Capacity Market Auction Capacity and Cost

The capacity awarded and forecast cost by delivery year by Capacity Market Auction.

NOTE: As part of our ongoing efforts to align with data management best practices and improve consistency across datasets, the column ids for this datafile will be updated on 9th September 2026 as follows:

Forecast Cost (£) → Forecast Cost_GBP

CKAN Data API

Access resource data via a web API with powerful query support.
Further information in the main CKAN Data API and DataStore documentation.

The Data API can be accessed via the following actions of the CKAN action API.

Query
`https://api.neso.energy/api/3/action/datastore_search`
Query (via SQL)
`https://api.neso.energy/api/3/action/datastore_search_sql`

Query example (first 5 results)
`https://api.neso.energy/api/3/action/datastore_search?resource_id=b1b58919-eaa4-40ea-80df-3d3e526f8223&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "b1b58919-eaa4-40ea-80df-3d3e526f8223" LIMIT 5`

A simple ajax (JSONP) request to the data API using jQuery.

var data = {
  resource_id: 'b1b58919-eaa4-40ea-80df-3d3e526f8223', // the resource id
  limit: 5 // get 5 results
};
$.ajax({
  url: 'https://api.neso.energy/api/3/action/datastore_search',
  data: data,
  dataType: 'jsonp',
  success: function(data) {
    alert('Total results found: ' + data.result.total)
  }
});

A simple ajax (JSONP) request to the data API using jQuery.

import urllib2
  url = 'https://api.neso.energy/api/3/action/datastore_search?resource_id=b1b58919-eaa4-40ea-80df-3d3e526f8223&limit=5'
  fileobj = urllib2.urlopen(url)
  print fileobj.read()

Download (CSV)

Data Explorer

Table Information

Auction Name

Title	Auction Name
Type	string
Description	Name of Capacity Market Auction
Comment
Example	Capacity Market Register 2027-28 (T-4)
Unit

Delivery Year

Title	Delivery Year
Type	string
Description	Delivery Year agreement awarded for, including multi-year agreements
Comment
Example	2025/2026
Unit

Capacity Awarded

Title	Capacity Awarded
Type	number
Description	Capacity Awarded (MW) by Auction and Delivery Year
Comment
Example	40900.123
Unit	MW

Forecast Cost_GBP

Title	Forecast Cost_GBP
Type	number
Description	Capacity Awarded * Clearing Price of Auction, by Auction and Delivery Year
Comment
Example	955623397.20
Unit	£

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Capacity Market Auction Capacity and Cost

CKAN Data API

Data Explorer

Data Explorer

Table Information

Auction Name

Delivery Year

Capacity Awarded

Forecast Cost_GBP