Jennifer Macedonia serves as the Director of the Montgomery County Department of Environmental Protection (DEP), where she leads efforts to implement the County's Climate Action Plan, promote Zero Waste goals and sustainability initiatives, and enhance environmental resilience throughout the County.

Jennifer is a mechanical engineer with over 30 years of experience in environmental policy, climate strategy, and leadership in the clean energy sector. Prior to her appointment at DEP, she held senior roles at the U.S. Environmental Protection Agency (EPA), most recently as Deputy Assistant Administrator for Implementation in the Office of Air and Radiation. There, she led the rollout of over $10 billion in Inflation Reduction Act investments and helped design 15 new federal programs to reduce emissions and improve air quality. Jennifer also served as the EPA’s Deputy Associate Administrator for Policy where she led agency initiatives to boost climate and environmental justice protections for clean energy supply chains and major infrastructure projects.

Jennifer holds a B.S. in Mechanical Engineering from Villanova University and serves on the Boards of DC Water and Project Green Schools.