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At the same year, Scottish Hydro Electric Transmission filed planning application and started public consultations. [3] Originally, the cable was planned to run from Shetland to 320 km (200 miles) to Portgordon on the Scottish mainland, [3] [4] [5] and then on to Blackhillock substation, near Keith, Moray via 25 km (16-mile) underground cable.
SEGL1 will run from Torness in Southeast Scotland to Hawthorn Pit substation in Murton, County Durham. [3] Landfall in England will be to the North of Seaham, on the Durham Coast. [4] It is developed by Scottish Power Transmission plc (SPT) and National Grid Electricity Transmission plc (National Grid) [3] with a budget of £1.294 billion. [1]
Note that the National Grid in Scotland includes lines operating at 132 kV, but they are not included in this diagram for consistency. Onshore and offshore wind farm connection cables at 220 kV and above are included even if they are not operated by the National Grid.
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 ...
The link augments the existing capacity provided by double-circuit AC transmission lines which join the Scottish and English transmission grids. It consists of 422 km (262 miles) of cable, of which 385 km (239 miles) is under water. [1] It is the first subsea link at 600 kV. [8]
A power outage (also called a power cut, a power out, a power blackout, power failure or a blackout) is a loss of the electric power to a particular area. Power failures can be caused by faults at power stations, damage to electric transmission lines, substations or other parts of the distribution system, a short circuit , cascading failure ...
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The company has its origins in two public sector electricity supply authorities. Scottish Hydroelectric, founded as the North of Scotland Hydro-Electric Board in 1943, was established to design, construct and manage hydroelectricity projects in the Highlands of Scotland, and took over a further generation and distribution responsibilities when the UK's electricity industry was nationalized in ...