The Regulatory Authorities, in Northern Ireland and the Republic of Ireland, today publish the SEMC Imperfections Charge Decision Paper.
SONI and EirGrid, together the Transmission System Operators (TSOs) for the all-island Single Electricity Market (SEM), control the transmission of electricity and the management of various network constraints. These network constraints create additional costs within the SEM as the TSOs are required to allow for such constraints in real time and increase or decrease individual generator’s output of electricity to ensure the balance between supply and demand of electricity is maintained at all times.
Constraint costs are recovered through the Imperfections Charge and this Decision Paper details the Imperfections tariff to be applied in Tariff Year 2023/24.
Responses to the Consultation Paper (SEM-23-049) are attached as appendices and have been duly considered when making the decisions contained within this Decision Paper.
Constraints Costs (Imperfections Charges) October 2023 – September 2024 and Reforecast Report October 2021 – September 2022 Decision Paper
15 September 2023