If a federal energy efficiency resource standard (EERS) were adopted, one that demanded a electricity reduction of 15-percent and a natural gas reduction of 10-percent, 262 million metric tons of greenhouse gas emissions could be prevented.
That is the equivalent of taking 48 million cars off the road for one year.
Source:
http://cleantechnica.com/2009/03/23/energy-efficiency-could-save-us-168-billion/
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