The Army announced November 1 that it is using more energy efficient technologies and renewable energy in both military installations and operations to reach a goal of net zero energy use by 2030.As the largest energy consumer in the federal government, the Army operates 165 U.S. installations, and selected in April 17 of them for a pilot program to achieve net zero waste, energy, and water use. The biggest value that Army has found in using energy efficient technologies and renewable energy has been in military operations because of the high cost of delivering liquid fuel to the field to generate power.