Half-Hourly (HH) Demand Tariffs

This data file contains the TNUoS tariffs related to Half-Hourly (HH) Demand. Broken down into Peak, Year-Round, Residual and Small Generator Discount adjustment. The overall floored HH tariff is also included. This file will be updated on a quarterly basis (when tariffs are published), to receive auto updates please register and subscribe to the TNUoS Tariffs Dataset.

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 19th October 2026 as follows:
Peak_£/kW → Peak GBP per kW
YearRound_£/kW → YearRound GBP per kW
HH_SGD_Adjustment_£/kW → HH SGD Adjustment GBP per kW
HHTariff(Floored)_£/kW → HHTariff Floored GBP per kW

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=6abe8416-149c-4c78-b65b-059eea19957a&limit=5`
Query example (via SQL statement)
`https://api.neso.energy/api/3/action/datastore_search_sql?sql=SELECT * from "6abe8416-149c-4c78-b65b-059eea19957a" LIMIT 5`

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

var data = {
  resource_id: '6abe8416-149c-4c78-b65b-059eea19957a', // 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=6abe8416-149c-4c78-b65b-059eea19957a&limit=5'
  fileobj = urllib2.urlopen(url)
  print fileobj.read()

Download (CSV)

Data Explorer

Table Information

Publication

Title	Publication
Type	string
Description	States what publication type the tariff relates to
Comment	Tariff Publication (Forecast, Draft or Final)
Example	Draft = Draft Tariff Publication for the given tariff year
Unit

Year_FY

Title	Financial Year
Type	integer
Description	Year in which the tariff relates to i.e. 2021 = 1 April 2020 to 31 March 2021 (2020/21)
Comment
Example	2021
Unit

Published_Date

Title	Date of Tariff Publication
Type	date
Description	Example would be that the 2021 Final tariffs we published 31 January 2020 (30/01/2020)
Comment
Example	2020/01/31
Unit

Zone_No

Title	Demand Zone No.
Type	integer
Description	Number Assigned to the Demand Zones 1 - 14
Comment
Example	1
Unit

Zone_Name

Title	Demand Zone Name
Type	string
Description	Name of Demand Zone
Comment	Example: Demand zone 1 = Northern Scotland
Example	Northern Scotland
Unit

Peak GBP per kW

Title	Peak Security Transport Zonal Tariff
Type	number
Description	Locational Peak Secrity Tariff (unfloored) in £/kW
Comment	Element of overall HH Demand Tariff
Example	1.234567
Unit	£ per kW

YearRound GBP per kW

Title	Year-Round Transport Zonal Tariff
Type	number
Description	Locational Year-Round Tariff (unfloored) in £/kW
Comment	Element of overall HH Demand Tariff
Example	1.234567
Unit	£ per kW

HH SGD Adjustment GBP per kW

Title	Half Hourly Demand Small Generator Discount Adjustment
Type	number
Description	Half-Hourly Demand Small Generator Discount adjustment in £/kW
Comment	Element of overall HH Demand Tariff
Example	1.234567
Unit	£ per kW

HHTariff Floored GBP per kW

Title	Half Hourly Demand Tariff (Floored)
Type	number
Description	Overall HH Demand Tariff in £/kW
Comment	Overall HH Demand Tariff - Floored at £0/kW
Example	1.234567
Unit	£ per kW

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Half-Hourly (HH) Demand Tariffs

CKAN Data API

Data Explorer

Data Explorer

Table Information

Publication

Year_FY

Published_Date

Zone_No

Zone_Name

Peak GBP per kW

YearRound GBP per kW

HH SGD Adjustment GBP per kW

HHTariff Floored GBP per kW