Mary Beth Mandanas

Mary Beth Mandanas is the Chief Executive Officer of Onyx Renewable Partners, a national provider of clean energy and decarbonization solutions to commercial and industrial businesses. Previously, she served as Chief Investment Officer for Sol Systems and prior to that, as Chief Strategy Officer for CleanChoice Energy. With over twenty years in corporate and investment banking principally with Credit Suisse First Boston and Citigroup before transitioning to 100% renewable energy companies, she worked with power and utility clients raising capital and providing financial and strategic advisory services. She currently serves as Independent Director and Chair of the Nominating and Governance Committee for Energy Vault, and previously served as an Independent Director and Audit Chair for Tortoiseecofin Acquisition Corp. III.  She received an M.B.A. in Finance from Vanderbilt University and a B.S. in Business Administration, magna cum laude, from University of South Carolina.