SONI Mid-Year Performance Report 2025/26

SONI is Northern Ireland's Transmission System Operator (TSO). That means we manage the electricity grid to ensure that power can flow from where it is generated to where it is needed.

Our team of experienced, expert engineers manage the electricity grid, second-by-second, every day of the year, to ensure power can flow safely, securely and reliably to homes, farms and businesses across Northern Ireland. We don't generate or sell electricity, rather we balance consumer demand with the generation made available by the companies who produce it.

We are licensed and regulated by the Utility Regulator, and we work together to operate the All-Island Single Electricity Market with our counterparts in the Republic of Ireland.

At SONI, we also plan grid to meet Northern Ireland's future energy needs. We have a pivotal role to play in supporting the implementation of Northern Ireland Energy Strategy as an important step on the journey to net-zero carbon emissions by 2050.

As part of the Evaluative Performance Framework (EPF), we have published our Mid-Year Performance Report covering the period October 2025 to March 2026. The report provides an update on delivery against the actions and commitments set out in SONI’s Forward Work Plan 2025-26, across SONI’s four core Transmission System Operator (TSO) roles.

The Mid-Year Performance Report can be accessed via below:

Your views are important to us and as a result SONI would like to invite customers and stakeholders to attend a virtual event (via MS Teams) on our Mid-Year Performance Review to be held on Wednesday 13th May 2026 from 10am to 12pm.

To register for this virtual event please input your details here by 12pm Tuesday 12th May 2026: SONI Mid-Year Performance Registration Form