The Government Accountability Office estimates that seven federal civilian and military agencies have awarded energy savings performance contracts worth a combined $12.1 billion to private companies during the past 20 fiscal years.
GAO said Wednesday it reviewed ESPC usage at the departments of Energy, Veterans Affairs and Justice as well as the General Services Administration, Army, Navy and Air Force from 1995 to 2014.
The organizations have used the agreements to install lighting and power generation systems designed to help save energy at their facilities, GAO noted.
However, an analysis of multiple energy efficiency projects has shown agency representatives provided limited project oversight and assessment.
GAO advised agencies to develop strategies to improve saving reports, training programs, and portfolio evaluations for ESPC initiatives.