The Application will replace the previous consented (but unbuilt) BESS facility granted…
SSE Thermal Tawnaghmore Power Station , Tawnaghmore Upper , Killala Co. Mayo
Proposed development
The Application will replace the previous consented (but unbuilt) BESS facility granted under planning ref (25/60108). The development will consist of the following elements: • BESS facility including battery containers with integrated HVAC (heating, Ventilation, Air Conditioning) units, transformers, inverters, underground cabling, internal access roads, lighting, CCTV and perimeter fencing; • Associated Electrical Compound consisting of a Low Voltage Operations Independent Power Producer (IPP) Compound including a single storey control and operations building, switchgear room, storage container, car parking, welfare/office facilities; • High voltage electrical yard and Eirgrid 110kV substation building; • 264 meters long 110kV single circuit underground grid connection (UGC) within SSE lands and 119 meters within the existing ESB 110kV Substation lands to facilitate the grid connection to the existing adjacent Tawnaghmore substation; • Proposed internal access tracks to BESS facility, including 4 no. new gate entrances • Reinforced concrete and retaining walls; • A temporary construction compound and associated temporary infrastructure to facilitate the development; • Associated landscaping, drainage, decommissioning of existing septic tank and ancillary works. A 10-year permission is sought in respect of the development. Certain details of the proposed development are unconfirmed in the planning application, and an opinion on unconfirmed details accompanies the application. The Tawnaghmore Power Station has an Environmental Protection Agency (EPA) issued Industrial Emissions (IE) Licence (Reg, No. P0566-02).
What happens next
The council recorded a decision on 11 Aug 2026. The official file has the outcome; a third-party appeal is possible within four weeks of the decision.
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Nearby applications
Other applications on the Mayo register close to this address.
- 2560108SSE Thermal Tawnaghmore Generation Station , Tawnaghmore Upper , Kilala Co. MayoGranted
Following elements: • Battery Energy Storage System facility, consisting of battery containers with integrated HVAC (Heating, Ventilation…
- 2460708Mullafarry and Tawnaghmore Upper , Killala , Co. MayoIn Assessment
The construction of a single data centre building located to the north of the site…
- 2360117The townlands of Tawnaghmore Lower and Meelick , Killala , BallinaIn Assessment
The Proposed Development will consist of a Hydrogen Plant and an Energy Centre. The Hydrogen Plant…
- 2360266Old Ashai Plant , Killala Business Park , KillalaGranted
The Proposed Development will consist of a Hydrogen Plant and an Energy Centre. The Hydrogen Plant…
- 2460699Killala Business Park , Tawnaghmore Lower Killala , Co. MayoGranted
Development at this site at Killala Business Park, Tawnaghmore Lower, Killala, Co. Mayo…
About this page: the facts above come from the statutory public planning register kept by Mayo County Council and are refreshed weekly (last updated 2 Sept 2026). Applicant names and contact details are not shown. Status labels are PlanningLeads' plain-language reading of the register status and the "Use" label is classified by AI from the public description (see how we use AI); neither is legal advice and the council's file is the record. How we handle this data: privacy notice.
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