Flexibility data table (FLX1) 2025

One of the FES outputs is an agreed set of data tables containing the GB FES values for the electricity system flexibility which are included in this dataset. The file is the 2025 version of the dataset.

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=299bc6c8-7608-4946-ab0a-5bc22129c897&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "299bc6c8-7608-4946-ab0a-5bc22129c897" LIMIT 5`

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

var data = {
  resource_id: '299bc6c8-7608-4946-ab0a-5bc22129c897', // 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=299bc6c8-7608-4946-ab0a-5bc22129c897&limit=5'
  fileobj = urllib2.urlopen(url)
  print fileobj.read()

Download (CSV)

Data Explorer

Table Information

Flexibility type

Title	Flexibility type
Type	string
Description	The specific system for flexibility.
Comment
Example	Electricity system flexibility
Unit	N/A

Flexibility sub-type

Title	Flexibility sub-type
Type	string
Description	Specifies supply or demand side that the data correlates to
Comment
Example	Demand side flexibility
Unit	N/A

Data item

Title	Data item
Type	string
Description	Sub category for the flexibility data
Comment
Example	Demand side response
Unit	N/A

Unit

Title	Unit
Type	string
Description	Measurement used on data item
Comment
Example	GW
Unit	N/A

Pathway

Title	Pathway
Type	string
Description	FES pathway that this value is for
Comment
Example	Holistic Transition
Unit	N/A

Fuel

Title	Fuel
Type	string
Description	Fuel the data item refers to
Comment
Example	Electricity
Unit	N/A

Detail

Title	Detail
Type	string
Description	Specific data item to which this value refers
Comment
Example	Residential Peak Shifting (Smart/TOUTs effect)
Unit	N/A

2024

Title	2024
Type	number
Description	Year of data for data item
Comment
Example	47639
Unit	N/A

2025

Title	2025
Type	number
Description	Year of data for data item
Comment
Example	47640
Unit	N/A

2026

Title	2026
Type	number
Description	Year of data for data item
Comment
Example	47641
Unit	N/A

2027

Title	2027
Type	number
Description	Year of data for data item
Comment
Example	47642
Unit	N/A

2028

Title	2028
Type	number
Description	Year of data for data item
Comment
Example	47643
Unit	N/A

2029

Title	2029
Type	number
Description	Year of data for data item
Comment
Example	47644
Unit	N/A

2030

Title	2030
Type	number
Description	Year of data for data item
Comment
Example	47645
Unit	N/A

2031

Title	2031
Type	number
Description	Year of data for data item
Comment
Example	47646
Unit	N/A

2032

Title	2032
Type	number
Description	Year of data for data item
Comment
Example	47647
Unit	N/A

2033

Title	2033
Type	number
Description	Year of data for data item
Comment
Example	47648
Unit	N/A

2034

Title	2034
Type	number
Description	Year of data for data item
Comment
Example	47649
Unit	N/A

2035

Title	2035
Type	number
Description	Year of data for data item
Comment
Example	47650
Unit	N/A

2036

Title	2036
Type	number
Description	Year of data for data item
Comment
Example	47651
Unit	N/A

2037

Title	2037
Type	number
Description	Year of data for data item
Comment
Example	47652
Unit	N/A

2038

Title	2038
Type	number
Description	Year of data for data item
Comment
Example	47653
Unit	N/A

2039

Title	2039
Type	number
Description	Year of data for data item
Comment
Example	47654
Unit	N/A

2040

Title	2040
Type	number
Description	Year of data for data item
Comment
Example	47655
Unit	N/A

2041

Title	2041
Type	number
Description	Year of data for data item
Comment
Example	47656
Unit	N/A

2042

Title	2042
Type	number
Description	Year of data for data item
Comment
Example	47657
Unit	N/A

2043

Title	2043
Type	number
Description	Year of data for data item
Comment
Example	47658
Unit	N/A

2044

Title	2044
Type	number
Description	Year of data for data item
Comment
Example	47659
Unit	N/A

2045

Title	2045
Type	number
Description	Year of data for data item
Comment
Example	47660
Unit	N/A

2046

Title	2046
Type	number
Description	Year of data for data item
Comment
Example	47661
Unit	N/A

2047

Title	2047
Type	number
Description	Year of data for data item
Comment
Example	47662
Unit	N/A

2048

Title	2048
Type	number
Description	Year of data for data item
Comment
Example	47663
Unit	N/A

2049

Title	2049
Type	number
Description	Year of data for data item
Comment
Example	47664
Unit	N/A

2050

Title	2050
Type	number
Description	Year of data for data item
Comment
Example	47665
Unit	N/A

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Flexibility data table (FLX1) 2025

CKAN Data API

Data Explorer

Data Explorer

Table Information

Flexibility type

Flexibility sub-type

Data item

Unit

Pathway

Fuel

Detail

2024

2025

2026

2027

2028

2029

2030

2031

2032

2033

2034

2035

2036

2037

2038

2039

2040

2041

2042

2043

2044

2045

2046

2047

2048

2049

2050