Saturday, September 6, 2008

What Role Does Renewable Energy Play in the United States?

The use of renewable energy is not new, by any means. 5 generations (125 years) ago, wood, which is one form of biomass, supplied up to 90 percent of our energy needs. Due to the convenience and low prices of fossil fuels, wood use has fallen in the United States.

Overall total consumption from renewable sources in the United States totaled 6.8 quads (quadrillion Btu) in 2007, or about 7 percent of all energy used nationally. Consumption from renewable sources was at its highest point in 1997, at about 7.2 quads.

Over half of our renewable energy goes to producing electricity. The next largest use is the production of heat and steam for industrial purposes. With Renewable fuels, such as ethanol, are also used for transportation and to provide heat for homes and businesses abroad.

Renewable energy plays an very important role in the supply of energy. When renewable energy sources are used, the demand for fossil fuels is reduced drastically. Unlike fossil fuels, non-biomass renewable sources of energy (hydropower, geothermal, wind, and solar) do not directly emit greenhouse gases.


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