Consultation on amendments to SONI’s licence revenue formula to facilitate Clean Energy Package costs and k-factor changes.

The recent SONI tariff process in 2025 has highlighted a small number  of revenue issues which merit consideration. This includes the ring-fencing of monies collected for a potential liability arising from Clean Energy Package (CEP) costs and treatment of the k-factor interest rate. 

The Utility Regulator has published a public consultation and notice under Article 14 of the Electricity (NI) Order 1992 on proposed modifications to SONI’s transmission licence. These modifications are designed to address any potential  concerns. The revenue formula licence modifications will allow ring-fencing of CEP costs. We also propose to adjust the k-factor interest rate application from one to two years.

We welcome industry and stakeholder views and comments on the outlined licence modifications proposals and their effect. Any representations or objections with respect to the proposals may be made on or before 17:00 on Friday 15 May 2026.

Our preference is for responses to be sent via email to sean.lyons@uregni.gov.uk with cc to electricity_networks_responses@uregni.gov.uk

• Your response may be made public by the Utility Regulator. If you do not want all or part of your response or name made public, please state this clearly in the response by marking your response as ‘CONFIDENTIAL’.
• If you want other information that you provide to be treated as confidential, please be aware that, under the Freedom of Information Act 2000, there is a statutory Code of Practice with which public authorities must comply and which deals, amongst other things, with obligations of confidence. In view of this, it would be helpful if you could explain to us why you regard the information you have provided as confidential.

• Information provided in response to this consultation, including personal information, may be subject to publication or disclosure in accordance with the access to information regimes (these are primarily the Freedom of Information Act 2000 and the Data Protection Act 2018.

• As stated in the GDPR Privacy Statement for consumers and stakeholders, any personal data contained within your response will be deleted once the matter being consulted on has been concluded, though the substance of the response may be retained. 

• Copies of all documents can be made available in large print, Braille, audio cassette and a variety of relevant minority languages if required.

Ways to respond