The BSUoS charge recovers the cost of day-to-day operation including the cost of balancing the electricity transmission system.
Who does this charge apply to?
Please note that there are exemptions to the below list.
✓ Final Demand Site
✓ Suppliers
✓ Directly connected Transmission demand
✕ Non-Final Demand Site
✕ Generators
✕ Distribution Network Operators
✕ Embedded Generators
✕ Interconnectors
BSUoS Charge
CMP308 and CMP361 came into effect on 1 April 2023, which changed the way BSUoS charges were recovered. CMP308 defined that BSUoS charges are recovered solely from Final Demand and CMP361 introduced an ex-ante fixed BSUoS tariff.
The BSUoS fixed tariffs and BSUoS monthly forecasts are published within the BSUoS data section below.
For more details on how BSUoS is charged, please go to paragraph 14.31 of the Connection and Use of System Code (CUSC).
For pre-April 2023 BSUoS Methodology, please refer to the Introduction to BSUoS - 2019 document.
Introduction to BSUoS
For more general information about the BSUoS charging process, please consult our introduction presentation.
Latest news and updates
2024/25 BSUoS fixed tariffs webinar slides
Published on 10 July 2023
2024/25 BSUoS fixed tariff publication
Published on 30 June 2023
2023/24 BSUoS fixed tariff webinar slides
Published on 8 February 2023
2023/24 BSUoS fixed tariff publication
Published on 31 January 2023
Useful information and documents
2024/25 BSUoS payment calendar - V2
Published on 22 April 2024
BPA_File specs for DAT Format_CMP3087_361
Published on 25 April 2023
Published on 10 February 2022
SFTP connection instructions for retrieving BPA and BCR reports for BSUoS
Step by step instructions on retrieving your BSUoS BPA and BCR
BSUoS data
News
Name Sort descending | Published |
---|---|
16.2.21 Western Link HVDC | 16 Feb 2021 |
2018-19 Incentive Recovery Webinar - Slide Pack | 18 Apr 2018 |
2024-25 BSUoS Fixed Tariffs Webinar Q and A - 7th July 2023 | 10 Jul 2023 |
BSUoS Charging Circular - 2017-18 RF Recovery | 25 May 2018 |
BSUoS Charging Circular - 2018-19 ESO Incentive Recovery | 25 May 2018 |
BSUoS Charging Circular - Billing Suspended - 21 September 2018 | 13 Sep 2018 |
BSUoS Charging Circular - Decision on Recovery of 2017-18 BSIS | 21 Dec 2017 |
BSUoS Charging Circular - Direct Debit Issue | 24 Sep 2018 |
BSUoS Charging Circular - NEW BSUoS Forecast | 11 Jun 2018 |
BSUoS Charging Circular - Provision of II Run Data | 14 Dec 2017 |
Useful information and documents
Name Sort descending | Published |
---|---|
BPA_File Specs for DAT Format_CMP308_361 | 25 Apr 2023 |
BSUoS Fixed Tariff Model Consultation - Webinar Q and A June 2022 | 1 Jul 2022 |
BSUoS Fixed Tariff Model Consultation 2 - Webinar Slides August 2022 | 16 Aug 2022 |
BSUoS Payment Calendar 2021-22 v9 | 7 Dec 2021 |
BSUoS Payment Calendar 23-24 v2 | 2 Oct 2023 |
BSUoS Payment Calendar 24-25 v1 | 25 Mar 2024 |
BSUoS Payment Calendar 24-25 v2 | 22 Apr 2024 |
ESO BSUoS SFTP Connection Instructions | 1 Nov 2023 |
Introduction to BSUoS Charges | 5 Feb 2019 |
SFTP Connection Instructions for Retrieving BPA and BCR Reports for BSUoS | 15 Jun 2018 |
Name Sort descending | Published |
---|---|
2024-25 BSUoS Fixed Tariffs Webinar Q and A - 7th July 2023 | 10 Jul 2023 |
BSUoS Fixed Tariff 2024-25 - Tariff Publication - 30 June 2023 | 30 Jun 2023 |
BSUoS Fixed Tariff Model Consultation - June 2022 | 24 Jun 2022 |
BSUoS Fixed Tariff Model Consultation - Webinar Slides June 2022 | 30 Jun 2022 |
BSUoS Fixed Tariff Webinar Slides - 7th July 2023 | 10 Jul 2023 |
