The Irish company is the third-largest supplier in Northern Ireland, with more than 50,000 domestic customers.It added:"As a result of this review, we will be focusing exclusively on the business market and, over time, our intention is to no longer serve the residential market.
"This will involve working collaboratively with key stakeholders, including the Utility Regulator, and with our residential customers to ensure a managed approach. The firm said it understood the news would be unsettling for some customers but said there would be no interruption to supply and customers do not need to take any action.Alliance Party MLA David Honeyford said the announcement raised a number of"very serious concerns".