2. When you are liable for an electricity billYour liability when you have signed for the supplyYour liability when you contacted the supplier by telephoneYour liability when you contacted the supplier onlineYour liability when no one has contacted the supplierYour liability when someone else has been responsible for the supplySending the bill to another personPrivity of contractIn this section, all references to ‘the bill’ refer only to ‘charges due’ for the supply of electricity and do not include other charges such as credit sales charges for appliances. See here for more information about ‘charges due’.Your liability for the bill depends on how, or even whether, you contacted the supplier to say you required a supply of electricity.