GrantedEnergyDecided 21 October 2025

Former Clyde House, IDA Blanchardstown Business and Technology Park, Snugborough Road, Blanchardstown, Dublin 15

Extension of duration for a data centre development in Blanchardstown.

FW20A/0087/E1 · Fingal County Council · Lodged 1 September 2025

Reference: FW20A/0087/E1
Authority: Fingal County Council
Register status: Decided
Type: Extension Of Duration Of Permission
Received: 1 September 2025

Summary

AI-generated

The project involves an extension of duration for the construction of 3 data hall buildings ranging from 1 to 3 storeys, a 2-storey generator building, fuel tanks, water tanks, and associated infrastructure at the former Clyde House site.

Energydata centreextension of durationindustrial

Storeys: 4

Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.

Official record

Development description

Construction of 3 no. Data hall buildings with ancillary offices, staff areas, front and back of house areas, entrance lobbies, toilets, storage, associated plant throughout, photovoltaic panels and screened plant areas at roof levels. The proposed data hall buildings range from 1-3 storeys including front of house areas at a 4th floor level serving building
The single storey rotunda building will be retained and reconfigured from previously permitted under (reg. Refs. Fw18a/0032 and fw19a/0176) as front of house comprising lobby, offices, meeting rooms, workshops, associated staff areas and toilets. The overall height of the data hall buildings ranges from c. 5.7m to c. 17.6m to roof level and c. 14.4m to c. 24.8m including the roof top plant. The proposed development includes the provision of a 2 storey generator building (c. 1,990sqm) comprising 20 no. Mv generators and generator rooms, loadbank and customer compound with 5 no. Flues c. 19m high; 2 no. Transformers (c. 88sqm each); skip compactor and bin store area (c. 51sqm); fuel pump room (c. 24sqm); 12 no. Above ground fuel tanks (c. 8.4m high) within a fuel compound; 7 no. Water tanks (c. 16m high); water treatment plant room (c. 228sqm); 2 no. Salt saturators (c. 5.7m high); heat recovery plant room (c. 49sqm); sprinkler pump room (c. 32sqm) and 2 no. Sprinkler tanks (c. 13.6m high). The total gross floor area of the data halls, front of house and ancillary structures is c. 25,225sqm. All associated site development works, services provision, drainage works, landscaping, boundary treatment works, access roads/service entrance, loading bays, vehicular/pedestrian access, security gates, car parking, motorcycle parking and bike stores. No works are proposed to the existing telecommunication pylon and overhead lines running diagonally through the site from south west to north east. A proposed 110kv substation located to the south east of this site is subject of a separate strategic infrastructure development application to an bord pleanála under section 182a of the planning and development act 2000 (as amended)

Key dates

Timeline

Application received1 September 2025
Decision due24 October 2025
Decision issued21 October 2025
Permission expiry1 January 2031

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