Imperfections Charge 2021/22 and Reforecast Report 2019/20

25 June 2021

 21/22 Imperfections Consultation

The Regulatory Authorities, in Northern Ireland and the Republic of Ireland, today publish the Imperfections Charge Consultation 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 Consultation paper provides an estimate of Imperfection Costs for the 2021/22 tariff year.

This Consultation paper also describes the TSOs’ Reforecast Report for 2019/20 - see appendices below.”

Link to Appendix 1: Imperfections Revenue requirement

Link to Appendix 2: Imperfections Reforecast Report