The ‘go-live’ date for a new Single Electricity Market (SEM) across the Republic of Ireland and Northern Ireland, dubbed I-SEM, could be delayed byeight months to May 2018.

The existing SEM is being ‘rebuilt’ so it is consistent with market models emerging in the EU.

 Electricity trading was due to begin in the I-SEM on 1 October 2017 but a ‘stocktake’ for the regulators said “the overall level of risk “places considerable doubt over the achievability of an I-SEM Go Live date of October 2017.