Research published by DECC on energy use from lighting (published July 2014)

Numbers‘We estimate that by 2024, if 80% of lights were converted to low energy bulbs, this would result in an average saving of around 230 kWh/year per home, or annual energy use for lighting of around 290 kWh.’

Additional information – ‘The Lighting Study examines high and low users of lighting, lighting modelling, projections, potential efficiency savings and outdoor lighting.’

Source: DECC, Further analysis of the household electricity survey: lighting study (final report), dated 21 May 2013, published 9 July 2014