Nick Clegg announced this week that agreements have been secured with the big six energy companies that could cut energy bills for millions of people. The commitments will mean that EDF, E.On, Br...itish Gas, Southern, Scottish Power and Npower - who supply 99 per cent of British homes with energy - will now write to customers every year to specifically tell them what the best tariff is for them and how to get it. Many people are currently paying far more than they have to. Some vulnerable customers - those assisted by the Warm Home Discount scheme - will be contacted twice a year. Customers will also be offered the best tariff if their contract comes to an end and if they contact their supplier at any time to ask. There are more than 120 different tariffs. Currently, seven out of 10 people aren't on the best tariff for them. The average customer tends to stay on theirs for years, despite the amount of energy they use varying over time. In 2010, 75 per cent of people did not change their tariff. The governm
