Find out about what National Grid do
We are National Grid. We own and manage the electricity transmission network in England and Wales. We are also responsible for balancing the system.
There are two types of electricity network: transmission and distribution. Transmission networks carry electricity long distances around the country at high voltages. Distribution networks run at lower voltages and take electricity from the transmission system into homes and businesses.
National Grid owns and manages the electricity transmission network in England and Wales to which different energy sources are connected.
We are responsible for transmitting electricity from where it is generated (for example, power stations and large wind farms) to towns and cities, the main centres of demand. To do this, we use a national network of overhead lines and underground cables which operate at high voltages.
We are also responsible for balancing the system and making sure that the supply of electricity meets the demand on a second-by-second basis.