SONI is the electricity Transmission System Operator (TSO) for Northern Ireland. The Evaluative Performance Framework (EPF), which was introduced for the SONI 2020 – 2027 price control, provides for an evaluation of SONI’s performance.
Stakeholder responses
On 6 October 2025 we asked stakeholders for their views on the SONI Annual Forward Work Progamme (FWP) 2025/2026.
We are now publishing the responses submitted, as per the published guidance.
Assessment of the Annual FWP
Following the November stakeholder meeting, the independent panel will make its assessment of SONI’s FWP for 2025/2026 and submit their recommendation report to us (by the end of the year).
In turn, we will then publish the panel’s report along with our decision on whether to accept the panel’s recommendation. Our determination of SONI’s FWP will include the calculation of a financial reward (or penalty) using the methodology set out in the EPF Guidance.
Copies of all documents can be made available in large print, Braille, audio cassette and a variety of relevant minority languages if required.