Indoor Lighting

Save money on your energy bill by purchasing ENERGY STAR® qualified compact fluorescent light bulbs (CFLs).  CFLs screw into standard lamp sockets, and give off light that looks similar to the common incandescent bulbs — unlike the fluorescent lighting we associate with factories, offices and schools.

Highly efficient and long lasting, today’s CFLs offer the benefits of fluorescent lighting while producing a steady, quiet, warm white light.

  • CFLs last up to 10 times longer than incandescent bulbs. 
  • CFLs use up to 75% less energy.
  • CFL bulbs are now available in a range shapes and sizes —as well as light colors.
  • CFLs pay for themselves in less than nine months.
  • Using CFLs in the five fixtures you use most often can potentially save you more than $65 per year. 
For more information about energy-efficient home lighting, download the CFL Fact Sheet.
  • Match light bulb wattage to your lighting needs. 
  • Concentrate lighting in reading and work areas. 
  • Dust your light bulbs regularly as dirt absorbs light and wastes energy. 
  • Turn off lights when leaving rooms.
Find out how much you can save by using energy-efficient bulbs in your recessed, track and spot lighting fixtures.
Try the New Lighting Calculator
ENERGY STAR® is a program sponsored by the U.S. Department of Energy and the Environmental Protection Agency that seeks to increase consumer awareness, interest and desire for energy efficient products, and is not affiliated with Duke Energy Corporation.