Transmission Development Plan for Northern Ireland

October 2022
The Utility Regulator has published its decision paper approving the Transmission Development Plan 2021-2030 (TDPNI)

The TDPNI is SONI’s annual report setting out the planned development to be carried out by SONI and NIE Networks on the Northern Ireland electricity transmission system over the next ten years. This is work that is required to maintain the system and to enable the energy transition and further decarbonisation of our energy usage.

We consulted on the draft TDPNI earlier this year, and published our response to
the consultation before submitting the document to the Regulator, who consulted on it again. Our response to their consultation can be found here. Thank you to all who provided feedback.

The final document is available here.