Energy saving lightbulbs have always been a bright idea - for your pocket and the environment. They use up to 80% less electricity than a conventional bulb, and the latest designs can match the old-style incandescent bulbs for tone and brightness.
Technology has moved on a lot since energy saving bulbs were first invented - their looks have improved, they are smaller, and they cost less.
Now the old bulbs have been phased out, don't delay in switching - the more energy savers you use, the more you'll save.
If you replace just one bulb, that will avoid 80kg of CO2 emissions. If every household in the UK replaced two incandescent bulbs with low energy bulbs, electricity consumption for lighting would drop by 40 per cent, a saving of 11,985 GWh per annum (more than Sizewell B nuclear power station produces each year).