Single Electricity Market Operator

The Single Electricity Market Operator (SEMO) facilitates the continuous operation and administration of the Single Electricity Market. SEMO is a joint venture between EirGrid plc and SONI Limited. The organisation is managed as a contractual joint venture between EirGrid, the Transmission System Operator (TSO) for Ireland, and SONI, the TSO for Northern Ireland. SEMO is licensed and regulated cooperatively by the Commission for Regulation of Utilities in Ireland and the Utility Regulator for Northern Ireland.