UR Decision - SONI’s Transmission Development Plan for Northern Ireland 2023-2032

Published date22 January 2025
Year2025
Energy SectorElectricity Networks
1
SONI’s Transmission
Development Plan for
Northern Ireland 2023-32
Decision Paper 22nd January 2025
2
About the Utility Regulator
The Utility Regulator is the independent non-ministerial government department
responsible for regulating Northern Ireland’s electricity, gas, water and sewerage
industries, to promote the short and long-term interests of consumers.
We are not a policy-making department of government, but we make sure that
the energy and water utility industries in Northern Ireland are regulated and
developed within ministerial policy as set out in our statutory duties.
We are governed by a Board of Directors and are accountable to the Northern
Ireland Assembly through financial and annual reporting obligations.
We are based at Queens House in the centre of Belfast. The Chief Executive and
two Executive Directors lead teams in each of the main functional areas in the
organisation: CEO Office; Price Controls; Networks and Energy Futures; Markets;
Consumer Protection and Enforcement. The staff team includes economists,
engineers, accountants, utility specialists, legal advisors and administration
professionals.
3
Abstract
SONI is the Transmission System Operator (TSO) for Northern Ireland and is
responsible for ensuring continuity of electricity supply for homes and businesses
across Northern Ireland. In order to do so, SONI must plan investment in the
transmission network.
The Transmission Development Plan for Northern Ireland (TDPNI) is the proposal for
the development of the NI transmission network and interconnection over the ten
years from 2023. This plan presents projects that are expected to be needed for the
operation of the transmission network in the short and medium-term.
Audience
This document is likely to be of interest to regulated companies in the energy
industry, government, industry groups, consumer bodies, environmental groups and
those with an interest in the energy industry and network planning.
Consumer impact
The TDPNI provides clarity to consumers on:
1) The drivers of electricity transmission investment;
2) The need for action in delivery of key infrastructure projects;
3) The location and activity of network investment; and
4) The estimated cost and timing of project completion.

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