Donald Gilligan


Donald Gilligan is the President of the National Association of Energy Service Companies (NAESCO), a trade association of 110 companies that deliver about $7 billion of energy efficiency and renewable projects annually in the US ( He coordinates NAESCO’s state and federal advocacy activities, advocating for energy efficiency, renewable energy, and sustainability policies and programs in legislative, regulatory and policy forums. He has worked in the energy efficiency industry for 45 years, as a consultant, entrepreneur, and state government official. He also serves as the Board Treasurer of the Emerald Cities Collaborative ( and the Board Chair of PACENation (, and is a graduate of Harvard University