Energy usage of the United States military The United States Department of Defense is one of the largest single consumers of energy in the world , responsible for 93 % of all US government fuel consumption in 2007 ( Air Force : 52 % ; Navy : 33 % ; Army : 7 % . Other DoD : 1 % ) . In FY 2006 , the DoD used almost 30 , 000 gigawatt hours ( GWH ) of electricity , at a cost of almost $ 2 . 2 billion . The DoD ' s electricity use would supply enough electricity to power more than 2 . 6 million average American homes . In electricity consumption , if it were a country , the DoD would rank 58th in the world , using slightly less than Denmark and slightly more than Syria ( CIA World Factbook , 2006 ) . The Department of Defense uses of fuel annually , an average of of fuel per day . A large Army division may use about per day . According to the 2005 " CIA World Factbook " , if it were a country , the DoD would rank 34th in the world in average daily oil use , coming in just behind Iraq and just ahead of Sweden . Air Force . The Air Force is the largest user of fuel energy in the federal government . The Air Force uses 10 % of the nation ' s aviation fuel . ( JP - 8 accounts for nearly 90 % of its fuels . ) This fuel usage breaks down as such : 82 % jet fuel , 16 % facility management and 2 % ground vehicle / equipment . To meet renewable energy goals , the Air Force plans to certify its entire fleet on coal - to - liquid synthetic fuel blends by 2011 . By 2016 , it plans to fuel half of its domestic transportation by US - produced synthetic blends , including blends of biofuels and jetfuels , known as Hydrotreated Renewable Jet ( HRJ ) . The Air Force is currently the leading purchaser of renewable energy within the Federal government and has been a long time pioneer of renewable energy development and leadership . The Air Force is recognized by the Environmental Protection Agency as a Green Power Partner , one of the nation ’ s top purchasers of green power . The Air Force Energy Plan , published in May 2010 , includes more information about the Air Force ’ s goals , including reducing demand , increasing supply , and changing the culture to include energy awareness . Office of the Assistant Secretary of Operational Energy Plans and Programs . In 2010 , DoD established the Office of the Assistant Secretary of Operational Energy Plans and Programs to coordinate energy issues . In July 2010 , DoD also signed a Memorandum of Understanding with the U . S . Department of Energy to facilitate cooperation and accelerate research , development , and deployment of energy efficiency and renewable energy technologies . DoD ' s Energy Conservation Investment Program ( ECIP ) improves the energy and water efficiency of existing Military Services ' facilities . The program ' s projects help the Military Services save on energy usage and cost . The American Recovery and Reinvestment Act of 2009 provided $ 120 million for the ECIP . The American Recovery and Reinvestment Act of 2009 has also given money for the Army , Navy , Marine Corps , Air Force , Army Reserve , Navy Reserve , Marine Corps Reserve , Air Force Reserve , Army National Guard and Air National Guard facilities to invest in energy efficiency . Recent developments . The US Army has recently prioritized renewable energy strategies in Iraq . Strategies include the Tactical Garbage to Energy Refinery Program , which converts of waste to of JP - 8 fuel , a photovoltaic flexible , portable mat , insulating foam technology , hybrid - electric Manned Ground Vehicle s ( MGV ) , and highly efficient portable cells . The American Recovery and Reinvestment Act gave more than $ 150 million to develop these technologies . Stateside , the Army created the Net Zero program with a goal to have 30 installations achieve net - zero energy by 2030 , including some that will also be net - zero in waste and water . In 2011 , they opened the Base Camp Systems Integration Laboratory , which compares an energy efficient base camp with a traditional one and trains soldiers to use energy efficient technologies . The Army Energy Security Implementation Strategy , published in 2009 , gives details about the Army ’ s energy goals . The Department of the Navy established Task Force Energy to focus on meeting energy goals , which include reducing non - tactical petroleum use in the commercial fleet by 50 percent by 2015 , producing at least 50 percent of shore based energy from alternative sources by 2050 , acquiring 50 percent of total energy from alternative sources by 2020 , and having 50 percent of Navy and Marine Corps installations be net - zero by 2020 . The Navy hopes to demonstrate a Green Strike Group ( fueled by biofuels and nuclear power ) by 2012 and sail the Great Green Fleet by 2016 . The Office of Naval Research developed and deployed the Experimental Forward Operating Base ( ExFOB ) , including photovoltaic energy , shelter insulation , small unit water purification , and energy efficient heating , lighting , and cooling . The Marine Corps established the Expeditionary Energy Office to increase combat effectiveness by reducing the need for liquid fossil fuel by 50 percent by 2025 , using liquid fuel for mobility only . The Defense Department plans to invest $ 9 billion to improve energy use in military operations through 2017 . Further reading . Admiral Samuel J . Locklear has called climate change biggest worry for the United States .