Why Ireland Leads Europe's Data Centre Industry — ELV & ICT Design Implications

Ireland is Europe's data centre capital. By the end of 2025, data centres in Ireland will account for approximately 20% of the country's total electricity consumption — a figure that reflects a concentration of digital infrastructure investment that is unmatched anywhere in the EU. For ELV and ICT design consultants, this is not background context. It is the primary driver of the most complex, highest-value design work in Irish construction, and understanding why Ireland has become Europe's data centre hub is essential context for anyone designing into this sector.

This guide examines the structural reasons for Ireland's dominance in European data centre investment, the impact of AI compute demands, the Dublin planning moratorium and its implications for Cork and regional expansion, and what all of this means practically for ELV, ICT and security design in Irish data centres.

Ireland's Data Centre Market — Scale and Significance

Ireland currently hosts more than 80 operational data centres, with a further 30+ in planning or under construction. The facilities range from colocation data centres operated by Equinix, CyrusOne (Compass), Flexential and NTT to hyperscale build-to-suit facilities for Meta, Microsoft, Google, Amazon and Apple. Dublin — primarily the D15, D24 and Docklands corridors — hosts the majority of existing capacity, with Cork emerging as the fastest-growing secondary market.

Why Hyperscalers Choose Ireland — Tax, Talent and Connectivity

The factors that attracted hyperscale investment to Ireland are well understood: a 12.5% corporate tax rate (supported by EU state aid rulings), a cool Atlantic climate that reduces the energy cost of cooling (average Irish outdoor temperature of ~10°C provides free-air cooling for significant portions of the year), direct transatlantic fibre connectivity through submarine cables landing at Kilmore Quay and Coonagh, an English-language workforce at scale, and EU membership providing data sovereignty for international companies.

Less discussed is the clustering effect: once the first hyperscalers established in Dublin, the ecosystem of MEP contractors, ELV designers, commissioning specialists and operations teams that supports data centre construction concentrated in Ireland. This creates a self-reinforcing advantage — the talent and supply chain that makes data centre construction efficient in Ireland is now among the deepest in Europe.

Dublin's Planning Moratorium and the Shift to Cork, Galway and the Midlands

Dublin City Council's 2023 data centre development framework — effectively a moratorium on new large-scale data centre development within the M50 ring road — was driven by EirGrid's grid capacity constraints in the Greater Dublin Area. The national grid operator had communicated clearly that it could not connect new large-scale electricity consumers in Dublin without jeopardising supply reliability.

The moratorium has redirected new development toward Cork (where Bord Gáis and Eirgrid have committed to grid reinforcement through 2026), the Athlone/Midlands corridor (IDA Ireland has designated specific industrial zones), and Limerick/Shannon (Enterprise Ireland and IDA are promoting data centre investment in the Shannon Free Zone). For ELV consultants, this means the geographic centre of Irish data centre design work is diversifying beyond Dublin for the first time.

AI Compute Demands: How GPU Clusters Are Reshaping Data Centre ELV Design

The arrival of large-scale AI training and inference infrastructure — GPU-dense compute pods running Nvidia H100, H200 and Blackwell architectures — is fundamentally changing data centre ELV design in Ireland. The power density implications alone are significant: where a standard server rack operates at 5–10kW, an AI GPU cluster rack operates at 30–80kW, and some hyperscale AI training pods specify 100kW+ per rack.

Power Density Changes — From 5kW to 50kW+ Per Rack

AI power density changes ELV design in several ways. Fire detection systems designed around the thermal signatures of standard IT equipment must be recalibrated for AI GPU heat profiles — which are more intense and more localised than distributed server loads. VESDA/ASD sampling pipe networks must be redesigned for higher airflow volumes. Emergency power and UPS systems must be sized for AI load profiles, which have steeper load ramp rates than server infrastructure.

Liquid Cooling and Its Impact on ELV/ICT Routing

Direct liquid cooling (DLC) and immersion cooling — increasingly standard for AI GPU infrastructure — fundamentally change the physical environment in which ELV and ICT cabling must route. Hot aisle/cold aisle containment becomes secondary to liquid supply and return pipework. Overhead cable management must be redesigned around liquid distribution units (LDUs). Containment clashes between electrical containment and liquid cooling pipework are the single most common design coordination issue on new AI data centre builds in Dublin and Cork in 2025.

ELV Design Challenges Specific to Irish Data Centres

Beyond AI compute impacts, Irish data centre ELV design presents specific technical challenges that are not present in standard commercial building design:

• Grid connection and emergency power — Irish grid constraints mean data centres increasingly rely on long-duration battery energy storage systems (BESS) and on-site generation. ELV designers must coordinate fire detection and suppression for battery rooms, generator enclosures and fuel storage areas.
• EN 50600 vs TIA-942 on Irish projects — Irish data centre projects increasingly specify EN 50600 (the European data centre standard) alongside or in preference to TIA-942, particularly for public-sector adjacent projects and those requiring EU taxonomy alignment for green finance. ELV designers must be conversant with both standards.
• Multi-phase construction and live-site constraints — Dublin and Cork data centres are commonly constructed and expanded in phases while earlier phases remain operational. Fire alarm zone boundaries, access control logic and structured cabling containment must accommodate phased construction without compromising operational security or detection coverage.
• Critical infrastructure designation under the CEC Act — The Critical Infrastructure Act 2024 designates large-scale data centres as critical national infrastructure, creating additional security system and physical access requirements beyond standard EN 50131/EN 50600 baseline.

Physical Security Requirements for Irish Data Centres

Physical security design for Irish data centres combines TIA-942 and EN 50600-2-5 requirements with growing overlay from the Critical Infrastructure Act. The layered security model — perimeter, building, hall, cage, rack — is well established, but AI compute infrastructure adds specific requirements:

• Anti-tamper detection for liquid cooling infrastructure (a target for deliberate interference that could cause rapid equipment failure)
• Enhanced CCTV coverage for AI compute areas (higher value, higher threat profile than standard server infrastructure)
• Per-pod access control with individual audit trail for AI training areas
• Integration of physical security events with the DCIM system (physical access correlated with compute utilisation to detect anomalies)

How ASDV Supports Irish Data Centre Design Projects

ASDV provides specialist data centre design consultancy for Ireland — ELV, ICT and security design for hyperscale, colocation and enterprise data centres in Dublin, Cork and nationwide. Our data centre design scope includes VESDA/ASD fire detection, physical security to TIA-942 and EN 50600, structured cabling backbone design, and BIM-coordinated deliverables for complex multi-phase facilities. See also our physical security consultant Ireland page for the full security design scope.