CHANTILLY, VA, July 21, 2026 – Amentum has been selected by the U.S. Department of Energy‘s National Nuclear Security Administration (NNSA) to enter negotiations for a phased lease to develop a large-scale artificial intelligence and energy infrastructure project at the Savannah River Site (SRS) in South Carolina. Once finalized, the public-private project would establish a 1-gigawatt AI data center supported by about 2 gigawatts of on-site power generation. Natural gas would supply that power initially, with a planned transition to advanced nuclear energy.
“Artificial intelligence, energy resilience, and national security are becoming increasingly interconnected, creating new opportunities to strengthen America’s strategic advantage,” said John Heller, chief executive officer of Amentum. “Amentum is uniquely positioned at that intersection, combining deep engineering expertise, trusted mission execution, and decades of partnership with the U.S. government. This agreement gives us the opportunity to partner with the NNSA to deliver infrastructure that will help power the technologies shaping our nation’s future.”
“For generations, Amentum has helped solve some of the nation’s most complex engineering and nuclear challenges, including at the Savannah River Site,” said Mark Whitney, president of Amentum’s energy & environment business. “This opportunity builds on that legacy by bringing together our expertise in nuclear operations, infrastructure development, and program delivery to help our customer safely and securely accelerate the next generation of AI and energy infrastructure.”
The project will expand domestic AI computing capacity and power generation while testing a public-private partnership model for infrastructure development.
Source: Amentum
About Amentum
Amentum provides engineering, technology and program services to government and commercial customers. Founded in 2020, the company is headquartered in Chantilly, VA. Its services include systems engineering, cybersecurity, intelligence analysis, software modernization and space operations. Amentum also handles testing, training, logistics, maintenance and program management. Environmental services cover nuclear operations, waste management, site cleanup and infrastructure support. The company works across defense, intelligence, space, energy, telecommunications and civilian government programs. Customers include U.S. agencies, allied governments, contractors and commercial organizations. Amentum also serves aerospace, automotive and other technology-related industries. Its employees support research, system development, equipment maintenance, supply chains and facility operations. The company operates through its Digital Solutions and Global Engineering Solutions business segments. Amentum employs about 50,000 people across more than 70 countries.