How does Brexit impact the Single Electricity Market in Ireland? The UK-EU Withdrawal Agreement, which was entered into between the UK and the EU (effective from 1 February 2020), specifically caters for the island of Ireland Single Electricity Market (SEM) as part of the Northern Ireland Protocol, also known as the Windsor Framework. The Windsor Framework provides, among other things, that Northern Ireland (NI) continues to be bound by certain EU laws that allow the SEM to continue to function. As a result, there have been no significant changes to SEM following IP completion day. This could, however, change over time if laws diverge in the two jurisdictions. The Windsor Framework provides that certain EU laws in respect of electricity generation, distribution, transmission, supply and trading will continue to apply to NI for at least four years after the end of the transition period. After the four-year initial period (which expired in December 2024), and each subsequent four-year period, NI may withdraw from the Windsor Framework on the basis of ‘democratic consent’. The Windsor