US Army Corps of Engineers
U.S. Army Corps of Engineers Headquarters Website

Regional Environmental and Energy Offices (REEOs)


Since 1995, the Army Regional Environmental and Energy Offices (REEOs) have represented the interests of the Army and the Department of Defense (DOD) with state legislatures and regulatory agencies. The REEOs serve as key links to the states, engaging in environmental and energy initiatives that may affect military training, testing and readiness. 

There are four Army Regional Environmental and Energy Offices, which represent the 10 U.S. EPA Regions:

  • REEO - Northern: Represents the 22 states and territories within EPA Regions 1, 2, 3, and 5.
  • REEO - Southern: Represents the 8 southeastern states within EPA Region 4.
  • REEO - Central: Represents the 9 states within EPA Regions 6 and 7.
  • REEO - Western: Represents the 14 western states within Regions 8, 9 and 10.

Each office is led by a REEO Director, who serves as the DOD Regional Environmental Coordinator (REC) for the region. The program was originally managed by the Assistant Secretary of the Army (Installations, Energy & Environment) and the Deputy Assistant Secretary of the Army (Environment, Safety & Occupational Health, but in 2014, responsibility was transferred to the U.S. Army Corps of Engineers for program oversight and execution.


What We Do

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The U.S. military is responsible for protecting the American people and U.S. interests around the world. To maintain the country’s premier military edge, our service men and women must be given the best and most realistic training to meet the challenges of combat. Training restrictions have a detrimental impact on the military’s ability to “train as we fight” which can lead to the inadequate preparation of our military forces.

Working collaboratively with  state and local governments and regulatory agencies, the military can protect military training capabilities while conserving important natural resources. The REEOs provide a single voice in response to state legislation or regulations of concerns to the military and in support of the development of regional, state, and local legislation, regulations, policies, and other issues.

The REEOs continuously monitor state environmental and energy legislation to identify potential impacts on military missions. They have experience with state legislative and regulatory  processes and can effectively engage with stakeholders to protect military missions and installation operations and minimize training impacts.  
REEOs establish relationships with public utility commissions, state energy offices, and non-governmental organizations to support military energy initiatives at the state level and encourage energy project development to meet Department of Defense and Army Energy policies.
The REEOs conduct outreach and partner with key stakeholders including Department of Defense service components, state and federal partners, regulatory agencies, non-governmental organizations and the public. The intent of this outreach and partnering is to establish effective communication and relationships with stakeholders to better support military environmental and energy programs.

Additional Information

Points of Contact

REEO - Northern
(410) 278-6991

REEO - Southern
(404) 460-3131

REEO - Central
(816) 389-3448

REEO - Western
(303) 844-0956