The New Brunswick System Operator (NBSO) came into existence on October 1, 2004 with the proclamation of the Electricity Act (NB).

NBSO is a not-for-profit independent corporation whose primary responsibilities are to ensure the reliability of the electrical system and to facilitate the development and operation of a competitive electricity market in New Brunswick.

The NBSO oversees

• ensures transmission system reliability;
• access to and use of the transmission grid (the high voltage wires);
• and administers the Open Access Transmission Tariff (OATT) and the Market Rules.