In the UK, lighting makes up around 16% of total electrical use, accounting for 6% of a typical household’s energy bill if you include the cost of heating your home.
You can save between £1 and £4 per year for every traditional or halogen bulb you switch to an LED bulb with similar brightness. So, if the average household replaced all bulbs with LEDs, it would cost around £145 and save around £40 a year on bills.
If we look at one example, replacing a 50W halogen with an LED equivalent could cut your energy costs by £75 over the lifetime of the bulb – not including the price all the replacement halogen bulbs you no longer need to buy.