Mountkennedy Demesne & Tinnapark Demesne , Co. Wicklow
Data updated 12 Sept 2026 · register lag up to 7 days · sources & freshness
24306 is a planning application for extension of duration at Mountkennedy Demesne & Tinnapark Demesne , Co. Wicklow, received by Wicklow County Council on 8 Jul 2024 and first seen by Planning Register on 11 Sept 2026. The application describes: Section 42(1) on PRR 10/2123 (access road from the south western roundabout of the Ballyronan interchange to the site entrance. The road continues northward for an additional c 0.3km terminating in a cul de sac formed by bollards at its junction with the laneway located at the northern site boundaries (total road length c 1.1km). The proposed road will include a two way cycle track and a footpath and will involve restoration / modification of the existing Demesne wall; closure of the existing left in / left out access to Mountkennedy House (protected structure) off the N.11. Access will be provided to the existing laneway directly from the proposed access road, 10 no identical two storey Data Centre units each measuring c 10,915 sqm gross. The ground floor of each unit comprises plant areas, storage, workshops, reception / lobby, office space, inspection area, breakroom, internal loading areas and circulation space. The first floor of each unit comprises a net technical area, offices, ancillary plant, storage and circulation space. Each Data Centre unit will also have an ancillary service yard that will incorporate a sprinkler tank, a pump house, an MV switchroom, ESB switch rooms, electrical transformers enclosed within a post and wire mesh fence and a fuel storage tank, an auxillary cooling compound located to thee rear of each building and adjacent to the service yard, an enclosed electrical compound located centrally along the southern site boundary providing for a future step down transformer from the existing 220/110kv overhead power line, a primary dry cooling compound in area housing dry cooling units located to the west of the site; 3 no heat exchanger buildings located on site at the south west corner, north west corner and to the south of the site entrance at the eastern boundary, 250 car parking spaces including 40 electric car parking spaces and 20 disabled car parking spaces; a temporary waste water treatment plant and percolation area located centrally within the site; 1 main security hut located at the site entrance and 10 individual security huts located at the entrance to each individual Data Centre unit; landscape berming and additional planting at the site boundaries; all ancillary site developments works. The proposed development comprises or is for the purposes of an activity that may require an Integrated Pollution Prevention Control Licence and has a total gross floor area of 111,228 sqm). The council refused permission on 30 Jul 2024. The five-week observation window closed on 12 Aug 2024. Within 500 m there is 1 other decided application in the last five years.
Proposal
Section 42(1) on PRR 10/2123 (access road from the south western roundabout of the Ballyronan interchange to the site entrance. The road continues northward for an additional c 0.3km terminating in a cul de sac formed by bollards at its junction with the laneway located at the northern site boundaries (total road length c 1.1km). The proposed road will include a two way cycle track and a footpath and will involve restoration / modification of the existing Demesne wall; closure of the existing left in / left out access to Mountkennedy House (protected structure) off the N.11. Access will be provided to the existing laneway directly from the proposed access road, 10 no identical two storey Data Centre units each measuring c 10,915 sqm gross. The ground floor of each unit comprises plant areas, storage, workshops, reception / lobby, office space, inspection area, breakroom, internal loading areas and circulation space. The first floor of each unit comprises a net technical area, offices, ancillary plant, storage and circulation space. Each Data Centre unit will also have an ancillary service yard that will incorporate a sprinkler tank, a pump house, an MV switchroom, ESB switch rooms, electrical transformers enclosed within a post and wire mesh fence and a fuel storage tank, an auxillary cooling compound located to thee rear of each building and adjacent to the service yard, an enclosed electrical compound located centrally along the southern site boundary providing for a future step down transformer from the existing 220/110kv overhead power line, a primary dry cooling compound in area housing dry cooling units located to the west of the site; 3 no heat exchanger buildings located on site at the south west corner, north west corner and to the south of the site entrance at the eastern boundary, 250 car parking spaces including 40 electric car parking spaces and 20 disabled car parking spaces; a temporary waste water treatment plant and percolation area located centrally within the site; 1 main security hut located at the site entrance and 10 individual security huts located at the entrance to each individual Data Centre unit; landscape berming and additional planting at the site boundaries; all ancillary site developments works. The proposed development comprises or is for the purposes of an activity that may require an Integrated Pollution Prevention Control Licence and has a total gross floor area of 111,228 sqm)
- Status
- APPLICATION FINALISED
- Decision
- Refused on 30 Jul 2024
- Site (from polygon)
- 34.08 ha
- Location precision
- site (coords_polygon)
Timeline
- 8 Jul 2024New applicationObservation window closed 12 Aug 2024
- 30 Jul 2024DecisionAppeal window closed 27 Aug 2024
Full planning report for 53.10700, -6.11221
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1 Where this is — preview
1 Deadlines still open
Appeal
Not appealed.
Commencement
No commencement notice matched to this reference.
Zoning at the site
No zoning objective covers this site in the current plan.
Designations within 250 m
No OPW flood extent nearby.
- Radon risk area · 1
Provenance
Register row from the national planning applications feed (NPAD), fetched 11 Sept 2026, 18:51 (store id 163097). Deadlines were computed by the store from the received / decided dates under the Planning and Development Act 2000 and are recorded as events, not recomputed here. Council register: http://www.eplanning.ie/WicklowCC/AppFileRefDetails/24306/0.
Source: npad · fetched 11 Sept 2026, 18:51
| Source | Licence | Fetched | Link |
|---|---|---|---|
| npad | CC-BY-4.0 | 11 Sept 2026, 18:51 | open |