# United States Department of Energy **Aliases:** DOE **Entity class:** Federal executive department ## Definition The **United States Department of Energy** is responsible for federal energy policy, nuclear-security functions, national laboratories, and energy research and infrastructure programs. ## Relationships - **directed by:** [[wiki/Executive Order 14318|Executive Order 14318]] to identify suitable federal sites and support qualifying data-center infrastructure. - **AI infrastructure role:** energy supply, permitting coordination, grid capacity, and federal land where applicable. - **national-security context:** Department of Defense and nuclear-security missions. ## Sources / Provenance - [Department of Energy — Mission](https://www.energy.gov/mission)