Free tools · Homes
LED savings calculator
Find out what swapping your old bulbs for LED saves. Enter the number of bulbs, their watts and hours a day. See the QAR saved on your Kahramaa bill, the CO2, and how fast the bulbs pay back.
Your savings
Fill in the form and press the button.
How we work it out
Typical watts for the same light come from the US Department of Energy: 60 W incandescent, 43 W halogen (energy-saving incandescent), 15 W CFL and 12 W LED. kWh saved = bulbs x watts saved x hours a day x 365 / 1000. Money uses the Kahramaa rate you pick. CO2 uses 0.58169 kg per kWh (Ember 2024). The default LED price of QAR 10 is our assumption. Change it to your shop price.
Sources
Questions
How much does an LED bulb save in Qatar?
Swapping one 60 W bulb for a 12 W LED saves 48 W. Used 5 hours a day, that is about 88 kWh a year. At QAR 0.13 per kWh that is about QAR 11 a year per bulb, and about 51 kg of CO2.
What LED wattage replaces a 60 W bulb?
About 12 W gives similar light, per the US Department of Energy comparison. Check the lumens on the box: about 800 lumens matches an old 60 W bulb.
Which Kahramaa rate should I use?
Use the rate of your top slab, because that is what each saved kWh is worth. Homes pay QAR 0.11, 0.13, 0.18, 0.26 per kWh as use rises. Most villas in summer are in the QAR 0.13 or 0.18 slab.
Is it worth replacing CFL bulbs?
The saving is small. A 15 W CFL to a 12 W LED saves only 3 W. Replace CFLs when they fail, not before.
Do LEDs reduce AC load too?
Yes, a little. Old bulbs turn most of their power into heat, which your AC then has to remove. This tool does not count that extra saving.
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