Businesses in the electricity category supply power to homes and organisations, arranging the delivery of electricity through the national distribution network. Domestic and business customers can usually choose from different tariffs, such as fixed-term or variable-rate plans, with options that may include time-of-use rates or electricity matched with renewable generation. Suppliers also explain contract terms, usage and expected charges. Typical services include setting up or transferring an account, issuing bills, taking meter readings, providing smart meters where available, and helping customers understand or query their consumption and charges. Some suppliers offer online account management, payment arrangements and support for customers who are struggling to pay. Electricity suppliers in Great Britain are licensed and regulated by Ofgem, which oversees areas including supplier conduct and consumer protections.