Homeowners and other persons of property will benefit a great deal from this website, which is sponsored by the Department of Energy, along with significant support from other federal agencies. Essentially, the site allows users to learn how they can make their home more efficient and all users need to do is submit their zip code to get started. Upon submitting their zip code, users will see a comparison of the energy costs of an average home in that particular geographic area as compared to an energy efficient home in the same area. After the calculation is returned, visitors can fine-tune their calculation by entering additional data, such as the total floor area of the dwelling and so on. There are a number of extras on the site, including state-by-state lists of energy saving programs and construction standards. Finally, there is also a glossary of energy terminology which gets to the basic essentials of such phrases as radiant barrier and color temperature.