Average home. The average home creates more pollution than the average car. One inexpensive and energy- efficient way you can cut your home-related pollution is to replace old light bulbs and fixtures with energystar-qualified lighting. Changing just five conventional bulbs to energy-efficient bulbs can save an estimated $60 per year. That's a $6 billion energy savings for americans and an energy savings equivalent to the annual output of more than 21 power plants. And if every american household did this, together wed keep more than one trillion pounds of greenhouse gas out of our air.