Charging documentation
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 ascending |
|---|---|
| Guidance CMP430 TNUoS Charging to support MHHS arrangements | 24 Oct 2024 |
| What are Triads? | 19 Aug 2024 |
| TNUoS in 10 minutes | 8 Feb 2024 |
| Guidance - TNUoS Offshore Guidance | 18 Jan 2024 |
| Guidance - Transmission Demand Residual Tariffs | 11 Sep 2023 |
| Guidance - Calculation of the Generator TNUoS Adjustment Tariff for the purposes of the Limiting Regulation 2023/24 | 2 Feb 2023 |
| T and T Model Training Videos | 31 Jan 2023 |
| Guidance - TNUoS demand zone for DCCs | 1 Mar 2022 |
| Guidance - TNUoS onshore local circuit charges | 25 Jun 2021 |
| Guidance - TNUoS modelling for 3 ends HVDC circuits | 26 Mar 2021 |
BSUoS guidance
Connection charging guidance
| Name | Published Sort ascending |
|---|---|
| Customer Charge Modeller 2024-25 | 20 Sep 2024 |
| Application Fee Calculator (2024/25) | 28 Mar 2024 |
| Guide to Termination Amounts | 10 Jan 2024 |
| Ad-hoc Charges Guide | 31 Mar 2023 |
| A Guide to Connection Charges | 31 Mar 2023 |
AAHEDC guidance
| Name | Published Sort ascending |
|---|---|
| A guide to AAHEDC charges | 11 Dec 2018 |
General charging guidance
| Name | Published Sort ascending |
|---|---|
| Revenue & Charging Forum 2024 | 17 Oct 2024 |
| NESO Revenue and Charging Forum 2024 Q&A | 16 Oct 2024 |
| Basic overview of our electricity charges | 22 May 2024 |
| TNUoS-BSUoS Non Final Demand Declaration Guidance Note | 20 Feb 2023 |
STAR Billing System Guidance
Archive forum materials
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 ascending |
|---|---|
| Charging Statement Issue 5 - April 2023 | 31 Mar 2023 |
| Charging Statement Issue 4 Revision 1 - August 2022 | 18 Aug 2022 |
| Charging Statement Issue 4 Revision 0 - April 2022 | 1 Apr 2022 |
| ESO Charging Statement Issue 3 Revision 0 - 1 April 2021 | 13 Apr 2021 |
| ESO Charging Statement Issue 2 Revision 0 - 1 April 2020 | 30 Mar 2020 |
| ESO Charging Statement Issue 1 Revision 3 - 1 April 2019 | 21 Oct 2019 |
| Draft Issue 14 Revision 0 - 1 April 2018 | 16 Mar 2018 |
| Draft Issue 13 Revision 0 - 1 April 2017 | 27 Mar 2017 |
| Draft Issue 12 Revision 0 - 1 April 2016 | 3 Apr 2016 |
| Issue 11 Revision 0 - 1 April 2015 | 16 Mar 2015 |
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 ascending |
|---|---|
| TNUoS Onshore Locational Security Factor Consultation - Decision | 4 Jan 2021 |
| 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 |
| Inv Ahead of TEC Guidance Document V2.0 draft | 7 Aug 2017 |
| Delay Charge Open Letter | 24 Jun 2015 |
| Investment Ahead of TEC Guidance Document | 24 Jun 2015 |
Open letters, consultations and notices
These documents are open letters and informal consultations relating to TNUoS charges.
Tertiary Open Letter
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