Find Payback from costs & interest with LED Lighting
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 LIGHTING REPLACEMENT HAS EQUIVALENT PERFORMANCE.
If residential lighting, enter ≥ 95 for PF (Power Factor).