Power Grid Map

Great Britain Power Grid Map

Substations, transmission lines and power plants across England, Scotland and Wales on one map, with the companies that own, operate and develop them.

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Coverage

What the map holds for Great Britain

Figures from the Tera dataset as of 8 October 2026. The map also shows transmission lines, towers, transformers, switches and compensators by voltage level.

58,192
Substation records
4,682
Operating power plants
7,758
Plants in development
309
Data centres
Tera power grid map of England, Wales, southern Scotland and Ireland with the layers panel open: the transmission network linking the main cities, offshore wind farms and their export cables in the North Sea and Irish Sea, and interconnectors to Ireland and the continent
Great Britain's grid with its offshore wind farms, export cables and interconnectors

  • Transmission and distribution

    The 400 kV and 275 kV transmission network, Scotland's 132 kV transmission lines, and the distribution substations beneath them.

  • Generation and pipeline

    Operating plants and the much larger pipeline of wind, solar and storage projects in development, each linked to its developers and owners.

  • Large loads

    Data centres and EV charging stations, so you can see where new demand is clustering.

Market context

How the grid works in Great Britain

Three companies own Great Britain's transmission network: National Grid Electricity Transmission in England and Wales, SP Energy Networks in southern Scotland and SSEN Transmission in northern Scotland. The National Energy System Operator (NESO) runs the system, and fourteen distribution licence areas are operated by six distribution network groups.

The connection queue grew to several hundred gigawatts, far more than the system needs, which led to a reform that reorders projects by readiness and strategic fit. Constraints between Scotland and England remain the biggest bottleneck, so pipeline data matters as much as what is already operating.

See Great Britain on the map

Tell us which regions you are working on and we will walk you through the substations, lines and projects there.

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