How Power Happens: Tracing the Sources of U.S. Energy
Green technology is on the rise, but the U.S. still consumes an enormous amount of fossil fuels
The U.S. consumed 94.6 quadrillion BTUs of energy in 2009, more than any other nation. It also produced more energy than any nation but China: some 73 quadrillion BTUs.Those 94.6 quads break down into 308 million BTUs per capita–the equivalent of about 50 barrels of oil for every American.
Transforming and moving energy is an inefficient process. About 75 percent is lost when cars and planes convert fossil fuel to motion, and 68 percent when plants convert it to electricity and transmit it across the nation’s 160,000 miles of high voltage lines.
Fossil fuels (mostly coal) generate nearly 70 percent of the electricity we use. The rest comes from nuclear power (20 percent) and renewable resources (10 percent.)
Check out how power in the U.S. happens.
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