Under Secretary of Energy for Infrastructure

The Under Secretary of Energy oversees the department's energy and environment programs. The Under Secretary plays an instrumental role in the development of energy related research and development necessary to meet the United States' growing energy need and work to advance the nations energy and electricity security.

The Under Secretary of Energy is appointed by the President with the advice and consent of the Senate. The current under secretary is Preston Wells Griffith III, who was sworn in on July 10, 2025.^{[citation needed]}