Energy Efficiency and Renewable Energy Website (
U.S. Department of Energy website with extensive links to publications, other websites.

Home Energy Saver (
Interactive government website that allows you to specify a residence, then calculates energy and financial performance of energy design elements that you specify.

NC Solar Center (
The NC Solar Center has information and factsheets on many issues related to solar energy in N.C. – including the N.C. Renewable Energy Tax Credits.

NC Sustainable Energy Association (
This is a renewable energy membership organization that has both practical and policy information about renewable energy technologies in North Carolina.

Energy Star (
A federal government website that describes energy-efficient products and maintains lists of "energy star"-rated products.

Oak Ridge National Lab Building Technology Center (
This is a building technology site with publications/factsheets, links.

Southface Energy Institute (
Nonprofit organization that has factsheets on many issues related to residential energy efficiency and building science.