Castellan is a European company developing and operating sovereign-grade AI infrastructure — headquartered in Switzerland, with operations across Europe and the United States. It is built on the operating DNA of the Bitkern Group — an established power & compute infrastructure operator — with access to +5 GW of interconnected power.
AI compute is becoming the most consequential infrastructure of the century — and today it is concentrated in the hands of a few hyperscalers.
That concentration is a strategic exposure — for European governments and institutions, and for every nation that wants AI built under its own jurisdiction. Workloads cannot always travel; data sovereignty is not a slogan.
Castellan exists to build the physical layer for sovereign-compliant AI — a European company, Swiss-domiciled and neutral, operating across Europe and the United States, leased on triple-net terms to the world's most demanding tenants.
And we do not start from zero. Castellan is built on the operating DNA of the Bitkern Group — an established power & compute infrastructure operator — to lay the foundation on which the next decade of sovereign AI runs.
Castellan does not start from zero. It is built on the operating DNA of the Bitkern Group — an established operator of large-scale power & compute infrastructure, with a decade of track record across energy and powered land.
That is the difference. The hardest part of an AI campus is not constructing the building — it is securing abundant, affordable, interconnected power. Castellan brings that capability from day one.
Castellan has access to +5 GW of power, available as demand requires, alongside established energy-supply relationships — a position most newcomers simply cannot reach.
Most AI-infrastructure entrants start from zero on power. Castellan starts with the hardest asset already in hand.
Land secured on long-term tenure, with grid interconnection and access to power — the scarcest input in AI. For operators who want to build on their own terms.
From design to ready-for-rack — electrical, cooling, and construction planned, managed, and delivered end-to-end. We run the project; you own the result.
Land, power, and built infrastructure delivered tenant-ready on a long-tenor triple-net lease. Our core offering — everything in one, fast time-to-power.
Blackwell-class GPU systems, networking fabric, and storage — sourced through established OEM and distribution relationships. Pure GPU trading — from single cards to complete, integrated racks — with allocation access, price discipline, and delivery logistics handled end-to-end.
Bare-metal GPU clusters and reserved capacity blocks under Swiss and European jurisdiction — for training, fine-tuning, and inference. Compute you can contract, without building anything.
Your AI hardware runs below capacity? Castellan brings contracted offtakers and turns idle GPU-hours into revenue — for fleets, data-centre capacity, power, and sites.
Colocation in data centres across Europe and beyond — high-density racks for H100 to GB300 systems, DLC-ready cooling, 24/7 operations and remote hands. Your machines, our uptime — with optional monetization of idle time.
Every country needs to have its own sovereign AI infrastructure.
First site — Phase I is a minimum 50 MW greenfield campus in the USA or EU (site TBD); construction 2027, commissioning 2028 — Castellan's first triple-net, sovereign-aligned campus.
Access to +5 GW of power, power-zone identification, interconnection studies, and multi-year supply relationships built over a decade of energy-intensive operations. Power is secured before a shovel hits the ground.
Electrical topology, transformer planning, cooling system design (air, evaporative, direct-liquid-cooling-ready), structured cabling backbone. Engineered for high-density GPU deployments — H100/H200 and Blackwell-class — to Tier III design standards.
Swiss holding, US operating entity, planned European subsidiary. Tax-aware structure for sovereign tenants. Institutional reporting from day one.
Big-Four audit ready. IFRS reporting. FINMA-aware structure. ISO 27001 / SOC 2 roadmap. EU AI Act compliance framework for sovereign tenants.
Direct OEM and distribution relationships for Blackwell-class GPU systems, networking fabric, and storage. Allocation access, price benchmarking, logistics, and commissioning — procurement as an operating discipline.
A decade of running energy-intensive compute commercially. Workload placement, offtake structuring, and revenue operations that turn megawatts and GPU fleets into contracted cash flow.
Founder of the Bitkern Group and architect of Castellan's sovereign-AI thesis. A decade operating power & compute infrastructure at scale across Switzerland, Austria, and the United States.
Tenant origination and anchor-lease structuring. Commercial strategy for hyperscale, sovereign-cloud, and regulated AI workloads on long-tenor, triple-net terms.
Corporate governance, contract architecture, and multi-jurisdictional compliance across Switzerland, the EU, and the US. Counsel with MLL Legal; structures Castellan's holdings, leases, and investment documentation.
Site delivery and commissioning across the US portfolio. A decade operating multi-megawatt power & compute facilities with the Bitkern Group — from ground-break to ready-for-rack.
Group finance, IFRS readiness, and institutional reporting. Financial discipline for a fast-scaling capital programme, built on the Bitkern Group's operating track record.
AI software and use-case expertise — translating tenant workloads into infrastructure requirements. Leads platform IT, security operations, and automation, built on a decade of large-scale operations at the Bitkern Group.
A note on the structural exposure of regulated workloads to hyperscaler concentration, and what neutral, sovereign-aligned infrastructure looks like.
Power-zone economics, interconnection queues, and why pre-secured power is the real unlock for AI capacity.
Why long-tenor leases and asset-backed debt are the right capital stack for the next decade of compute.
Tell us what you need. Every enquiry reaches our team and is routed to the right person.
Whether you're a prospective tenant, a land or construction partner, or a professional market participant or institution interested in participating in this build-out — we're glad to talk.
Prefer email? contact@castellan-intelligence.com
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