Most of the country’s energy comes from the Big Six, the six biggest energy suppliers in the UK – these are: British Gas EDF Energy E.ON Npower Scottish Power SSE However there’ve been an increasing number of smaller providers, such as First Utility, Octopus Energy, and Ecotricity. They may not be as well-known as the ‘Big Six’ companies, however they do offer certain advantages: Some smaller suppliers specialise in green energy Many also come out on top for customer service, compared to the Big Six