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Data centre · South Dublin · 53.3310, -6.3825

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Echelon Crag Avenue, Clondalkin

operating Echelon Our classification · status

120 MWe
Stated maximum demand
planning documents · a ceiling, not use
598 MWth
On-site generation licensed
primary-gas
1.8 ha
Building footprint mapped
2 buildings · OSM
€2.5m
Estimated rates a year
NAV €8.9m
2021
First completion certificate
Grid connection. Flexible. "to commission a fully flexible grid import connection and on-site gas turbine generation facility" (EPA P1113-02: Attachment-1-2-Non Technical Summary_17.pdf, p.3)

Not available for this site: measured grid draw (no EPA annual report: only sites with ≥50 MWth of plant file one).

Why we say it's operating

  • EPA P1113: on-site generators licensed and in use (Licensable Activity Commenced)
  • Valuation list: property 10035536 rated as DATA CENTRE
  • Planning SD20A/0309: completion certificate 2025-06-24
  • Planning SD19A/0185: completion certificate 2021-11-15

What's next on this site

  • permitted: Planning SD20A/0242: unstarted, permission live
  • permitted: Planning SD22A/0093: unstarted, expires within 12 months (expires 2027-08-30)
  • permitted: Planning SD25A/0257W: commenced (no completion certificate on a main building yet)
  • permitted: Planning SD25A/0301W: unstarted, permission live (expires 2031-05-19)
  • permitted: Planning SD20A/0309/EP: unstarted, permission live
  • proposed: Planning SD24A/0201W: appeal pending

Who runs it

  • EPA licensee 'Crag Digital Limited' -> Echelon (operator SPV; high-confidence entity link from CRO, EPA, planning)
  • EPA licensee 'Echelon Clondalkin DC Services Limited' -> Echelon (operator SPV; high-confidence entity link from CRO, EPA)
  • planning applicant
  • planning applicant 'Crag Digital Limited' -> Echelon (operator SPV; high-confidence entity link from CRO, EPA, planning)
  • other names on records here: eir
  • some records attributed by co-location only (no operator in their own source)
Leaflet © OpenStreetMap contributors

Generators and power

EPA licenceStatusRoleMWthPlantPermitted hours
P1113Licensed · Licensable Activity Commencedprimary-gas598.28 combined-cycle gas turbines (5 x 46 + 3 x 42 MWth) + 2 x 46 MWth open-cycle gas turbines + 6 x 5.9 MWth black-start + 21 x 5.4 MWth backup diesel (plus 2 x 0.7 MWth fire pumps)Gas turbines continuously (8,760 h/yr); <=100 h/yr on liquid fuel; backup diesels <=100 h/yr
P1066Withdrawn · primary-gas487.718 x 24.87 MWth gas engines (12 MWe each; 7 running base load) + 35 x 8.25 MWth (3.3 MWe) standby dieselsGas engines continuous base load

What the planning and licence documents say

Figures are for the P1113-02 licence review design (2023-25): on-site gas-turbine energy centre plus 4 ICTF buildings; IT load is from the superseded 2020 P1113-01 design.

