Just six companies supply over 93% of the commercial and residential energy market. While the majority of businesses partner with these dominant brands, the smaller independent suppliers may offer greater savings over your current deal.
The so-called "Big Six" are the tier one brand giants operating in the industry. All suppliers had regional territories before deregulation and privatisation took effect in December 1990. Today location is not important. Consequently, your business can obtain a supply from any of these companies.
The data below shows the current commercial market share data in parentheses with the original region each supplied.
|Company Name||Geographic Base||Market Share|
|EDF||South East, London||20.4%|
|E.ON (Powergen)||Central, East Midlands||15.9%|
|Southern Electric||South England||12.2%|
Source: Cornwall Energy Market Share Reports.
All of these companies can supply any premises throughout England, Scotland, Wales and Northern Ireland. Eire has their own specific regulated market and arrangements.
All UK suppliers use a different mix of primary fuel sources to generate the electricity you use. The mix is vastly different from each supplier. The graph below shows the different classifications of coal, natural gas, nuclear and renewable sources.
Source: The Big Six suppliers and Ofgem.
Each supplier submits their fuel mix data to Ofgem each quarter who also publically display the results.
Ofgem have licensed 128 different companies to provide domestic and commercial buildings electricity supplies. In addition to these organisations, a further 39 companies only provide non-domestic premises with electricity. These are listed below, together with the company registration number in parenthesis.
If you do move from your current provider only your invoicing terms change. The cables connecting your premises to the National Grid transmission system won't change as they're owned and managed by the grid.
Almost all the companies listed above can supply both fuels either singularly or as a dual fuel contract.
Changing your current plan by signing up to a new company could reduce your costs.