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Grid capacity API

United Kingdom

Live

What the United Kingdom's grid operators publish about spare capacity, in one JSON shape. Each value says which way the power flows, for which technology and year, how the operator worked it out, how fresh it is and whether we may serve it.

Make a test callSee the request
Operators
8
Grid assets
7,062
Capacity series
109,705
Newest operator date
14 Aug 2026

Sources19

  • 16 served with values
  • 3 listed, values withheld

Sources

Where the numbers come from

Each operator publication we read, and what its terms let us serve.

How rights work →

Map

Every located asset

Drawn at the precision the operator published. Assets without a published location are listed but not drawn. Values live on each asset’s page.

Loading the map…

Operators

Who runs the grid in the United Kingdom

Query United Kingdom

One request for the whole country

Filter the search by country, then by direction, technology, availability type, firmness or year. Withheld records come back too, with their value set to null, so you can see where an operator publishes something we may not pass on.

Make a test callThe capacity model
curl "https://api.gridcapacityapi.com/v1/capacity/search?country=GB&direction=injection&limit=20" \
  -H "Authorization: Bearer gc_live_..."