SpecValueQuote and source
IT load85 MW"total maximum operational demand of approximately 110MWe and an IT capacity (or critical IT load) of 85MW" EPA P1113-01: Inspector's Report, p.2
2020 P1113-01 design (single 10-hall data centre), superseded by the 4-ICTF design; no IT load stated in P1113-02 docs
Electrical demand120 MWe"the 1,050 GWh from the Energy Centre, an average demand of 120 Mwe" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.33
P1113-02 GHG assessment basis (average demand); 2020 design stated ~110 MWe maximum demand
Import capacity40 MVA"The Energy Centre will supplement the existing ESB Networks 40 MVA grid connection" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.3
existing ESB Networks grid connection; energy centre supplies the balance
Grid voltage110 kV"In 2021, the 110 kV substation was constructed in the west of the landholding." EPA P1113-02: Inspectors Report - P1113-02.pdf, p.2
Connection pointon-site 110 kV GIS substation (built 2021)"The connection is provided via the 110 kV Gas Insulated Switchgear (GIS) Substation located in the west of the site." EPA P1113-02: Attachment-1-2-Non Technical Summary_17.pdf, p.6
Connection termsflexible"to commission a fully flexible grid import connection and on-site gas turbine generation facility" EPA P1113-02: Attachment-1-2-Non Technical Summary_17.pdf, p.3
2020 design: firm for ~40 MW IT, remainder flexible (P1113-01 IR p2); site holds 30 MW DSU capacity contract
On-site generationgas turbines (CCGT/OCGT) for primary on-site power + backup diesel/HVO generators"Any 6 no. of the 8 no. CCGT will operate in normal operation, combusting natural gas in 'combined cycle mode' for 8,760 hours annually." EPA P1113-02: Inspectors Report - P1113-02.pdf, p.3
plus 6 black-start diesels and 21 x 5.4 MWth ICTF back-up generators
Generating units37 units (derived)"18 no. 5.4 MWth back-up generators associated with ICTF1" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.3
derived from p.3 list: 5+3+2 gas turbines + 6 black-start + 18+3 ICTF back-up generators = 37 (excl. 2 fire pumps)
On-site output120 MWe"a maximum of 7 of the 10 Gas Turbine(s) will operate to supply power (120-megawatt electrical output (MWe) to the Installation" EPA P1113-02: Attachment-1-2-Non Technical Summary_17.pdf, p.2
gas turbines only
On-site thermal input598.2 MWth (derived)"5 no. 46 Megawatt Thermal Input (MWth) Combined Cycle Gas Turbines" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.3
derived: 5x46+3x42+2x46 (GTs 448) + 6x5.9 black-start + 21x5.4 back-up + 2x0.7 fire pumps = 598.2 MWth (all listed on same page)
Fuelnatural gas; diesel/HVO alternative and for back-up generators"The primary fuel source for the EC is natural gas, with diesel or hydrotreated vegetable oil (HVO) used as an alternative fuel source." EPA P1113-02: Inspectors Report - P1113-02.pdf, p.2
Running hours6 of 8 CCGTs 8,760 h/yr; back-up generators <=100 h/yr excl. testing"The RD limits the operation of the 21 no. back-up generators (A3-1 - A3-18 and A3-21 - A3-23) to 100 hours per year" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.14
CCGTs licensed for continuous (8,760 h) operation in combined cycle; black-start <=24 h/yr
Coolinghybrid dry/adiabatic (ICTF1-3); closed-loop (ICTF4)"The cooling system for these buildings operates in two different modes; dry cooling and adiabatic (wet) cooling mode." EPA P1113-02: Inspectors Report - P1113-02.pdf, p.15
Water46.2 m3/day (derived)"Water (Public Supply) 13,856 m3 Other Water (rainwater) 2,998 m3" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.21
derived: (13,856 + 2,998) m3/yr / 365 = 46.2 m3/day annual average
Data halls10 halls"The data centre will consist of a two-storey building with ten large data halls" EPA P1113-01: Inspector's Report, p.3
2020 P1113-01 design, superseded by 4 ICTF buildings
Phasingenergy centre + 4 ICTF buildings, under construction/fit-out"Since 2022, construction of the EC and the 4 no. ICTF has commenced" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.2
Dates30 MW DSU capacity contract from 1 Oct 2024 (10 years)"The Installation is contracted to EirGrid for 30MW of Demand Site Units capacity for 10 years. The first capacity year starts 1st October 2024." EPA P1113-02: Attachment-1-2-Non Technical Summary_17.pdf, p.3
Heat reusefuture district-heating heat exchangers below HRSG stacks (provision only)"supply heat energy for a future low carbon district heating network scheme" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.27
RenewablesRD requires feasibility study on solar, biofuels, storage (Condition 7)"The RD also requires the licensee to carry out a feasibility study of opportunities to increase the use of solar power, sustainable biofuels" EPA P1113-02: Inspectors Report - P1113-02.pdf, p.45

Every value is quoted from the document and page cited; the quote was checked against that page's text. "Derived" means the reader worked it out from stated figures (shown in the quote). Planning and licence figures are design or permitted values, not measured use; values derived from an EPA annual environmental report (AER), mostly water, are reported use for that year. The note under each quote gives the scope and whether a demand figure is a maximum or an average.

