Before founding MAC Energy Advisors in 2010, McKibben served as managing director and head of environmental banking strategy for Citigroup Global Markets. She also served on the National Security Council at the White House as director of European economic affairs and European union relations, as well as in various senior advisory roles within the U.S. Department of Commerce. Prior to her work in the public sector, she practiced law at Akin, Gump, Strauss, Hauer & Feld LLP, representing and advising clients on commercial and complex litigation matters, as well as corporate and multinational energy clients on global strategic investments.

She currently serves as a trustee at the New York Power Authority and as a director of Ecolab Inc. and USAA. She is also a member of the Council on Foreign Relations, a nonpartisan organization specializing in U.S. foreign policy and international affairs.

McKibben received a Bachelor of Arts degree from West Virginia State University and a Juris Doctor from Harvard Law School.