Energy suppliers and tariffs

An energy supplier is a company that provides your home with electricity and/or gas. The UK has 41 energy suppliers; the market is still dominated by the Big Six (British Gas, E.ON, EDF Energy, npower, Scottish Power and SSE), although customers can also choose from 35 smaller suppliers.

Customers often feel relieved at the thought of having their electricity and gas provided by a large, often historic, utilities company, even though the Big Six offers vary from one supplier to the next (e.g., EDF Energy relies mostly on nuclear whereas Scottish Power’s fuel mix rests mostly on coal).

However, an increasing number of households take their time to find the most suitable deal. This often involves comparing the Big Six to smaller electricity and gas suppliers to find the cheapest prices or the most environmentally-friendly energy. With 41 suppliers on the market, there is something for everybody.

Supplier

Market share (%)

Customers (million)

British Gas Logo

27.37

13

EDF Energy Logo

11.58

5.5

e.on logo

10.53

5

npower logo

13.68

6.5

Scottish Power logo

11.79

5.6

SSE logo

20.21

9.6

Smaller suppliers

5

2

Source: company websites.
metadescription: 
Who are the UK's electricity and gas suppliers and what tariffs do they offer customers? Everything you need to know, in a nutshell.