U.S. Army installations consume substantial amounts of energy, and the Army is seeking ways to meet federal energy requirements, conserve resources, and save costs. RAND Arroyo Center conducted a study for the Army⁰́₉s Office of the Assistant Chief of Staff for Installation Management to assess how the Army could improve installation collaboration with utility companies to reduce energy consumption and help meet other Army energy goals. This report provides the final study results, including findings about how installations collaborate with utilities, the barriers to such collaboration, and the study team⁰́₉s recommendations about how best to overcome the barriers to improve installation collaboration with utility companies for mutual benefit.