John J. MacWilliams
John J. MacWilliams is a Fellow at the Center on Global Energy Policy at Columbia University. Prior to joining CGEP, MacWilliams served as Associate Deputy Secretary of the U.S. Department of Energy after being appointed in August 2015. He also served as DOE's Chief Risk Officer and, before that, as a Senior Advisor to the Secretary. Prior to DOE, MacWilliams was a partner of Tremont Energy Partners, LLC, a private investment firm based in Cambridge, Massachusetts. Prior to Tremont, he was Vice Chairman, Investment Banking, at JP Morgan Chase, a Partner of JP Morgan Partners, and a founding partner of The Beacon Group, LLC, a private investment firm located in New York and acquired by JPMorgan Chase in 2000. He was also Partner and Co-Head of the Beacon Group Energy Investment Funds. Prior to the formation of The Beacon Group, MacWilliams was with Goldman Sachs & Co. and an attorney at Davis Polk & Wardwell. MacWilliams holds a BA from Stanford, an MS from MIT, and a JD from Harvard Law School.