Calculate Payback for LED Lighting with costs & interest
This calculator gives payback time, and both the annual and life-time cost & savings figures for energy, maintenance, and CO2 production.
It calculates Lighting Power Density from area of at least 500 square feet per fixture, and provides the maximum fixtures allowed from a target LPD. Check the DOE for your requirement.
Non-residential electric usually has additional cost for lower than 90% Power Factor.
Calculator will not perform properly if removed from this site.
ENSURE THAT REPLACEMENT HAS EQUIVALENT LIGHTING PERFORMANCE.
Power of long-term Leasing or Financing brought by the Return from Savings.
Select entry with mouse, enter and step w/ Tab key.
Step back with Shift + Tab.
If residential lighting, enter ≥ 95 for PF (Power Factor).
Parameters for energy statistics:
Simple Comparison Options (Not photometric)
LPD (Lighting Power Density) = Watts ÷ Sq-Ft
Sq-Ft per Fixture = Total
Target LED LPD = fixtures