National Grid (Great Britain)
The National Grid is the high-voltage electric power transmission network in Great Britain, connecting power stations and major substations and ensuring that electricity generated anywhere in England, Scotland and Wales can be used to satisfy demand elsewhere. There are also undersea interconnections to northern France (HVDC Cross-Channel), Northern Ireland (HVDC Moyle), the Isle of Man (Isle of Man to England Interconnector) and the Netherlands (BritNed).
On the breakup of the Central Electricity Generating Board in 1990, the ownership and operation of the National Grid in England and Wales passed to National Grid Company plc, later to become National Grid Transco, and now National Grid plc. In Scotland the grid split in to two separate entities, one for southern and central Scotland and the other for northern Scotland, connected by interconnectors to each other. The first is owned and maintained by SP Energy Networks, a subsiduary of Scottish Power, and the other by SSE. However National Grid plc remain the System Operator for the whole UK Grid.
Read more about National Grid (Great Britain): History, Reserve Services and Frequency Response, Control of The Grid, Transmission Costs, Major Incidents
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