So how much money can be saved using LED bulbs? As always, it depends on how you use lights. You should know that the cost of electrical energy depends on: Energy = Power × Time will give you the energy use in joules or kilowatt-hours (kWh). Let's look at a typical modern kitchen as an example, with eight 50 W halogen lamps used for a time roughly averaged over a year:
[Cost based on 1 kWh of electrical energy costing 14p. This price is very likely to rise into the future.] So with a daily average use of 2 hours only for 8 lamps, the total energy saving is considerable and the associated cost saving very significant.
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