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Sustainability and Environmental Programs

Sustainability and Environmental Programs (SEP) provides policy, guidance, training, technical support, and Department oversight through coordination with DHS Components and consultation with the public. As a result, energy and resilience, sustainability and environmental compliance, and environmental planning and historic preservation programs are appropriately integrated throughout activities, operations, and programs of DHS and its stakeholders.


SEP functions as part of the Office of the Chief Readiness Support Officer, and helps in supporting Component operational readiness and resilience by leading, governing, integrating, managing and capital planning for sustainability and environmental programs. SEP helps the people that safeguard the American people, our homeland, and our values with honor and integrity, and the assets and facilities they depend on.


SEP supports and enhances DHS mission readiness and resilience by ensuring that energy and environmental programs, as established by laws, public policies and best practices are appropriately integrated throughout activities, operations and programs of DHS. Through its scopes of responsibility, the office helps the Components that secure the nation from the many threats we face from border security, and cybersecurity, to natural disasters and chemical, biological, radiological, nuclear or high explosive threats.


SEP plays an important role in securing the nation from the many threats we face. Under the leadership of an Executive Director, the work of SEP is an essential aspect of field efficiency efforts, and is performed through four main focus areas with overlapping scopes of responsibility:

  • Energy and Resilience
  • Sustainability and Environmental Compliance
  • Environmental Planning and Historic Preservation Programs

DHS Environmental Responsibility

DHS Compliance with the National Environmental Policy Act

DHS Sustainability

Last Published Date: February 3, 2021

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