How much money and power you save by switching old bulbs or tube lights to LED.
How this works
Yearly kWh saved = bulbs x (old watts – LED watts) x hours per day x 365 / 1000. A 9 W LED gives the same light (about 800 lumens) as a 60 W incandescent or a 15 W energy saver (CFL). A 40 W tube light is replaced by an 18 W LED tube.
Questions people ask
How do I use the LED Bulb Savings tool?
Fill in the fields, starting with “Number of bulbs”, “Old bulb watts” and “LED watts”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the LED Bulb Savings tool free?
Yes. The LED Bulb Savings tool is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.