Most AI hardware runs well below capacity for much of its life. Castellan turns that idle time into revenue: we bring contracted compute offtakers to owners of GPU systems, place workloads, and run the commercial layer — so utilisation rises and the hardware pays for itself. The same engine also monetises data-centre capacity, power, and sites.
AI demand is chasing capacity — but idle GPU-hours only become revenue when someone converts them into a contractable product: specified, matched with buyers, billed, and reported. That conversion is what Castellan operates, anchored by a network of contracted compute offtakers.
We work with AI companies and enterprises whose GPU systems sit partly idle, hosting and data-centre operators with unsold capacity, energy companies holding interconnected power, and funds holding compute assets that should be producing contracted cash flow. Hardware hosted with Castellan can be enrolled directly from our hosting facilities.
Tell us what you hold — megawatts, space, or GPUs. We'll assess the asset and come back with a monetization case and a commercial structure.