Websites with information about building an energy-efficient home

There are a lot of websites out there with information on how create an energy efficient home. Below are a list of a few of our favorites.

• Renewable Energy Direct - Definitions of Renewable energy sources, CFL energy saving calculator.
  
• Efficiency Maine - Information about how to get rebates and credits for creating an energy efficient home.
  
• Energy Star - Energy efficent product information among other things.