Energy & Environment

We are committed to advancing energy initiatives providing expertise in renewable energy development, energy efficiency, and resilience projects. By leveraging advanced technologies and a deep understanding of regulatory frameworks, Amentum helps clients achieve environmental stewardship and energy sustainability, contributing to a safer, cleaner future while supporting mission-critical operations.

Amentum delivers innovative and sustainable solutions for complex environmental challenges and energy needs. The company excels in areas such as environmental remediation, restoration, and compliance, ensuring the safe management of hazardous materials and contaminated sites.

Environmental Firm, Nuclear Waste (Engineering News Record, 2024)

Environmental Firm, Federal Market (Engineering News Record, 2024)

Environmental Firms (Engineering News Record, 2024)

Related Capabilities

Select North America Client List


  • US Department of Energy (DOE)
  • DOE Office of Environmental Management (EM)
  • DOE National Nuclear Security Administration (NNSA)
  • DOE Office of Fossil Energy
  • DOE Office of Nuclear Energy
  • DOE Office of Science
  • DOE Office of Legacy Management

Select International Client List


  • UK Nuclear Decommissioning Authority
  • Sellafield Ltd
  • Électricité de France
  • Eskom
  • Slovenské Elektrárne
  • ČEZ
  • Tokyo Electric Power Company
  • GE Hitachi Nuclear Energy
  • Westinghouse Electric Company
  • Rolls-Royce SMR

Feature Projects


Latest Resources & Insights


  • Amentum Awarded Key Design Support Contract for the Savannah River Site’s Tritium Finishing Facility

    Chantilly, VA., June 11, 2026 – Amentum (NYSE: AMTM), a global leader in advanced engineering and technology solutions, has been awarded a contract by Savannah River Nuclear Solutions, LLC (SRNS) to provide expert design and engineering services for the Tritium Finishing Facility Project at the Savannah River Site. “As a trusted partner to the National Nuclear…

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  • Amentum-Led Joint Venture Secures $406 Million Contract as Owner’s Engineer for UK’s First Small Modular Reactors

    CHANTILLY, VA., April 1, 2026 — Great British Energy – Nuclear (GBE-N) has selected a joint venture between Amentum (NYSE: AMTM) and Cavendish Nuclear as Owner’s Engineer for its flagship small modular reactor (SMR) project in the UK. The contract, which has a maximum value of $406 million (£300 million) and a duration of up…

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  • Amentum-led Joint Venture selected for $112 Million Clean-up at Four European Nuclear Research Sites

    CHANTILLY, VA., March 10, 2026 — A joint venture led by Amentum (NYSE: AMTM) has won a new framework contract as the lead decommissioning and waste management contractor for nuclear research sites in four European countries. Under the $112 million (€95.7 million) contract, awarded by the European Commission Joint Research Centre (JRC), the Amentum-led JV…

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