Replacement of the existing overhead line circuit conductor wires

Proposed development

the replacement (“restringing”) of the existing overhead line circuit conductor wires with a new higher capacity conductor • the strengthening of foundations at 7no. locations • shear block remedial works at 77no. locations • the strengthening of towers (i.e., member replacement) at 34no. locations • the replacement of 5.1km of earthwire • the painting of all structures • the replacement of insulating and ancillary hardware at structures • all associated works within the existing Kellis 220kV substation to accommodate the uprated 220kV OHL including uprating of the Great Island bay in Kellis 220kV substation • the installation of a temporary link between the Great Island – Kellis and Dunstown = Kellis 220kV OHLs to create a temporary circuit, which will include the erection of a temporary four-pole timber structure between the existing Angle Mast 191 on the Great Island- Kellis circuit and the existing Angle Mast 157 on the Dunstown – Kellis circuit • all associated temporary site development works to gain access to the existing structures including vegetation clearance and management, disassembly and reassembly of gate posts/piers and removal and reinstatement of existing fencing, and • other temporary associated and ancillary site development works required for the purpose of the uprate of the existing circuit, including construction compounds, silt traps, silt fences, vegetation clearance and management, stone tracks, ground protection mats, infrastructure crossing support systems (i.e., guard poles) and temporary watercourse crossings. Where required, an aerial catenary stringing system (ACSS) will be used to facilitate stringing operations over major obstacles, e.g., busy national roads, wide rivers, etc. A Natura Impact Statement will be submitted to the Planning Authority with the application. Please see Site Notice for full development description

Planning status

Permission was granted on 6 Jun 2025. The four-week appeal period has passed with no appeal recorded, so the permission is final. Works can start once a commencement notice is lodged; the register gives its end as 8 Jul 2030.

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