Dan Leff

Executive Chairman at Ambri

Dan has extensive experience building and leading global technology and software, energy services, and industrial manufacturing businesses.

He has held leadership roles, including serving as executive chairman of ServiceChannel and Viridity Energy; CEO and board member of Hara Software; advisory partner with private equity firm Clayton, Dubilier & Rice; COO of Invensys Energy Management and co-COO of its parent company, Invensys plc. He was also chairman and CEO of Enron Energy Services, where following Enron’s bankruptcy, he led teams that managed the liquidation of Enron’s retail and wholesale businesses. Prior to that, Dan was COO of Enron Energy Services following its acquisition of an energy services company that he co-founded. Dan also served as CEO of a NYC-based energy services company, and prior to that, he was with United Technologies Carrier Air Conditioning in domestic and international assignments.

Dan enjoys contributing his knowledge and experience by serving as an investor, board member, and advisor to a number of businesses and non-profit organizations.