The Defense Department will likely miss a federal mandate to cut 30 percent of energy use at its facilities by 2015, according to Office of Management and Budget estimates.
Federal Times reports OMB found the Pentagon is one of several departments that are falling short of energy efficiency and sustainability initiatives.
Andy Medici writes the Department of Homeland Security reduced facility energy use by 14 percent in 2011 and the Department of Health and Human Services scored a 19 percent cut in energy use for 2011.
According to Federal Times, new buildings must use 30 percent less energy than most buildings of the same size and renovated buildings must use 20 percent less energy.
OMB cited budget constraints as the main reason federal entities were falling short of the mandates, Medici writes.