Stability midterm (Y-1) utilisation report 25/26

This dataset provides an indicative overview of the monthly utilisation of BMU’s with a Stability Y-1 contract - based on instructions provided by NESO’s Control Room. This file contains data for the year 2025-2026. The data includes the unit identifier (BMU-ID), start and cease times of instructions and the total utilisation time for each instructed period. Time values are all given in GMT.

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=e0c86d21-8ad1-4ba3-a112-b2bbcf5277ce&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "e0c86d21-8ad1-4ba3-a112-b2bbcf5277ce" LIMIT 5`

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

var data = {
  resource_id: 'e0c86d21-8ad1-4ba3-a112-b2bbcf5277ce', // 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=e0c86d21-8ad1-4ba3-a112-b2bbcf5277ce&limit=5'
  fileobj = urllib2.urlopen(url)
  print fileobj.read()

Download (CSV)

Data Explorer

Table Information

BMU ID

Title	BMU ID
Type	string
Description	Unique ID for the Balancing Mechanism Units
Comment
Example
Unit	BMUID-1

Inertia (in MVA.s)

Title	Inertia (in MVA.s)
Type	number
Description	Contracted Inertia of the utilised unit
Comment
Example
Unit	MVA.s

Month & Year

Title	Month & Year
Type	string
Description	The month and year of the utilisation period
Comment
Example	Jul-25
Unit

Utilisation Start Datetime

Title	Utilisation Start Datetime
Type	datetime
Description	The starting date and time of the utilisation period. Time values are all given in GMT
Comment
Example	28/07/2025 10:00
Unit

Utilisation End Datetime

Title	Utilisation End Datetime
Type	datetime
Description	The ending date and time of the utilisation period. Time values are all given in GMT
Comment
Example	28/07/2025 18:30
Unit

Hours Utilised

Title	Hours Utilised
Type	datetime
Description	The duration of utilisation of the unit.
Comment
Example	08:30:00
Unit	Hours and Minutes

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Stability midterm (Y-1) utilisation report 25/26

CKAN Data API

Data Explorer

Data Explorer

Table Information

BMU ID

Inertia (in MVA.s)

Month & Year

Utilisation Start Datetime

Utilisation End Datetime

Hours Utilised