Who are the top contractors for Department of Energy?

A direct answer for Department of Energy contractor spending, with supporting agency and ranking links.

Direct answer

NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC is the top listed contractor for Department of Energy, with $42,111,665,692 in ingested obligations.

Answer Facts

Agency obligations$456,803,595,360

Award records367

Top contractorNATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC

Top NAICS561210 - FACILITIES SUPPORT SERVICES

Which market category matters most for Department of Energy?

561210 - FACILITIES SUPPORT SERVICES is the largest visible NAICS category for Department of Energy at $210,554,859,167.

Source: USAspending.gov. Last updated from ingested federal spending data: May 7, 2026.