FACT 1: The DoD's total primary energy consumption in Fiscal Year 2006 was 1100 trillion Btu. It corresponds to only 1% of total energy consumption in USA. For those of you who think that this is not much then read the next sentence.
Nigeria, with a population of more than 140 million, consumes as much energy as the U.S. military.
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FACT 2: Defense Energy Support Center (DESC) sold $13 billion of energy to DoD services in FY2006. More than half of it was to Air Force.
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FACT 3: Oil accounts for more than three-fourths of DoD's total site delivered energy consumption. Oil is followed by electricity (slightly more than 10%) and natural gas (nearly 10%). In terms of fuel types, jet fuel (JP-8)<3> accounts for more than 50% of total DoD energy consumption, and nearly 60% of its mobility<4> fuel
FACT 4: Nearly three quarters of DoD site delivered energy is consumed by vehicles (or for mobility if you like). Only one quarter is consumed in buildings and facilities.<5> And yet all DoD/Federal energy conservation and efficiency efforts, initiatives, directives etc target almost completely buildings (called standard buildings in DoD jargon). Note also that standard buildings account for almost 90% of total buildings and facilities energy consumption.
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FACT 8: According to 2007 CIA World Fact Book there are only 35 countries in the world consuming more oil than DoD. Guess how many countries consume more oil per capita than the DoD? Only three.
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FACT 11: Since the military's war machines burns fuel at such intense rates, it becomes impractical to talk about consumption in miles per gallon. That is why fuel use in military applications is shown in "gallons-per-mile," "gallons-per-hour," and "barrels-per-hour."
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FACT 12: In 2006 Air Force consumed around 2.6 billion gallons of jet-fuel which is the same amount of fuel U.S. airplanes consumed during WWII (between December 1941 and August 1945).
FACT 13: American GI is the most energy-consuming soldier ever seen on the field of war.
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Copious amounts of information, internal links and footnotes here:
http://karbuz.blogspot.com/2007/05/us-military-energy-consumption-facts.html