Mark Lewis is a Managing Director of the Lime Rock New Energy team with responsibility for deal sourcing, execution, and overall fund management. He joined the team in 2018 and brings to this role a career in new energy portfolio company management and operations, new energy investing, and strategic energy technology acquisitions. Most recently, he served as the President and Chief Business Officer of TAE Technologies, Inc., the world’s largest and most advanced fusion energy technology development company. Prior to joining TAE Mark served as CEO of ONEnergy, Inc., an energy services company involved in energy retailing, commercial and industrial energy efficiency and distributed solar projects. Before this, Mark was a Managing Director and Co-Chair of the Investment Committee at MissionPoint Capital Partners, an environmentally-driven venture capital firm focused on financing the transition to a lower carbon economy. He previously had served for six years with General Electric in Europe and the US, including three years as General Manager, Global Business Development at GE Energy where he led a team of thirty-five professionals. Mark was involved in over $15 billion of transactions during his career at GE. Mark started his career in energy investment banking at Credit Suisse in New York and London. Mark previously served on the board of directors of Trilliant Networks, UpWind Solutions, ONEnergy, and OZZ Clean Energy. He is a graduate of the University of Western Ontario (B.A.) and the Kellogg School of Business at Northwestern University (M.B.A.).