Mountkennedy Demesne & Tinnapark planning refused

What’s proposed

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)

Planning details

Reference: 24306
Local authority: Wicklow County Council
Status: Refused · register status “APPLICATION FINALISED”
Received: 8 Jul 2024
Observations close: 12 Aug 2024 (closed 790 days ago)
Decision due: 1 Sept 2024 · decided 30 Jul 2024
Decision: Refused on 30 Jul 2024
Proposed development: 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)
As published by the register.
Site area: 34.08 ha from the mapped boundary, not the council's figure
Applicant: Not published — the national feed carries no applicant name council register

Nearby 4 · 500 m · 5 years

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Homes nearby

Where this comes from

National planning feed (NPAD), fetched 11 Sept 2026, 18:51.

Source: npad · fetched 11 Sept 2026, 18:51

Source	Licence	Fetched	Link
npad	CC-BY-4.0	11 Sept 2026, 18:51	open

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Mountkennedy Demesne & Tinnapark Demesne, Co. Wicklow

What’s proposed

Planning details

Nearby 4 · 500 m · 5 years

Homes nearby

Zoning

Protections nearby 250 m

Where this comes from

Mountkennedy Demesne & Tinnapark Demesne, Co. Wicklow

What’s proposed

Planning details

Nearby 4 · 500 m · 5 years

Homes nearby

Zoning

Protections nearby 250 m

Where this comes from

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