Capacity Market Auction Static Data

Static data published following each 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:

Clearing Price (£kW/year) → Clearing Price_GBP per kW per year

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=784fa703-1460-42cd-a8bb-fba4dcabac8d&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "784fa703-1460-42cd-a8bb-fba4dcabac8d" LIMIT 5`

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

var data = {
  resource_id: '784fa703-1460-42cd-a8bb-fba4dcabac8d', // 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=784fa703-1460-42cd-a8bb-fba4dcabac8d&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

Clearing Price_GBP per kW per year

Title	Clearing Price_GBP per kW per year
Type	number
Description	Clearing price of the auction
Comment	£kW/year
Example	25.00
Unit	£

Base Period for the Agreement

Title	Base Period for the Agreement
Type	string
Description	Base period for calculating capacity payments
Comment
Example	01/10/2014 - 30/04/2015
Unit

Auction Target Capacity_MW

Title	Auction Target Capacity_MW
Type	number
Description	Target capacity for Auction, detailed in Electricity Capacity Report
Comment
Example	44000
Unit	MW

Total Volume of Agreements Awarded

Title	Total Volume of Agreements Awarded
Type	number
Description	Aggregate volume of Capacity Agreements Awarded (MW), rounded to 3 decimal places
Comment
Example	43000.955
Unit	MW

Termination Fee 1 Rate

Title	Termination Fee 1 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£5000 /MW
Unit	£ per MW

Termination Fee 2 Rate

Title	Termination Fee 2 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£25000 /MW
Unit	£ per MW

Termination Fee 3 Rate

Title	Termination Fee 3 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£10000 /MW
Unit	£ per MW

Termination Fee 4 Rate

Title	Termination Fee 4 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£15000 /MW
Unit	£ per MW

Termination Fee 5 Rate

Title	Termination Fee 5 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£35000 /MW
Unit	£ per MW

Termination Fee 6 Rate

Title	Termination Fee 6 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£6500 /MW
Unit	£ per MW

Termination Fee 7 Rate

Title	Termination Fee 7 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£13000 /MW
Unit	£ per MW

Termination Fee 8 Rate

Title	Termination Fee 8 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£19500 /MW
Unit	£ per MW

Termination Fee 9 Rate

Title	Termination Fee 9 Rate
Type	string
Description	Termination Fee Rate
Comment
Example	£45500 /MW
Unit	£ per MW

Annual Penalty Cap

Title	Annual Penalty Cap
Type	string
Description	Annual Penalty Cap
Comment
Example	100%
Unit	%

Monthly Penalty Cap

Title	Monthly Penalty Cap
Type	string
Description
Comment
Example	200%
Unit	%

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Capacity Market Auction Static Data

CKAN Data API

Data Explorer

Data Explorer

Table Information

Auction Name

Clearing Price_GBP per kW per year

Base Period for the Agreement

Auction Target Capacity_MW

Total Volume of Agreements Awarded

Termination Fee 1 Rate

Termination Fee 2 Rate

Termination Fee 3 Rate

Termination Fee 4 Rate

Termination Fee 5 Rate

Termination Fee 6 Rate

Termination Fee 7 Rate

Termination Fee 8 Rate

Termination Fee 9 Rate

Annual Penalty Cap

Monthly Penalty Cap