SONI is the licensed independent electricity Transmission System Operator (TSO) for Northern Ireland.
Our high-voltage network brings power from generators and supplies the electricity grid distribution network; powering homes, farms and businesses. We are responsible for a safe, secure and reliable supply of electricity - now and in the future. We forecast when and where Northern Ireland needs electricity: hour-to-hour, day-to-day, and year-to-year. SONI is part of the Eirgrid Group.