Rebecca Isacowitz

Ms. Rebecca Isacowitz is the Deputy Assistant Secretary of Defense for Energy Resilience & Optimization (DASD(ERO)) within the Office of the Assistant Secretary of Defense for Energy, Installations and Environment (ASD(EI&E)). A member of the Senior Executive Service, Ms. Isacowitz comes with over a decade of private sector, nonprofit, and government experience; in this position, she supports a team of talented professionals providing innovation, direction, and governance for programs and activities across the operational energy, installation resilience and mission reliability spaces.

She previously served as Chief of Staff for DOE's Office of Energy Efficiency and Renewable Energy (EERE) working to accelerate the research, development, demonstration, and deployment of energy technologies and solutions. As Deputy Secretary for Energy & Environment with the Executive Chamber for the State of New York, Rebecca supported the tactical development and operationalization of the State’s 14 energy and environmental agencies, and advanced Corporate Strategy initiates with the New York Power Authority in a directorship role. Ms. Isacowitz also served in various government roles for the City of New York, most recently as Deputy Assistant Commissioner for the Department of Citywide Administrative Services’ Division of Energy Management. In that role she created and executed crosscutting projects across 80+ city agency partners.

Rebecca holds a Bachelor of Arts in International Relations and Spanish from Lehigh University, with a minor in Environmental Policy.