Many homeowners and businesses turn to solar energy because of the environmental issues it combats. According to the U.S. Environmental Protection Agency, the average household produces about 2- metric tons of carbon emissions a year. Solar energy installed in a two-person household can reduce carbon emission by about 4 tons a year. 39% of carbon emissions are produced by buildings, according to the U.S. Green Building Council. Widespread adoption of solar energy by homeowners and businesses can have a real impact on the number of harmful emissions produced.