How much you really save by switching to LED lights

Will LED Lights Save Money?

The most frequently asked question in lighting solutions is, “Will LED lights save money?” The answer is that LED lights consume around £80.00 of power over a 20+ year lifespan. CFL bulbs consume in excess of £120.00 over the same period and must be replaced every 5,000 hours. This gives LED lights the edge when it comes to net savings on both energy and lifespan.

How LED light bulbs save you money

The cost saving provided by LED lighting is due to two factors:

  1. LEDs require much less electricity to power than both traditional incandescent and halogen light bulbs, and energy efficient light bulbs (CFLs).
  2. They last much longer than their incandescent, halogen and CFL equivalents.

For example, a 60W halogen light bulb would be replaced with a 9W LED. That’s a reduction of 85% in electricity consumption. The LED bulb will also last for over 20,000 hours, as opposed to 2,000 hours for the halogen – ten times longer!

What about CFL bulbs? Using the same example, a 60W halogen equivalent would be an 11W CFL bulb, so the reduction in electricity consumption from CFL to LED would be 18%. A good quality CFL should last for around 8,000 hours, which is still less than half of the LED equivalent.

Calculate the cost savings of LED light bulbs

Now that we know why LED light bulbs are cheaper to run, we can now look at how you can calculate the amount of money you can expect to save by switching to LEDs.

The information you need to work this out is:

1. The wattage of your current light bulbs and spotlights.
2. The average length of time each light bulb is in use for per day.
3. Your current electricity rate per kilowatt hour (kWh, kW-h or kW h). The UK average at the time of writing is 14.71 pence p/kWh if paying by direct debit.
4. The cost of replacing each bulb with an LED equivalent.

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