Transmission Losses: News
Enhancing our customer enquiry processes using Elexon Support
In our recent customer feedback survey, a number of customers expressed the need for a more efficient and streamlined process to submit and track enquiries and concerns related to the BSC and its services.
We’ve taken this feedback on board and have been working on an enquiry management tool called Elexon Support. Elexon Support will provide you with a centralised platform to easily manage your interactions with us.
2024/2025 Estimated Transmission Losses Adjustment values published
Following the implementation of Modification P350 on 1 April 2018, Estimated Transmission Losses Adjustment (ETLMO) values have been calculated for each season across the 2024/25 BSC Year. The Imbalance Settlement Group approved the revised Estimated Transmission Losses Adjustment (ETLMO) values for use from 1 April 2024 at its December 2023 meeting.
Consultation: P350 Draft Reference Network Mapping Statement 2024-25
This consultation seeks views on the draft reference Network Mapping Statement (NMS) for use in the allocation of Transmission Loss Factors (TLFs) for BSC Year 2024-2025.
New 2023/2024 Estimated Transmission Losses Adjustment values published
Following the implementation of Modification P350 on 1 April 2018, ETLMO values have been calculated for each season across the 2023/24 BSC Year. The Imbalance Settlement Group approved the revised Estimated Transmission Losses Adjustment (ETLMO) values for use from 1 April 2023 at its January 2023 meeting.
New TLFA-I014 Data for Summer 2022 on the Elexon Portal
Following the Grid Supply Point (GSP) Group Metering Issues identified in GSP Groups _C and _J, Elexon has looked at further impacts the corrected data could have on Settlement processes.
After completing some additional analysis, we identified that there were some impacts on Transmission Loss Factors (TLFs). These impacts were small, mostly affecting the Summer 2022 period.
Transmission Loss Factor values for Spring 2022 Part A Season available
Source: BSC PortalThe BM Unit Specific TLF values for the Spring 2022 Part A BSC Season, which runs from 1 April 2022 to 31 May 2022, are available on the Elexon Portal under the TLFs Determination page. This file provides the TLF for each BM Unit that is registered to be active during this period.
- BSC Portal > Operational Data > TLFs determination
Latest Prevailing Network Mapping Statement available
Source: BSC PortalP350 Draft reference Network Mapping Statement consultation 2022-23
This consultation seeks views on the draft reference Network Mapping Statement for use in the allocation of Transmission Loss Factors (TLFs) for BSC Year 2022-2023.
TLF values: Spring 2021 Part A Season available
The Transmission Loss Factors (TLF) for each BM Unit that is registered to be active during the 1 April 2021 to 31 May 2021 has been published.
New ETLMO values for BSC Year 2021/22 published
The revised Estimated Transmission Losses Adjustment (ETLMO) values for use from 1 April 2021 have been approved. The approval was made by the Imbalance Settlement Group at its January meeting.
Prevailing Network Mapping Statement for BSC Year 2020/2021 published
The latest version of the Prevailing Network Mapping Statement is now available for BSC Year 2021/22 via the Elexon Portal.
TLF values for the Winter 2020 Season now available
The Transmission Loss Factors (TLF) for each BM Unit that is registered to be active during the 1 December 2020 to 28 February 2021 has been published.
BSC Insights: The ways P350 has changed allocation of Transmission Losses
In this Insight article, Mehdi Jafari considers the way implementation of Modification P350 changed the allocation of Transmission Losses.