LED Savings Calculator

Your details

The rated wattage printed on your current bulbs (incandescent, halogen, or CFL).
W
Used for the reference table comparison; does not affect the savings math.
The cost you pay for each replacement of your current bulb type.
USD
Rated life of your current bulb. Incandescent: ~1,000 hrs; halogen: ~2,000 hrs; CFL: ~8,000 hrs.
hrs
The rated wattage of the LED bulbs you are switching to. A 60 W incandescent is typically replaced by an 8-9 W LED.
W
Upfront cost of each LED bulb.
USD
Rated life of the LED. Most quality LEDs are rated 15,000-25,000 hours.
hrs
Total count of bulbs you are replacing across your home or facility.
Average daily run time per bulb. A living-room light is typically on 4-6 hours a day.
hrs/day
If the lights are not used every day (e.g. a vacation property), reduce this below 7.
days/week
Find this on your electricity bill. The US average in 2024 was about $0.16/kWh.
USD/kWh
How many years to project cumulative savings and replacement costs over.
years
Annual electricity savingsPays back in under a year
151.94USD

Electricity cost avoided per year by switching to LED

Energy saved per year949.6kWh
Payback period3.3months
Net savings over projection831.69USD
CO2 avoided per year812lbs
LED upfront cost50USD
Watts saved520W
Old bulbs50
LED bulbs151.94

Net savings over projection: 831.69

kWh saved/yr949.6
Watts saved520

You save about $151.94 per year on electricity.

  • Switching saves about 950 kWh of electricity every year across all 10 bulbs.
  • That is equivalent to keeping about 812 lbs (368 kg) of CO2 off the grid annually.
  • After 5 years, you will be ahead by $831.69 net (electricity savings plus avoided bulb replacements, minus LED purchase cost).

Next stepYour LEDs pay for themselves in about 3.3 months. The switch makes financial sense immediately.

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