Energy
Energy savings calculator
Compare the annual energy use and cost of your existing lighting with an LED replacement.
Energy saved per year–
Cost saved per year–
CO₂ avoided per year–
Reduction–
| Existing: energy per year | |
|---|---|
| LED: energy per year |
Method: energy = power × quantity × hours; the LED figure is reduced by the dimming percentage you enter. All inputs are yours to change. The defaults (400 W existing, 150 W LED, 20 luminaires, 4,000 h, €0.12/kWh, 0.40 kg CO₂/kWh) are examples only, not a quote or a measured value. Enter the system power of the old luminaire including its ballast, and use your own tariff and your grid’s emission factor. Maintenance and purchase costs are not included.
