Calculate the energy savings you’ll gain by relamping your lighting system.
Also find out how long it will take to recoup your full investment for the new system.

I have fixtures, which are on for an average of hour(s) per year.
Currently my electric costs £
per kilowatt hour.
My current system uses
Watts per fixture.
The proposed system
Watts per fixture.
Each new fixture would cost me*:
Calculate how much I can save with the new system.
Your Current system costs
per year.
Our system would cost you
per year.
Each fixture would save you
Your save in total per year
Using only your energy savings, you will get your full investment back in
* This cost should include the lamp, ballast, and labor required to replace the fixture. You may want to subtract any costs that would have been incurred with the current system.