General Lighting, Lighting 101

Light Bulb Energy Calculator

Lightbulb energy calculator-2022

Traditional incandescent and halogen light bulbs, waste a lot of their energy by turning energy into heat rather than light itself. LED light bulbs are far more efficient, with lower wattages and longer lifespans.

Although LED energy saving light bulbs cost a little more to buy than their old technology equivalents, they save you money in the long run by reducing the amount of electricity you use.

The calculator below details the annual savings you can make on your electricity bills per light bulb. It also shows the difference in CO2 emissions between standard and energy saving light bulbs, and what this means in terms of environmental impact.

Modern lamps, like LEDs, CFLs, and halogens only use around 20% of the electricity used by incandescent light bulbs and can last over 10 times as long. Calculate your energy savings with this convenient online calculator.

Existing light bulb:*
Select wattage:*
How many lamps are you using now?*
No. of burning days per year:*
No. of burning hours per day:*
Energy costs per Kw/hr (pence):*

About Nicky Walker

Nicola is a lighting specialist at The Lightbulb Company with a keen awareness of the important role lighting plays in our everyday lives. She enjoys discovering new ways in which lighting can affect science, mental health and of course, most of all, reduce our carbon footprints.

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