On the day that National Grid has released its Winter Outlook report, Greenpeace has released new research that shows a shift to Light Emitting Diode (LED) light bulbs in homes could reduce peak electricity demand in the winter by five per cent (2.7 GW).

The research was carried out by respected energy analyst Chris Goodall from who also runs website Carbon Commentary, and shows a business and government drive to promote switching of homes, street lights and offices to energy efficient LED light bulbs would see a huge reduction in the UK’s electricity demand for lighting – more than two Hinkley nuclear plants’ worth of electricity.

Even without a wholesale switch, it would be significant and should allay fears about the lights going out because lighting is responsible for nearly a third (29%) of total winter peak electricity demand, and a complete switch would halve that.

  1. Savings from switching entirely to LED in homes will save about 2.7 GW of peak winter demand.
  2. Street lighting switch will save a further 0.5 GW
  3. Office and other commercial building could save about 4.5 GW of peak demand
  4. An approximate payback period from switching the most used bulbs in the typical domestic house to LED is about 2 years at current prices. An expenditure of £62 on replacing about 21 of the bulbs in living areas would cut annual electricity bills by at least £24.

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