2024-25 Approved TLAFs v1.1

23 September 2024

SONI Transmission Outage Summary 2024 (Week 37-38)

23 September 2024

Summary of the SONI Transmission Outages over the next two weeks

2024 September - SOEF Markets - FASS - DASSA Design Recommendations Paper Final

16 September 2024

The DASSA Design Recommendations Paper sets out the TSOs recommendations for the design of the DASSA, which aims to establish a robust framework for the procurement of system services on a day-ahead basis. The design recommendations presented in this paper are subject to approval by the SEM Committee and are intended to align with the broader objectives of the System Services Future Arrangements initiative.

SONI Transmission Outage Summary 2024 (Week 36-37)

13 September 2024

Summary of the SONI Transmission Outages over the next two weeks

2024 September - SOEF Markets - SS Charge Consultation Workshop Q&A

10 September 2024

SONI and EirGrid held a virtual industry workshop on Thursday 5th September 2024, where the TSOs and our partners Afry presented the All-Island System Services Supplier Charge Consultation Paper and hosted a Q&A session. This document contains the questions asked at the workshop and the TSOs' responses.

​ Harmonised Other System Charges Methodology Statement Applicable from 01st October 2024

10 September 2024

Other System Charges (OSC) are levied for non-compliance to provide necessary services to the system. This document sets out the harmonised arrangements for the calculation of Other System Charges by the Transmission System Operators (TSOs), EirGrid in Ireland and SONI in Northern Ireland respectively, in accordance with the Regulatory Authorities' (RAs) Decision Paper SEM-24-057.

2024 September - SOEF Markets - FASS- SS Charge Consultation Workshop Slides

10 September 2024

SONI and EirGrid held a virtual industry workshop on Thursday 5th September 2024, where the TSOs and our partners Afry presented the All-Island System Services Supplier Charge Consultation Paper and hosted a Q&A session. This document contains the slides presented at the workshop.

SONI Transmission Outage Summary 2024 (Week 35-36)

06 September 2024

Summary of the SONI Transmission Outages over the next two weeks