David Ribeiro serves as a member of the Board of Directors for Emerald Cities Collaborative since December 2021 and has been with The American Council for an Energy-Efficient Economy (ACEEE) as the Director of Local Policy since May 2013, managing the local policy program's strategic direction and research agenda. Previously, David has held various roles at ACEEE including Senior Research Manager and Analyst, as well as positions at ClearlyEnergy and the New York City Department of Environmental Protection, where responsibilities included managing special projects and conducting research on energy markets. Initial experience included an internship with the U.S. House of Representatives and a role at AllianceBernstein in portfolio administration. David holds a Master of Science in Energy Policy and Climate from The Johns Hopkins University and a BA in History and Peace & Conflict Studies from the College of the Holy Cross.