Daily Balancing Volume 2026-2027

On a settlement period basis, the total balancing cost (per MWh) is given, alongside the total volume of services provided and an average cost for the settlement period.

NOTE: As part of our ongoing efforts to align with data management best practices and improve consistency across datasets, the below column ids for this datafile will be updated on 16th October 2026 as follows:
Energy Imbalance (MWh) → Energy Imbalance MWh
Frequency Control Offers (MWh) → Frequency Control Offers MWh
Frequency Control Bids (MWh) → Frequency Control Bids MWh
Positive Reserve (MWh) → Positive Reserve MWh
Constraint Offers (MWh) → Constraint Offers MWh
Constraint Bids (MWh) → Constraint Bids MWh
Negative Reserve (MWh) → Negative Reserve MWh
Other (MWh) → Other MWh

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=e781da74-6c35-4296-81dd-250cee869c19&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "e781da74-6c35-4296-81dd-250cee869c19" LIMIT 5`

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

var data = {
  resource_id: 'e781da74-6c35-4296-81dd-250cee869c19', // 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=e781da74-6c35-4296-81dd-250cee869c19&limit=5'
  fileobj = urllib2.urlopen(url)
  print fileobj.read()

Download (CSV)

Data Explorer

Table Information

SETT_DATE

Title
Type	any
Description
Comment
Example
Unit

SETT_PERIOD

Title
Type	any
Description
Comment
Example
Unit

Energy Imbalance MWh

Title
Type	any
Description
Comment
Example
Unit

Frequency Control Offers MWh

Title
Type	any
Description
Comment
Example
Unit

Frequency Control Bids MWh

Title
Type	any
Description
Comment
Example
Unit

Positive Reserve MWh

Title
Type	any
Description
Comment
Example
Unit

Constraint Offers MWh

Title
Type	any
Description
Comment
Example
Unit

Constraint Bids MWh

Title
Type	any
Description
Comment
Example
Unit

Negative Reserve MWh

Title
Type	any
Description
Comment
Example
Unit

Other MWh

Title
Type	any
Description
Comment
Example
Unit

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Daily Balancing Volume 2026-2027

CKAN Data API

Data Explorer

Data Explorer

Table Information

SETT_DATE

SETT_PERIOD

Energy Imbalance MWh

Frequency Control Offers MWh

Frequency Control Bids MWh

Positive Reserve MWh

Constraint Offers MWh

Constraint Bids MWh

Negative Reserve MWh

Other MWh