Planning history

ReceivedRefWhatDecisionBuilt?
2026-04-27SD20A/0309/EP
Provision of 4 new information and communications technology (ICT) Facility buildings and associated development at the subject site, superseding elements of the extant planning permissions on site (Reg. Ref.: SD18A/0068 and Reg, Ref.: SD19A/0185). The application site is subject to an EPA Industrial Emissions Licence (Ref. No,: P1113-01) relating to the Energy Centre permitted on site, The single storey Energy Centre, gas pressure reduction station, and 110kV Gas Insulated Switchgear (GIS) substation permitted under Reg, Ref.: SD18AI0068 and Reg. Ref.: SD19AI0185 will be constructed as previo
Grant Extension of Duration of Permissionunstarted, permission live
2026-03-12SD25A/0301W
The development comprises the retention of the following amendments to the development permitted under Reg. Ref.: SD20A/0309, as amended by Reg. Ref.: SD22A/0093 and Reg. Ref.: SD23A/0158, which arose during the detailed design / construction stage of the project: Amendments at plant and roof level including the reconfiguration of plant and associated extracts, provision of a roof level package plantroom, provision of 2 no. backup landlord generators, reconfigured gantry associated with the 2 no. back-up landlord generators, and reconfiguration of solar PV panels; The provision of 2 no. pumpro
Grant Permission for Retentionunstarted, permission live
2026-01-27SD25A/0257W
Permission and retention permission is sought for the following development: Permission for an ancillary generator structure with a total height of c. 22m located between ICT Facility 2 and ICT Facility 3 including 13 no. double-stacked back-up generators with flues of c. 25m, fuel storage, transformers, and associated electrical equipment and plant. Permission for 13 no. ancillary generators within a fenced compound, with a total height of c. 8.1m located to the north of ICT Facility 3, including 13 no. back-up generators with flues of c. 25m, fuel storage tanks and fuel pump room building, t
Grant Permission & Grant Retentioncommenced (no completion certificate on a main building yet)
2024-08-21SD24A/0201W
Construction of an ICT facility building, revised internal road network and all associated site works. An EPA-Industrial Emissions Directive (IE) licence will be required to facilitate the operation of the proposed development.
Refuse Permissionappeal pending
2022-06-23SD22A/0093
Amendments to the development permitted under Reg. Ref. SD20A/0309 comprising: alterations to permitted ICT Facility buildings 2 and 3, to include internal reconfiguration of the ICT equipment halls, associated electrical and mechanical plant rooms, loading bays, maintenance and storage space, office administration areas, and reconfiguration of screened plant; alterations to the external facades of permitted ICT Facility buildings 2 and 3 to include modification and reconfiguration of fenestration, louvers, loading bays, and access doors, along with an increase in height of 1.2 metres to main
Grant Permissionunstarted, expires within 12 months
2021-02-24SD20A/0309
Provision of 4 new information and communications technology (ICT) Facility buildings and associated development at the subject site, superseding elements of the extant planning permissions on site (Reg. Ref.: SD18A/0068 and Reg, Ref.: SD19A/0185). The application site is subject to an EPA Industrial Emissions Licence (Ref. No,: P1113-01) relating to the Energy Centre permitted on site, The single storey Energy Centre, gas pressure reduction station, and 110kV Gas Insulated Switchgear (GIS) substation permitted under Reg, Ref.: SD18AI0068 and Reg. Ref.: SD19AI0185 will be constructed as previo
Grant Permissioncompleted (completion certificate)
2020-12-01SD20A/0242
The provision of alternate entrance and access arrangements from Crag Avenue to serve the permitted data storage centre, energy centre and substation development permitted under Reg. Ref. SD18A/0068, as amended by Reg. Ref. SD19A/0185 including the provision of ducted services connections between the permitted substation on site (permitted under Reg. Ref. SD18A/0068 as amended by Reg. Ref. SD19A/0185) and existing services to the south of the Grand Canal. The proposed ducted services connections will exit the permitted substation compound and run southward, crossing beneath the Grand Canal by
Grant Permissionunstarted, permission live
2018-10-23SD18A/0068
Construction of data centre and combined heat and power plant (Energy Centre) with ancillary operations building and associated site works.
Grant Permissionlapsed without commencement notice
2013-12-23SD13A/0271
Demolition of existing logistics centre and associated ancillary buildings; retention of existing mobile phone mast and ancillary plant; the construction of a two storey data centre with a gross floor area of 43,805sq.m.; two storey ancillary office building of 4,308sq.m. gross floor area; associated single storey combined heat and power plant (Energy Centre) with a gross floor area of 5,306sq.m. with ancillary two storey operations building with a gross floor area of 2,322sq.m. and single storey generator building 228sq.m. The Data Centre shall comprise the following uses: offices, computer a
Grant Permission & Grant Retentionlapsed without commencement notice
Appeal 243151 (SD13A/0271) · no decision recorded
Appeal 303517 (SD18A/0068) · withdrawn, 2019-05-03
Appeal 321230 (SD24A/0201W) · no decision recorded

Sources for this page

osm:way/1124890822 · osm:way/1124890821 · epa:P1113 · epa:P1066 · valuation:10035536 · planning:SDCC/SD13A/0271 · planning:SDCC/SD18A/0068 · planning:SDCC/SD20A/0242 · planning:SDCC/SD20A/0309 · planning:SDCC/SD22A/0093 · planning:SDCC/SD24A/0201W · planning:SDCC/SD25A/0257W · planning:SDCC/SD25A/0301W · planning:SDCC/SD20A/0309/EP · planning:SDCC/SD19A/0185 · acp:243151 · acp:303517 · acp:321230

Joined from OpenStreetMap, the planning register, An Coimisiún Pleanála, EPA licences and annual reports, the Tailte Éireann valuation list and Building Control. Data built 2026-10-10.

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