U.S. Electricity Use Declines, Energy Efficiency Could be a Factor

While the economic recession explains the decline in sales in 2008 and
2009, it is much less clear why sales have continued to fall.

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[source: http://www.buildings.com/article-details/articleid/17177/title/us-electricity-use-declines-energy-efficiency-could-be-a-factor.aspx]