LED Savings Calculator
Calculate annual energy and cost savings from switching incandescent or CFL bulbs to LED lighting.
Épargne annuelle
279.22 USD
Annual Savings vs Electricity Rate
Formule
## How to Calculate LED Savings LEDs use 75-85% less energy than incandescent bulbs and 30-40% less than CFLs while lasting much longer. ### Formula **Energy Saved = Bulbs * (Old Watts - LED Watts) * Hours/Day * 365 / 1,000** **Cost Saved = Energy Saved * Rate per kWh** ### Typical Equivalents - 60W incandescent = 9W LED - 100W incandescent = 15W LED - 150W incandescent = 23W LED
Exemple Résolu
Replace 20 incandescent 60W bulbs with 9W LEDs, used 5 hours/day at $0.15/kWh.
- 01Old annual kWh: 20 * 60 * 5 * 365 / 1,000 = 2,190 kWh
- 02LED annual kWh: 20 * 9 * 5 * 365 / 1,000 = 328.5 kWh
- 03Energy saved: 2,190 - 328.5 = 1,861.5 kWh
- 04Annual savings: 1,861.5 * $0.15 = $279.23
Questions Fréquentes
How long do LED bulbs last?
LED bulbs typically last 25,000-50,000 hours compared to 1,000 hours for incandescents and 8,000-10,000 for CFLs. At 5 hours/day, an LED lasts 13-27 years.
Are LEDs worth the higher upfront cost?
Yes. LED bulbs cost $2-5 each and save $5-10 per year per bulb in electricity. They pay for themselves in a few months and last years longer.
Do LEDs work with dimmer switches?
Most LEDs are dimmable, but you need to check the label. Dimmable LEDs require compatible dimmer switches designed for LED loads.