About SONI

SONI (System Operator for Northern Ireland) is Northern Ireland's Transmission System Operator. We manage the high-voltage electricity grid so power can flow from where it is generated to where it is needed. 

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The high-voltage network brings power from generators to supply the electricity distribution network. The grid powers every home, business, school, hospital, factory and farm in Northern Ireland. We are responsible for a safe, secure and reliable supply of electricity: now, and in the future.

We forecast when and where electricity is needed across Northern Ireland: hour-to-hour, day-to-day, and year-to-year. We work to ensure there is enough electricity for industry to prosper, and for employment to grow. Our work is essential today, as well as being a crucial investment for future generations.

Our people

Our people dedicate themselves to a better transmission grid, for the benefit of all. We achieve this goal with a combination of expert skills from a wide range of experience.


Working with us gives you the opportunity to be part of an organisation that is committed to delivering on our mandate of managing and operating the transmission grid across Northern Ireland. We offer a challenging yet collaborative and team-orientated work environment where high performance, knowledge and continual development are valued. Our aim is to attract and retain excellent staff. 

Graduate Opportunities

Find out more about our Graduate Scheme for engineering, business and IT graduates using the button below