Reducing energy use means saving fossil fuels, the primary source of energy. If every American home replaced just one light bulb with an Energy Star-qualified bulb, this would save enough energy to light more than 3 million homes for one year and prevent greenhouse gases equivalent to the emissions of more than 800,000 cars.
Each year, more than $13 billion worth of energy leaks from houses through small holes and cracks. This costs each family more than $150 per year.
Energy conservation tips