Greenest Cities

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  • 040511 national Greenstate Gresham washington
  • 040511 national Greenstate washington1
  • 040511 national Greenstate portland oregan
  • 040511 national Greenstate California1
  • 040511 national Greenstate Gresham Oregon
  • 040511 national Greenstate bellingham washington
  • 040511 national Greenstate oregon
  • 040511 national Greenstate oregon
  • 040511 national Greenstate california
  • 041111 national beaverton
  • 041111 national Salem
Washington, D.C.

The nation’s capital came out on top in last month’s ranking using a 745,598,550 kWh of green energy annually. They get their green energy from various sources including, Washington Gas Energy Services, Constellation New Energy (a holding company for energy businesses) and Clean Currents (an independent green energy company). The city just became a Green Power Community in March 2011.

(Photo: Mark Wilson/Getty Images)

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