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"We have passed peak light bulb. The average amount of electricity needed annually to light a UK home fell from 720 kilowatt-hours in 1997 to 508 kWh in 2012, a drop of 29 per cent.
"Brenda Boardman of the University of Oxford's Environmental Change Institute says this is largely down to the phasing out of inefficient incandescent light bulbs. 'Because of the amount we are switching to compact fluorescent light bulbs and LEDs, there is a huge drop in demand,' she says.
"From 2007 to 2012, the UK's peak electricity demand fell from 61.5 to 57.5 gigawatts. The benefits of efficient light bulbs are good news for the UK, which will have to work hard to maintain its electricity supply."