SONI Limited, incorporated in Belfast in June 2000, is a limited company registered under Companies House number NI038715. Its registered office is at Castlereagh House, Belfast BT6 9RT. The company's SIC code, 35120, places it squarely in the electricity transmission sector. That means it is involved in operating the high-voltage network that moves power from generation sources to distribution networks and large users across Northern Ireland. As a transmission system operator, SONI's role typically involves balancing electricity supply and demand in real time, managing grid constraints, and facilitating connections for new generators. It also works to maintain the reliability and security of the electricity system, often coordinating with neighbouring systems and the wider European grid. Given its name and location, it is highly likely that SONI is the System Operator for Northern Ireland, which is the organisation responsible for the day-to-day operation of the region's electricity transmission system. The company holds an A-rated Skilled Worker sponsor licence, meaning it is authorised to hire non-UK nationals under the Worker route. This indicates an active willingness to recruit international talent. While no specific employee numbers are available, a business of this type and scale typically employs a few hundred staff, including engineers, analysts, and support personnel. No information is provided about international branches or offices, so any foreign presence is uncertain. However, the nature of electricity transmission involves cross-border coordination, particularly with the Republic of Ireland through the Single Electricity Market. SONI Limited's core focus remains the safe and efficient transmission of electricity within Northern Ireland.

SONI Limited, incorporated in Belfast in June 2000, is a limited company registered under Companies House number NI038715. Its registered office is at Castlereagh House, Belfast BT6 9RT. The company's SIC code, 35120, places it squarely in the electricity transmission sector. That means it is involved in operating the high-voltage network that moves power from generation sources to distribution networks and large users across Northern Ireland. As a transmission system operator, SONI's role typically involves balancing electricity supply and demand in real time, managing grid constraints, and facilitating connections for new generators. It also works to maintain the reliability and security of the electricity system, often coordinating with neighbouring systems and the wider European grid. Given its name and location, it is highly likely that SONI is the System Operator for Northern Ireland, which is the organisation responsible for the day-to-day operation of the region's electricity transmission system. The company holds an A-rated Skilled Worker sponsor licence, meaning it is authorised to hire non-UK nationals under the Worker route. This indicates an active willingness to recruit international talent. While no specific employee numbers are available, a business of this type and scale typically employs a few hundred staff, including engineers, analysts, and support personnel. No information is provided about international branches or offices, so any foreign presence is uncertain. However, the nature of electricity transmission involves cross-border coordination, particularly with the Republic of Ireland through the Single Electricity Market. SONI Limited's core focus remains the safe and efficient transmission of electricity within Northern Ireland.