Londoners are using nearly a fifth less electricity and seven per cent less gas since the financial crisis.
Latest government figures show that households have cut back on their energy bills between 2007 and 2012.
Hammersmith and Fulham used the fourth lowest amount of electricity across the capital last year, an average 3,588 kWh per home, below the London average of 3,983 kWh.
This was a drop of 7.8 per cent in the past five years.
However, residents in Kensington and Chelsea and Westminster left their lights on for the longest, using an average 4,915 kWh and 4,651 kWh respectively.
They were among just three boroughs to see a rise in electricity usage of eight and 9.2 per cent.
But Westminster residents were more frugal when it came to switching on the boiler. It had the fifth lowest gas consumption last year with households using an average of 11,320 kWh, a fall of 15.8 per cent.
Homes in Hammersmith and Fulham used 12,296 kWh (-18.1 per cent) and Kensington and Chelsea households used 12,930 kWh (-14 per cent) compared to the London average of 13,862 kWh.