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The National Grid is the high-voltage electric power transmission network supporting the UK's electricity market, connecting power stations and major substations, and ensuring that electricity generated anywhere on the grid can be used to satisfy demand elsewhere. The network serves the majority of Great Britain and some of the surrounding islands.
Frequency and voltage supplied to most premises by country Mains electricity by country includes a list of countries and territories, with the plugs , voltages and frequencies they commonly use for providing electrical power to low voltage appliances, equipment, and lighting typically found in homes and offices.
The 275/400 kV grid and substations in England and Wales are owned and operated by National Grid Electricity Transmission. It also operates the grid and substations in Scotland although the systems are owned by ScottishPower and Scottish & Southern Energy. In Northern Ireland grid and substations are owned and operated by Northern Ireland ...
Substation UK Substation 2 Length (km) Voltage (kV) Power (MW) Operational Remarks HVDC Cross-Channel: National Grid Interconnectors and RTE: Sellindge: Bonningues-lès-Calais: 73: ±270: 2,000: 1986: submarine HVDC: BritNed: National Grid Interconnectors and TenneT: Isle of Grain: Maasvlakte: 260: 450: 1,000: 2011: submarine HVDC: East–West ...
The National Grid covers most of mainland Great Britain and several of the surrounding islands, and there are interconnectors to Northern Ireland and to other European countries. Power is supplied to consumers at 230 volts AC with a frequency of 50 Hz.
The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.
English: Map of the National Grid in Great Britain, featuring all transmission lines and substations at 220 kV and above. Derived from OpenStreetMap data in February 2023, which is, as far as I am aware, an accurate representation of the current grid.
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