We all want to save money on our energy bills. And the best way to do that is to compare the deals on offer from the 20-plus providers that are competing for our business. At MoneySuperMarket, we compare all major UK energy firms, from the 'Big Six' (British Gas, EDF Energy, Eon, nPower, Scottish Power and SSE) to the smaller and emerging providers such as iSupply and Spark Energy. You can find out more about the providers we compare in the list below.