BSUoS Fixed Tariff Webinar Slides and Recording - 5th April 2023 | 13 Apr 2023 |
Draft BSUoS FIxed Tariff 2023-24 | 11 Nov 2022 |
Draft BSUoS Fixed Tariff Webinar - Q and A | 25 Nov 2022 |
Draft BSUoS Fixed Tariff Webinar Slides | 23 Nov 2022 |
Final BSUoS Fixed Tariff 2023-24 | 31 Jan 2023 |
BSUoS Monthly Forecast
Here you find the forecast monthly BSUoS costs
Name Sort descending | Published |
---|---|
BSUos Outturn Chart and Commentary June 2022 | 1 Jul 2022 |
A note on our BSUoS updates published 15th May 2020 | 15 May 2020 |
BSUOS August 2018 Data | 9 Aug 2018 |
BSUOS December 2018 Data | 17 Jan 2019 |
BSUoS Forecast - Jul 2023 | 1 Jun 2023 |
BSUoS Forecast April 2022 | 1 Mar 2022 |
BSUos forecast April 2023 | 1 Mar 2023 |
BSUoS Forecast August 2022 | 1 Jul 2022 |
BSUoS Forecast August 2023 | 1 Jul 2023 |
BSUoS Forecast December 2022 | 1 Nov 2022 |
Current BSUoS data
Name Sort descending | Published |
---|---|
Current II BSUoS Data | 25 Apr 2024 |
Current RF BSUoS Data | 25 Apr 2024 |
Current SF BSUoS Data | 25 Apr 2024 |
Fixed Tariff Revenue vs Costs Report | 19 Apr 2024 |
CMP395 BSUoS Data
CMP381 BSUoS Data
Name Sort descending | Published |
---|---|
CMP381 II BSUoS Data | 11 Apr 2022 |
CMP381 SF BSUoS Data | 13 May 2022 |
CMP345/350 BSUoS data
Name Sort descending | Published |
---|---|
CMP345/350 II BSUoS Data | 2 Nov 2020 |
CMP345/350 SF BSUoS Data | 17 Nov 2020 |
Current BCR data
Name Sort descending | Published |
---|---|
2019-02-03 BCRNEW | 3 Feb 2020 |
2019-07-26 BCRNEW | 26 Jul 2019 |
2019-07-29 BCRNEW | 30 Jul 2019 |
2019-07-30 BCRNEW | 30 Jul 2019 |
2019-07-31 BCRNEW | 1 Aug 2019 |
2019-08-01 BCRNEW | 1 Aug 2019 |
2019-08-02 BCRNEW | 2 Aug 2019 |
2019-08-05 BCRNEW | 5 Aug 2019 |
2019-08-06 BCRNEW | 6 Aug 2019 |
2019-08-07 BCRNEW | 7 Aug 2019 |
Historical BSUoS data - II
Name Sort descending | Published |
---|---|
2017-2018 II | 3 Sep 2018 |
2018-2019 II | 6 Jan 2021 |
2019-2020 II | 6 Jan 2021 |
2020-2021 II | 21 Feb 2022 |
2021-2022 II | 21 Sep 2022 |
2022-2023 II | 19 Apr 2023 |
2023-2024 II | 11 Apr 2024 |
Historical BSUoS data - SF
Name Sort descending | Published |
---|---|
2000-2001 SF | 4 Apr 2014 |
2001-2002 SF | 5 Apr 2014 |
2002-2003 SF | 6 Apr 2014 |
2003-2004 SF | 7 Apr 2014 |
2004-2005 SF | 8 Apr 2014 |
2005-2006 SF | 9 Apr 2014 |
2006-2007 SF | 10 Apr 2014 |
2007-2008 SF | 11 Apr 2014 |
2008-2009 SF | 12 Apr 2014 |
2009-2010 SF | 13 Apr 2014 |
Historical BSUoS data - RF
Here you will find historic BSUoS data for all Reconciliation Final (RF) data for financial years dating back to 2001.
Name Sort descending | Published |
---|---|
2000-2001 RF | 5 Apr 2014 |
2001-2002 RF | 6 Apr 2014 |
2002-2003 RF | 7 Apr 2014 |
2003-2004 RF | 8 Apr 2014 |
2004-2005 RF | 9 Apr 2014 |
2005-2006 RF | 10 Apr 2014 |
2006-2007 RF | 11 Apr 2014 |
2007-2008 RF | 12 Apr 2014 |
2008-2009 RF | 13 Apr 2014 |
2009-2010 RF | 14 Apr 2014 |
Breakdown of operating margin (OPMR), based on forecast volume of reserve, forecast volume of frequency response required, annual weighting factors for STOR contracts, and forecasts of BSUoS charges.
Contains data and support for users of the National Electricity Transmission System (NETS). Here you will find the latest operational data, forecasts, and reports.
Use the ESO Data Portal to gain access to BSUoS Charges and Balancing Costs related datasets that are geared towards API compatibility, providing additional flexibility to end users.
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