Interesting Facts about Alternative Energy
600 percent: The highest average efficiency of a ground source heat pump in the winter, compared to 250 percent for air-source pumps.
15: Percentage of the average household electricity bill that goes toward lighting alone.
9: Lowest wind speed (in miles per hour) from which it’s efficient to harness wind power.
750: Number of electricity providers that offer a green alternative.
280,475: Number of photovoltaic cells shipped domestically in 2007.
7: Percent of energy that came from renewable sources in 2007.
53: Percent of that renewable energy that was drawn from biomass fuels, the largest supplier, followed by hydroelectric (36%); solar, geothermal, and wind energy all contributed 5% or less.
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1 comment:
its facts take from life from Planet green...we as human need to think from now...for future generation
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