Will is passionate about the digital and energy transition. Will has led product launches in digital power transformers and green substation initiatives.  He holds an MBA from the University of St. Thomas and Bachelor of Science in Electrical Engineering from Texas A&M University. Will was born in Taiwan and immigrated to the US with his family in 1976.  A long-time Texan, he and his wife have two children.

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