Green facility - USPS photoSince 2003, the United States Postal Service has reduced its energy use by 26 percent. Energy efficiency improvements at the USPS’s 33,000 buildings have saved enough energy to meet the power needs of 90,000 households for a year.

In 2011, alone, the USPS saved $22 million with its 1 trillion BTU reduction in energy use.

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Thanks to Steve G. for submitting the story.
USPS photo, green headquarters