Greening the Real World
Is your power bill 41 cents a day? It might be, if you live in Lenoir City, Tennessee
Children play in a Tennessee neighborhood where homes feature energy efficient technologies, resulting in some electric bills reaching less than 50 cents per day. The community was built in a partnership between Department of Energy's Oak Ridge National Lab and Habitat for Humanity.Most days, Lenoir City, Tenn. resident Kim Charles doesn’t even notice the solar panels on her roof, the hum of her SEER 17 heat pump water heater, or the integrated design that places most of her home’s plumbing within one wall, saving precious energy.
What she does notice is an electricity bill that averages about 41 cents per day and includes a 15 cent-per-kilowatt-hour credit from the Tennessee Valley Authority for sending electricity from her home back to the power grid.
Charles's home is among five in a local Habitat for Humanity community here fitted with the latest in energy-saving technologies as part of a research project by the Department of Energy’s Oak Ridge National Laboratory and the Tennessee Valley Authority.
Department of Energy Oak Ridge National Laboratory Researcher Jeff Christian led the effort to build low-energy homes with Habitat for Humanity. The community is a "living laboratory" for researchers to study the impact of energy efficient building practices and technologies."Creating more energy-efficient buildings is not only part of the overall solution but is the number one most cost-effective opportunity to reduce the nation's energy consumption and affect climate change," said Jeff Christian, a buildings technology researcher at ORNL and coordinator of the Habitat for Humanity project.
In the United States, buildings command 40% of the nation's overall energy use, ranking above both industry, at 32%, and transportation, at 28%. Buildings also produce 43% of U.S. carbon emissions, using 38.8 quadrillion BTUs of energy each year, for heating, cooling, ventilation, lighting, water heating, refrigeration, and other energy demands.
Christian said residential energy consumption, unless aggressively addressed, is expected to grow 1% per year until 2025. On the commercial side, energy use is projected to increase an average annual rate of 2% between now and 2025, he said.
http://www.energy.gov/news_section/6194.htm