Related sites:

• energystar.gov

  ENERGY STAR | The Simple Choice for Energy Efficiency

  

• green-energy-efficient-homes.com

  Green Energy Efficient Homes | Save Energy, Save Money, and Go Green

  

• energyfederation.org

  The EFI Energy Efficient Products Store | Home

  

• efficiencyvermont.com

  Efficiency Vermont

  

• sust-it.net

  Sust-it - simply efficient shopping

  

• enerdata.net

  Research on energy efficiency, CO2 emissions, energy consumption, forecast

  

• clarke-energy.com

  Clarke Energy | Fuel Efficient Distributed Generation