2025/26 Proposed TLAFs Excel Version
The proposed Transmission Loss Adjustment Factors (TLAFs) which have been calculated by the TSOs, based on the approved TLAF methodology (SEM-12-049), for 2025/26 (1 October 2025 to 30 September 2026).
2025/26 Proposed TLAFs PDF Version
The proposed Transmission Loss Adjustment Factors (TLAFs) which have been calculated by the TSOs, based on the approved TLAF methodology (SEM-12-049), for 2025/26 (1 October 2025 to 30 September 2026).
All-Island Transmission System Performance Report 2024
This report contains transmission system data and performance statistics for the transmission system in Ireland and Northern Ireland for the year 2024 (1 January 2024 – 31 December 2024).