Light Bulb Savings Calculator

Welcome to the light bulb energy savings calculator. See how the lighting in your house compares to the U.S. average and how big of an impact energy-efficient bulbs can make.

How many light bulbs do you have in your home?
(Don’t forget to count the multiple bulbs found in some lighting fixtures.)

Number of Light Bulbs:50

Use the slider below to select the approximate number of each type of bulb at home:

  • Incandescent: 0
  • CFL: 0
  • LED: 0


You have more light bulbs than fewer light bulbs than the same number of light fixtures as the average U.S. household.

You use more efficient bulbs than fewer efficient bulbs than the same amount of efficient bulbs as the average.

You are likely spendingsaving about more than the average U.S. household each year on lighting energy, due to your choice of bulbs.

If every household in the United States took the same steps on lighting efficiency:

  • It would save It would waste $ in energy costs.

  • It would be like shutting down It would be like adding coal power plants.

  • It would be like taking It would be like adding cars off the road. cars onto the road.

  • It would reduce CO2 emissions by It would increase C02 emissions by metric tons.

  • It would cut emissions equivalent to It would increase emissions equivalent to railcars of coal.

Now try increasing the number of efficient bulbs in your home and see the impact it could have if other U.S. households took the same steps.

Calculator Methodology and Credits

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An incandescent light bulb.

Photograph by Anthony Pleva, Alamy

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