Our charging documentation page is where you can now find all of our charging statements and policy developments along with all the guidance documents and webinars you need if you're new to charging.
In this section you will find guidance materials to help you understand how, when and what you'll be charged.
The methodology we use to set tariffs and calculate charges is in the Connection and Use of System Code (CUSC), Section 14.
TNUoS guidance
Name | Published Sort descending |
---|---|
What are Triads? | 7 Nov 2018 |
TNUoS charging and billing timeline | 7 Nov 2018 |
TNUoS for new suppliers | 13 Dec 2018 |
TNUoS for offshore generators and the OFTO regime | 20 Dec 2018 |
TNUoS charges for generators | 4 Apr 2019 |
TNUoS tariffs for suppliers (includes link to recorded webinar) | 12 Jul 2019 |
TNUoS DCLF ICRP (TnT) Model Training - Presentation | 12 Oct 2020 |
Guidance - TNUoS Onshore Locational Security Factor | 21 Dec 2020 |
Guidance - TNUoS modelling for 3 ends HVDC circuits | 26 Mar 2021 |
Guidance - TNUoS onshore local circuit charges | 25 Jun 2021 |
BSUoS guidance
Name | Published Sort descending |
---|---|
BSUoS data sources | 27 Mar 2024 |
Connection charging guidance
Name | Published Sort descending |
---|---|
Ad-hoc Charges Guide | 31 Mar 2023 |
A Guide to Connection Charges | 31 Mar 2023 |
Customer Charge Modeller 2023-24 | 5 Oct 2023 |
Guide to Termination Amounts | 10 Jan 2024 |
Application Fee Calculator (2024/25) | 28 Mar 2024 |
AAHEDC guidance
Name | Published Sort descending |
---|---|
A guide to AAHEDC charges | 11 Dec 2018 |
General charging guidance
STAR Billing System Guidance
Archive forum materials
Archive documents
Archive forum materials
Archive forum materials
Archive forum materials
The charging statements describe our charges and the methodologies behind them.
Further information on the methodologies that underpin the charging statements can be found in two statements:
- the Use of System Charging Methodology Statement and the Connection Charging Methodology Statement.
- These statements are both included within Section 14 of the Connection and Use of System Code (CUSC).
Current Charging Statements
Archive
Name | Published Sort descending |
---|---|
Issue 6 Revision 0 | 23 Sep 2013 |
Issue 7 Revision 0 | 23 Sep 2013 |
Issue 6 Revision 1 | 23 Sep 2013 |
TNUoS Demand Zones Map - Geographical | 23 Sep 2013 |
Issue 9 Revision 0 - 2nd May 2013 | 23 Sep 2013 |
National Grids request to amend the form of the Statement of Use of System Charges | 23 Sep 2013 |
Issue 8 Revision 0 - 1 April 2012 | 23 Sep 2013 |
Issue 5, Revision 0 | 23 Sep 2013 |
TNUoS Generation Zones Map - Geographical | 23 Sep 2013 |
Ofgem letter of approving the form of the Statement of Use of System Charges | 23 Sep 2013 |
In this section you will find consultation documents and policy developments and decisions.
The methodology we use to set tariffs and calculate charges is in the Connection and Use of System Code (CUSC), Section 14.
Charging methodology policy decisions
These are policy decisions documents relating to TNUoS charging methodology that are not codified within the CUSC.
Name | Published Sort descending |
---|---|
Delay Charge Open Letter | 24 Jun 2015 |
Investment Ahead of TEC Guidance Document | 24 Jun 2015 |
Inv Ahead of TEC Guidance Document V2.0 draft | 7 Aug 2017 |
Inv Ahead of TEC Guidance Document V1_0-V2_0 track changes | 23 Oct 2017 |
Inv Ahead of TEC Guidance Document V2_0 | 23 Oct 2017 |
Open letter responses | 23 Oct 2017 |
TNUoS Onshore Locational Security Factor Consultation - Decision | 4 Jan 2021 |
Open letters, consultations and notices
These documents are open letters and informal consultations relating to TNUoS charges.
Name | Published Sort descending |
---|---|
Open Letter on GFAI User Commitment June 2014 | 20 Jun 2014 |
Open Letter on Options for Treatment of Western Isles Anticipatory Investment in TNUoS Charging Methodology | 15 Dec 2014 |
Transmission Investment response | 22 May 2015 |
Blue Transmission Response | 22 May 2015 |
ENA_OFTO_Forum_Response | 22 May 2015 |
Conclusions Letter on GFAI User Commitment April 2015 v1_0 | 22 May 2015 |
Balfour Beatty Response | 22 May 2015 |
DONG Energy Response | 22 May 2015 |
Informal Consultation on Potential Transmission Charging Arrangements at Exporting Grid Supply Points | 8 Jun 2015 |
Anticipatory Investment guidance letter May 2015 | 18 Jun 2015 |
Tertiary Open Letter
More from charging
One place for electricity network users to learn, contribute and shape the reform of GB's electricity network access and charging arrangements.
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