Want to save £240 per year?

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Who doesn't want to save £240 a year!

Whilst LED bulbs would probably be a considered purchase for most, your investment could be repaid in as little as five months and could continue to save you money for the lifetime of the LED bulb.

LEDs last about 10 times longer than standard filament bulbs, and use 10% of the electricity of a standard bulb which means you can enjoy lower bills as a result. 

The total power consumption of the 10 lights with old-style bulbs comes to 600W or 0.6kW. Electricity is sold in units of kilowatt-hours (kWh) – the amount of energy that a 1kW device uses in an hour. So each hour the 10 lights consume 0.6kWh. Based on a typical unit price of 12.2p per kWh, the 10 lights will cost 7.3p per hour to run. The daily cost is therefore 73p if on for 10 hours. This is equivalent to £5.11 a week, £21.90 a month or £266.45 a year.

If you replace all the bulbs with a 6W LED equivalent, the running costs will be just one tenth – or 7.3p per day, 51p a week, £2.19 a month and £26.65 a year.

The savings are therefore 65.7p a day, £4.60 a week, £19.70 a month or £239.80 a year.

What would 10 of these 6W LED bulbs cost you? We found them for £8.99 each online, although their cost is likely to fall as they become more popular. Replacing all 10 would therefore cost £89.90, which would take less than five months to recoup. In the first year your net saving would be £149.90.

Better still, LED bulbs last a long time. Or, at least, they are supposed to.

Under a soon-to-be-implemented EU rule, they should have a minimum lifespan of 6,000 hours – which, at 10 hours a day, would mean your bulbs should last at least 18 months. But Which?, the consumer magazine, said some fell short of this standard in its recent tests.

However, some manufacturers say their LED bulbs should last 40,000 hours and not blow until you have switched them on and off 100,000 times.

You’d need a 12W conventional “low energy” bulb to provide the same amount of light as a traditional 60W bulb, so the saving here is a still substantial £213 a year, or £168 after the £45 typical cost of 10 bulbs.

LED bulbs are available in all shapes and sizes, and produce a variety of shades of light, such as “daylight” and “warm white”.

So you can use them to replace traditional bulbs of the bayonet and screw-in types, as well as the more modern mini-bayonet sockets used for small halogen spotlights and inset ceiling lights or downlights.

They come on instantly; there is none of the slight delay or flickering that you sometimes get with older-style low-energy bulbs of the “compact fluorescent” type.

They also generate little or no heat, making them safer alternatives to hotter bulbs.