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What we do
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UK electricity and gas systems
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US electricity system
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UK system
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US system
Key facts
4,479 miles of overhead line
420 miles of underground cable
4,326 miles of high pressure gas pipeline
We own and operate the electricity transmission system in England and Wales. We operate (but do not own) the two electricity transmission networks in Scotland.
We own and operate the gas transmission network in Great Britain.
We own and operate the UK assets and a portion of the subsea cable of the electricity interconnector between England and France. We also own and operate four liquefied natural gas storage facilities.