The U.S. military is working on its first “zero-energy” homes.
Environmental designers and green architects are meeting this week at Fort Campbell to draw up plans for two duplexes that will incorporate solar panels and geothermal technology. The goal is for the houses to produce as much energy as they consume from the power grid over a year.
The main source of renewable energy will be solar panels along the back of the home, but ground-source heat pumps will also be used. These pumps push water underground to feed heating and cooling units.The homes will also reduce electricity consumption by using ventilation, insulation and energy-efficient appliances.
The project is still in the design phase and won't be completed until 2010.
You can conserve energy at home too. Learn how here  .