Controversial plans to build a data centre in Cardiff will now be decided by the Welsh government rather than the city's council.
The developer, Curtis Hall, wants to build a 30,292 square-metre facility on the site of a park and ride near Llanrumney, in the capital's eastern suburbs. It is also seeking permission for gas turbines that could temporarily power the site.
What "calling in" means
Officials said "substantial controversy" meant the application should be determined by the Welsh government rather than locally.
The decision was taken by Welsh Planning Minister Sian Gwenllian on the evening before a meeting at which councillors had been due to discuss the scheme.
That timing is the story. Calling an application in is a routine power, but exercising it the night before the council was going to vote removes the decision from elected local members at the last possible moment. Whatever the merits of the scheme, the process question will follow it.
What happens next
A planning inspector will now examine the application before the planning minister makes the final decision. A public inquiry is one of the options available to the inspector.
No timescale for a decision has been published. Curtis Hall said it is committed to engaging with ministers on the scheme.
The gas turbines are the part to watch
Of everything in the application, the request for gas turbines to "temporarily" power the site deserves the most scrutiny.
Data centres need firm, continuous power, and grid connections are the slowest part of building one — often years. On-site generation is how developers bridge that wait. The difficulty is that "temporary" is defined by when a grid connection arrives, which is not in the developer's control and rarely in the published timetable.
A facility of roughly 30,000 square metres running on gas turbines is a meaningful local emissions source, and the planning condition that limits how long that may continue is the single most consequential line in the whole application.
Why this reads differently from the usual objection
Most data-centre disputes are residents against a developer, with the council in the middle. This one is a government overruling the venue of the decision itself, which is a different kind of event and sets a precedent for every subsequent Welsh application.
For Bangladesh, where data-centre investment is being actively courted, the transferable question is not whether to approve such schemes but who decides, and on what record. A national government taking the decision can move faster and weigh national energy policy properly. It also moves the decision further from the people who will live beside the turbines — and that trade-off is worth settling before the applications arrive, not during.
The site itself tells you something
The proposed location is a park and ride — land already cleared, already served by road, already in public-facing use. That is exactly the kind of site data-centre developers look for, because it avoids the delays that come with greenfield land, and it is also why these applications so often land in places residents already think of as theirs. A park and ride is not a beloved landscape, but it is infrastructure built for the public, and converting it transfers something from shared use into private capacity.
