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Planning near you · Mayo · Ref 2660480

The Application will replace the previous consented (but unbuilt) BESS facility granted…

SSE Thermal Tawnaghmore Power Station, Tawnaghmore Upper, Killala Co. Mayo

Final grant

Council decision recorded: August 11, 2026

Applicant
SSE Renewables Ireland Ltd
Proposed use
See council description
View council file →Timeline ↓Map & nearbyDocuments & full proposal

The story so far

Application timeline

Recorded milestones for this application. A permission is not evidence that building work has started.

  1. Application received
    Source: NPAD

    NPAD · source SHA-256: 5b73ddf6bd85fa9be3711591e4edf0cfafffafbad24602fee227d773e20fd62f · field: ReceivedDate

  2. Council decisionGranted with conditions
    Source: NPAD

    NPAD · source SHA-256: 5b73ddf6bd85fa9be3711591e4edf0cfafffafbad24602fee227d773e20fd62f · field: DecisionDate

  3. Grant recorded
    Source: NPAD

    NPAD · source SHA-256: 5b73ddf6bd85fa9be3711591e4edf0cfafffafbad24602fee227d773e20fd62f · field: GrantDate

What changed

Updated in the retained record: Source status, Council outcome, Council decision.

Compare the previous and updated values

Source status: NEW APPLICATION → DECISION MADE; Council outcome: not supplied → CONDITIONAL; Council decision: not supplied → 2026-08-11

Legacy batch date (exact collection time unavailable): 22 August 2026. This describes our archive, not an application event date.

Why it matters locally

The proposal concerns SSE Thermal Tawnaghmore Power Station , Tawnaghmore Upper , Killala Co. Mayo. Proposal excerpt: “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 …”

Sources disagree on some fields. The latest reported value is shown; differences require review.

Location & nearby applications

SSE Thermal Tawnaghmore Power Station , Tawnaghmore Upper , Killala Co. Mayo

The marker is the source location, not the site boundary. Open larger map · Map © OpenStreetMap contributors.

Nearby applications

Closest retained records in this county within 5 km, measured between map points. Proximity does not establish a shared site.

Documents & sources

Mayo County Council · Reference 2660480

View council file →
Source records and verification details

Change record: ePlan · legacy batch; original response hash unavailable

Proposal: NPAD · source SHA-256: 5b73ddf6bd85fa9be3711591e4edf0cfafffafbad24602fee227d773e20fd62f

Latest source observation retained: 2026-09-30T08:14:05.435374+00:00. Source dataset date: 2026-09-29.

Full description from the council file
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).
Application details
Reference
2660480
Applicant
SSE Renewables Ireland Ltd
Site address
SSE Thermal Tawnaghmore Power Station, Tawnaghmore Upper, Killala Co. Mayo
Homes in source field
0 (proposal, not completions)
Reported floor area (m²)
0
Application type
PERMISSION
Latest reported outcome
Final grant
Date received
June 19, 2026
Decision due
August 13, 2026
Council decision date
August 11, 2026
Authority
Mayo County Council
All recorded updates to this application

Dates below show when a change was first retained, not when a planning event happened.

  1. 2026-08-22
    • Source status: NEW APPLICATION → DECISION MADE
    • Council outcome: → CONDITIONAL
    • Council decision: → 2026-08-11
Source differences
  • Source status: {"ePlan": "DECISION MADE", "NPAD": "APPLICATION FINALISED"}
  • Proposal description: {"ePlan": "The Application will replace the previous consented (but unbuilt) BESS facility granted under planni...", "NPAD": "The Application will replace the previous consented (but unbuilt) BESS facility granted under planning ref (25/60108).\r\nThe development will consist of the following elements: \r\n•\tBESS facility including battery containers with integrated HVAC (heating, Ventilation, Air Conditioning) units, transformers, inverters, underground cabling, internal access roads, lighting, CCTV and perimeter fencing;\r\n•\tAssociated 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;\r\n•\tHigh voltage electrical yard and Eirgrid 110kV substation building; \r\n•\t264 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;\r\n•\tProposed internal access tracks to BESS facility, including 4 no. new gate entrances\r\n•\tReinforced concrete and retaining walls;\r\n•\tA temporary construction compound and associated temporary infrastructure to facilitate the development;\r\n•\tAssociated landscaping, drainage, decommissioning of existing septic tank and ancillary works. \r\nA 10-year permission is sought in respect of the development.\r\nCertain details of the proposed development are unconfirmed in the planning application, and an opinion on unconfirmed details accompanies the application.\r\nThe Tawnaghmore Power Station has an Environmental Protection Agency (EPA) issued Industrial Emissions (IE) Licence (Reg, No. P0566-02)."}
  • Site address: {"ePlan": "SSE Thermal Tawnaghmore Power Station Tawnaghmore Upper Killala, Co. Mayo", "NPAD": "SSE Thermal Tawnaghmore Power Station , Tawnaghmore Upper , Killala Co. Mayo"}
  • detail_url: {"ePlan": "https://www.eplanning.ie/MayoCC/AppFileRefDetails/2660480/0", "NPAD": "http://www.eplanning.ie/MayoCC/AppFileRefDetails/2660480/0"}

Source: local authorities / National Planning Applications. Contains Irish Public Sector Data licensed under CC BY 4.0 where supplied by NPAD. Linked documents may have separate reuse terms.

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