The Transmission Development Plan Northern Ireland (TDPNI) sets out the transmission projects we are developing or intending to develop for the period of the Plan. It also contains information about the needs and drivers of the projects. The projects are integral to ensuring an adequate transmission network is in place. The TDPNI forms part of SONI’s statutory and licence obligations

Responses received to SONI Draft Transmission Development Plan Northern Ireland 2018-2027 Consultation - January 2019

Update of planned transmission outages across the Northern Ireland network

DS3 System Services Protocol Volume Capped - changes tracked

DS3 Fixed Contracts Legal Agreement - SONI

This report contains a monthly breakdown of the Ancillary Services & Other System Charges for the 2018/2019 tariff year.

Monthly update of all island system constraints

Update of planned transmission outages across the Northern Ireland network.

Update of planned transmission outages across the Northern Ireland network.

2019/20 Proposed Transmission Loss Adjustment Factors (TLAFs) Excel Version