About our Network

Electricity is transported across the country through the National Grid at 275,000 or 400,000 volts. It is reduced to 132,000 volts for regional distribution at substations known as Grid Supply Points. From there it is distributed to further substations via overhead lines or underground cables at 132,000 volts. The voltage is reduced again to 33,000 volts and subsequently to 11,000 volts. 

This distribution network then carries electricity to individual towns and villages throughout the Midlands, the South West and South Wales where distribution substations transform the voltage to 230 volts.

Our network comprises over 216,000 kms of lines and cables and 184,000 transformers which are used to step down voltages. The transformers vary in size from large units capable of supplying a town, to small ones on poles serving remote cottages.

We are committed to providing a safe and reliable electricity supply, striving constantly to improve the quality of service to our customers.