Stage 5 PSA Skip Rate by Technology

This is a summary of the skip rate by technology type for each 30-min period, calculated at stage 5 from the post-system actions dataset.

18/11/2025: We have reissued all published datasets to correct a bug that affected the exclusion of long notice units. This is to ensure consistency of published metrics, and doesn't effect a change of the skip rates methodology.

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=007c5786-bd34-4a09-8bdf-be5d63eda16a&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "007c5786-bd34-4a09-8bdf-be5d63eda16a" LIMIT 5`

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

var data = {
  resource_id: '007c5786-bd34-4a09-8bdf-be5d63eda16a', // 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=007c5786-bd34-4a09-8bdf-be5d63eda16a&limit=5'
  fileobj = urllib2.urlopen(url)
  print fileobj.read()

Download (CSV)

Data Explorer

Table Information

settlement_period_start

Title	Date
Type	datetime
Description	Datetime slice at 30min intervals
Comment
Example	2025-07-01T23:55:00Z
Unit	DateTime UTC

bid_offer

Title	Bid_Offer
Type	string
Description	Whether a bid or offer was accepted
Comment
Example	Offer
Unit

fuel

Title	Technology
Type	string
Description	Technology type of BMU
Comment
Example	Battery
Unit

relative_technology_skip_rate

Title	Relative Technology Skip Rate (%)
Type	number
Description	A measure of avoidable skips, which accounts for the various technology types contributing to the overall skip rate within a specified period, calculated by dividing the total volume of skipped technology by the total in-merit volume of all technology types.
Comment
Example	30
Unit	Percentage

technology_specific_skip_rate

Title	Technology Specific Skip Rate (%)
Type	number
Description	A measure of avoidable skips, reflecting the frequency at which each technology type is skipped when it is in merit, calculated by dividing the total technology skipped volume by the total in-merit volume specific to each technology type.
Comment
Example	50
Unit	Percentage

fuel_in_merit_volume_MWh

Title	In-merit Volume (MWh)
Type	number
Description	The total volume for a specific technology type that was considered in-merit.
Comment
Example	70
Unit	MWh

fuel_skipped_volume_MWh

Title	Skipped Volume (MWh)
Type	number
Description	The volume for a specific technology type that was skipped.
Comment
Example	10
Unit	MWh

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Stage 5 PSA Skip Rate by Technology

CKAN Data API

Data Explorer

Data Explorer

Table Information

settlement_period_start

bid_offer

fuel

relative_technology_skip_rate

technology_specific_skip_rate

fuel_in_merit_volume_MWh

fuel_skipped_volume_MWh