How much money will I save by switching to LED lighting?

Updated with info for the UK energy price cap in ...

This calculator lets you compare two products and calculate their total costs over a year of use, factoring in the purchase costs and the electricity usage.

Some energy saving LED bulbs might initially look a bit expensive to buy, but when compared with the old high energy alternatives the savings quickly stack up when you consider the running costs.

All LED bulbs will save you money, but working out exactly how much cash you will save can be difficult. Our savings calculator will tell you exactly how much you will save each and every year when you buy an energy efficient LED light bulb.

In October 2022 Ofgem's price cap limited the amount that electricity companies can charge in the UK, per-unit of electricity to 22.36p. This amount is the figure we will use to calculate electricity costs.

How does the Energy Price Cap work?

Confusingly, most of the official information provided about the energy price cap describes the price cap as being £... per year for a typical household on a variable rate tariff. This is not a maximum amount you will pay! If you use more than a 'typical houshold' then you will pay more than £..., and if you use less, you will pay less.

If you have a fixed-rate contract then it's slightly different, and naturally the fine details are a bit complicated because there's a government and an energy supply company involved, but you will probably pay no more than the new cap unit rates.

The capped unit rates for electricty (...p) and gas (...p) are much more useful than a total 'typical' annual amount for working out the cost to run any item. This is what you actually pay, (in addition to your supplier's daily standing change) no matter how much energy you actually use.