Imperfections Charge 2021/22 and Reforecast Report 2019/20

13 August 2021

 Imperfections Charge 2021/22 and Reforecast Report 2019/2020 Decision Paper

The Regulatory Authorities, in Northern Ireland and the Republic of Ireland, today publish the Imperfections Charge Decison 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 the 2021/22 tariff year.

Responses to the Consultation paper (SEM-21-053) are attached as appendices and have been duly considered when making the decisions contained within this paper.