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The first recorded
geothermal system was a 1912 Swiss patent
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The ground absorbs 47%
of the sun's energy that reaches planet Earth. This amount
represents 500 times more than mankind needs every year.
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Over
a million geothermal systems have been installed since 1980 in
North America.
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Installing a geothermal
system in a typical home is equal, in greenhouse gas reduction, to
planting an acre of trees, or taking two cars off the road.
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Current geothermal
installations save more than 14 million barrels of crude oil per
year.
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If one in 12 California
homes installed a geothermal system, the energy saved would equal
the output of nine new power plants.
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