Simple Energy Estimator

      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.

      Enter the following information and click "calculate".
      Your results will display below.

      * Required
      * Number of luminaires:    
      * Average number of hours on per year:    
      * Your electric cost per kilowatt hour:   EUR 
      * Watts per luminaire used in current system:    
      * Watts per luminaire used in proposed system:    
      Cost to upgrade each luminaire*:   EUR 

      Cost of Electricity
      Current system:   per year
      Proposed system:   per year
      Energy Savings (with proposed system)
      Each luminaire:   per year
      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 luminaire. You may want to subtract any costs that would have been incurred with the current system.