Management Team

Jamie Wimberly


Jamie Wimberly has served as CEO of DEFG LLC since it was founded in 2003.

With more than twenty years of experience in energy, Jamie has interacted with leading technology innovators, executive teams at major investor-owned utilities and energy retailers, thought leaders and regulators. His expertise includes general management and operational consulting, customer engagement and strategy, program and offering design, marketing and communications, and customer service. He firmly believes that customers are the future of energy. He and the DEFG team serve as catalysts for change, helping clients better connect with customers. Jamie leads DEFG’s Utility Customer Research Consortium and Prepay Energy Working Group.

In addition to DEFG, Jamie currently serves as the Chairman of the Board of Groundswell International, a non-profit focused on sustainable farming and rural development in nine countries spanning the globe. He also serves on the Board of Woolly Mammoth Theatre Company in Washington, DC, and he is a guest lecturer at New York University.

Prior to founding DEFG, Jamie co-founded and served as President of the Center for the Advancement of Energy Markets (CAEM), a non-profit think tank focused on the energy sector. He served as the Vice President of the Consumer Energy Council of America (CECA), the oldest public interest organization in the nation focusing on energy, telecommunications and other network industries providing essential services to consumers.

Jamie studied at Johns Hopkins School of Advanced International Studies (SAIS).

Jamie is a published poet, exhibited painter and remains active in the arts.