As the Tennessee Valley Authority deals with record afternoon electricity demand during the current heat wave, a home in Lenoir City is actually selling power back into the system. Utilities are paying premium prices during peak demand periods to supply power to businesses and homes. Instead of contributing to the load, a Near-Zero-Energy home is contributing to the solution. Combine super-energy-efficient technologies with the ability thanks to rooftop solar collectors to sell back power to the system, and a Near-Zero-Energy home becomes a power supplier. The Department of Energy's Oak Ridge National Laboratory has been designing and implementing the Near-Zero Energy Homes concept in conjunction with the Tennessee Valley Authority. The concept is working, in the near-triple-digit heat, in locations such as a Habitat for Humanity community in Lenoir City, Tenn., where the power meters sometimes run backward as the homes generate more energy than they consume.