PES / Distributor Areas
At the time of privatisation of the electricity industry there were fourteen Public Electricity Suppliers (PESs) in UK who replaced the old area and Scottish electricity boards. Whilst the geographical areas of these former PESs remain unchanged the industry itself is somewhat different. Although distribution has been separated altogether from supply, the former PES areas are used as the basis of current day distribution areas. The PES or Distribution area that you are in has a significant effect on your energy costs. This applies to standing charges, availability charges as well as unit rates.
To find out which PES / Distributor area you're in, simply consult the map below. Moving the mouse over the various areas shows the postcodes covered, useful if you're not sure which area you are in. Each area on the map links to a profile of the various distributors and their history.
Distributors and Suppliers
Distributors are responsible the the Energy Network - the pylons, underground cables, substations and so on. Everything from the Power Station to your business electricity meter. When there is a power cut or cables are downed by bad weather, it is the Distributor that deals with it. This is one of the reasons why changing supplier is so easy. The electricity supplier isn't responsible for the cabling, metering, etc - basically anything that could cause issues.
If you want to upgrade or downgrade your energy supply, then you need to talk to the distributor. If you are adding solar panels, wind turbines or any other generation and want to sell back to the grid, then again it's the distributor that you work with.
Knowing your PES / Distributor area will help you get a price, different areas have different standing charges and so on. But your distributor is not your supplier.
UK Distributor Map
Move mouse or cursor over the map to display postcodes covered, and click for additional information including PES Code.