Data center contractors in Europe
19 contractors in this table build data centers in Europe, and 5 are Irish. Bouygues Construction reports 800 MW+ delivered worldwide↗, Collen 600 MW+ since 2010↗ and Winthrop Technologies 430 MW+ of IT load in flight across seven countries↗.
| Delivery models | Named data center clients | ||||
|---|---|---|---|---|---|
| Bouygues Construction | General contractor | 8001 | Design-build | AirTrunk | 2026-11-11 |
| Equans Data Centers | Design-build specialist | 6401 | Design, Construction, Commissioning | Colt Data Centre Services | 2026-11-11 |
| Collen Construction | Design-build specialist | 6001 | Design-build | — | 2026-11-11 |
| Skanska USA | General contractor | 5001 | CM at risk | Aligned Data Centers, IBM, atNorth, Peak 10 | 2026-11-11 |
| Winthrop Technologies | Design-build specialist | 4301 | Design-build | — | 2026-11-11 |
| Laing O’Rourke | General contractor | 3001 | Design and construction, Offsite manufacture | — | 2026-11-11 |
| Cap Ingelec | Design-build specialist | — | Design-build | Telehouse | 2026-11-11 |
| DPR Construction | General contractor | — | CM at risk, Design-build, Preconstruction | Digital Realty, QTS, Meta, Vantage Data Centers, CoreSite, CyrusOne, Crusoe, DataBank, Interxion | 2026-11-11 |
| Exyte | Design-build specialist | — | Design-build | — | 2026-11-11 |
| Fluor | Engineer-constructor (EPC) | — | EPC, General contracting | TeraWulf | 2026-11-11 |
| Fortis Construction | General contractor | — | CM at risk | — | 2026-11-11 |
| Glencar Construction | General contractor | — | General contracting (Contractor Alliance with ESG) | Pure DC | 2026-11-11 |
| Implenia | General contractor | — | General and total contracting | — | 2026-11-11 |
| John Paul Construction | General contractor | — | Design-build | NTT Global Data Centers | 2026-11-11 |
| John Sisk & Son | General contractor | — | General contracting, CM at risk, Design-build | Vantage Data Centres | 2026-11-11 |
| Mace Construct | General contractor | — | General contracting (cold-shell construction) | Pure DC | 2026-11-11 |
| Mercury Engineering | General contractor | — | General contracting | Digital Realty | 2026-11-11 |
| STO Building Group (Structure Tone) | General contractor | — | CM at risk | — | 2026-11-11 |
| STRABAG | General contractor | — | Design-build | T-Systems International | 2026-11-11 |
Who builds Europe’s data centers
How the data is sourcedIrish contractors lead this list and build well beyond Dublin: Winthrop’s current projects run from Amsterdam and Frankfurt to Sweden, Finland, Warsaw and Italy↗. Mercury handed over Digital Realty’s 76 MW Paris Digital Park in 2025↗, and Sisk works as general contractor, construction manager or design-and-build contractor for clients including Vantage↗.
Continental and US builders
Exyte booked close to €750 million for three Frankfurt-area data centers in 2026↗. Equans Data Centers reports 640 MW+ delivered↗; it is a Bouygues group company, so do not add its total to Bouygues Construction’s. US firms bring their hyperscale programs with them: DPR in Frankfurt and Luleå↗, Fortis in Finland↗ and Fluor in Finland and the Netherlands↗.