The energy market is poised for a revolution as councils and social housing landlords across the UK prepare to take on the Big Six providers by supplying their own electricity. From Plymouth and London, to Nottingham, Bristol and Berwickshire, local authorities are working on plans to set themselves up as electricity and gas retailers, and promising to significantly undercut the traditional suppliers. Some are promising to cut at least £100 from the average household dual-fuel bill of about £1,300 a year. Initially, the new suppliers will look to sell electricity generated by other power companies but in the longer term many plan to produce their own energy, through renewable sources such as wind and solar. The move comes amid growing discontent at the big energy firms, which have consistently come at the bottom of customer satisfaction surveys after continued price hikes over the past few years.