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Lighting

get energy saving bulbs. 10%-15% of your electricity usage is gobbled up by lighting. If you use a particular light for an average of four hours or more a day, then have a little think about replacing it with an energy-saving equivalent. They use around a quarter of the electricity and last up to 12 times longer. Energy efficient bulbs only cost around a fiver, but you'll end up saving over 10 quid a year on your bills.

switch off. Bit of an obvious one, but always turn lights off when you leave a room. And adjust your curtains or blinds to let in as much light as possible during the day - that way you won't be tempted to reach for the light switch.