Castellan designs and builds AI data centres end to end — design, construction and commissioning, engineered for GPU densities. It is the capability behind our own portfolio, and you can contract it for a facility you will own and operate.
We deliver every physical layer of an AI facility between the grid connection and the powered rack — designed, built and commissioned by one team. You set the scope: a powered shell for your own fit-out, or a complete facility ready for IT load.
GPU clusters concentrate power and heat in ways traditional enterprise data centres never had to handle. Rack densities that were once exceptional are now the baseline, and cooling — not floor space — is the binding constraint.
Every Castellan build is specified for that reality from the first drawing, so a campus can host current generations and absorb the next without a rebuild.
Castellan draws on the competencies and experience of its sister company, the Bitkern Group, built over a decade in energy and large-scale infrastructure. Every project gets the same design standards, supplier network and team — whether the facility joins our own Powered Shell & Turnkey portfolio or is handed over to you, completed and commissioned, to own and operate.
From power density and cooling strategy to delivery timeline — we will scope a facility to your workload.