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In the data center business, few things speak louder than a tenant who commits to an entire campus before the concrete has fully cured. When a US hyperscaler takes down a whole European site still under construction, it is not really a property transaction — it is a verdict on location, on secured power, and on the increasingly rare ability to actually deliver capacity. That verdict has now been handed down at Leixlip, on the western edge of Dublin.
Fully let, ahead of delivery
The site in question is the Kildare Innovation Campus, where AiOnX — the data center platform of Amsterdam-listed SWI Group — is building its first operational hyperscale campus. According to DataCenterDynamics, the full 179 MW of the site has been leased to a major US hyperscaler, with an initial 16 MW phase scheduled to begin generating rent toward the end of 2026.
The company itself is saying little and declined to name its tenant. But the documentary trail is hard to ignore. Filings lodged with Ireland’s Environmental Protection Agency in connection with the DUB159 site reference Amazon Data Centres Ireland Limited and Amazon Data Services Limited. Those filings describe a 20-year initial term, projected rent commencement on 8 August 2026, and two five-year extension options. SWI has not confirmed the identity, but in the data center world, EPA paperwork tends to be more candid than press offices.
From an old HP plant to a compute node
The location carries its own story. For years, Leixlip was an HP address, home to ink-cartridge manufacturing until the company flagged the plant’s closure in 2017. The site was subsequently acquired and, by 2021, had passed to Stoneweg — now part of SWI Group — which began steering it toward digital infrastructure.
That conversion was anything but trivial. Turning a legacy industrial plot into a hyperscale campus requires three things that rarely sit in the same place: developable land, secured grid capacity, and a permitting timeline that lines up with what large cloud customers need. In Ireland, where grid constraints have become the defining bottleneck for data center growth, holding all three at once gives a site strategic value well beyond that of an ordinary brownfield.
The 2019 call
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