Footprintz LED tools

LED vs Incandescent Energy Savings

Compare annual electricity, replacement costs, carbon emissions, payback, and multi-year savings when switching to LED lamps.

Operating assumptions

Number of lamps Operating hours per day Operating days per year Electricity tariff (₹/kWh) Comparison period (years) Grid emissions (kg CO₂/kWh)

Current incandescent lamp

Lamp wattage (W) Ballast/other wattage (W) Lamp life (hours) Cost per lamp (₹) Replacement labor per lamp (₹)

Replacement LED lamp

Lamp wattage (W) Driver/other wattage (W) Lamp life (hours) Cost per LED lamp (₹) Replacement labor per lamp (₹)

Current annual energy: —
LED annual energy: —
Annual energy saved: —
Annual electricity cost saved: —
Annual replacement cost saved: —
Total annual saving: —
Estimated simple payback: —
Net saving over comparison period: —
Annual CO₂ reduction: —

Estimates include electricity plus averaged lamp replacement and labor costs. Payback uses the initial LED lamp purchase cost; multi-year net saving subtracts that purchase once. Taxes, demand charges, dimming, heat, failure variation, and financing are not included. Adjust the grid-emission factor for your location.