Summary
- Azur Datacenter plans close to €360m of investment at HRS's 14,100 sq m Champagnier property.
- HRS would remain on the site under lease arrangements while the data centre development proceeds.
- Completion of the transaction remains dependent on planning and environmental approvals, including France's ICPE regime.
Azur Datacenter plans to invest close to €360 million in converting part of Hydrogen Refueling Solutions’ headquarters at Champagnier, near Grenoble, into data centre infrastructure under a proposed sale-and-leaseback arrangement.
The parties have signed a preliminary agreement covering the 14,100 sq m property, with a transaction value of between €22 million and €25 million. HRS is expected to remain on the site under lease arrangements while continuing its industrial activities, leaving the companies to accommodate hydrogen equipment manufacturing and data centre development on the same property.
Azur expects to take control of the real estate by the end of 2026 if the transaction completes. The wider data centre project is subject to a building permit and environmental approvals, including requirements applying to classified industrial installations under France’s ICPE framework.
The planned investment would also create around 100 local jobs, according to the companies. The figure is considerably larger than the underlying property transaction, reflecting the electrical, mechanical, cooling, security, connectivity, and building work required to turn an industrial site into critical digital infrastructure.
Industrial sites are becoming data centre inventory
Champagnier adds another example of developers looking beyond clean-sheet plots and towards existing industrial property where useful infrastructure, buildings, grid connections, or energy systems are already present. The attraction is not that conversion is automatically simple; it is that a brownfield site may begin with assets that would otherwise take years to assemble.
Azur already specialises in high-density computing, including direct liquid cooling and immersion cooling. The company’s existing French infrastructure supports high-performance computing environments, making the proposed site consistent with a strategy focused on denser compute rather than conventional low-density enterprise hosting.
The Champagnier arrangement is unusual because HRS is not simply vacating a redundant factory. The hydrogen equipment company is expected to retain an operational presence, requiring the redevelopment to account for continuing industrial activity as well as the requirements of a data centre.
That creates practical questions around site segregation, electrical infrastructure, fire and safety systems, access, construction phasing, noise, backup generation, cooling plant, and environmental permitting. Each becomes more complicated when another industrial user continues operating within the same wider property.
HRS and Azur have also discussed strategic cooperation around hydrogen-based power systems. That remains a possible future industrial relationship rather than part of the confirmed data centre design, and deployment at data centre scale would still depend on fuel availability, storage requirements, equipment economics, and the ability to demonstrate reliability under emergency operating conditions.
Permitting remains part of the build schedule
The €360 million figure establishes the commercial ambition but does not remove development risk. French data centre projects are increasingly being judged not only on investment and digital capacity but also on power demand, environmental effects, local infrastructure, and the interaction with industrial policy.
Environmental approval under the ICPE system is therefore a material stage rather than an administrative footnote. Data centre projects can bring together fuel storage, generators, batteries, cooling systems, electrical installations, and other equipment that may trigger regulatory controls depending on final design and capacity.
Azur has already been expanding beyond its existing sites as demand for AI and high-performance computing changes rack densities and cooling requirements. Its technical offer includes direct liquid and immersion cooling, with the company advertising high-density infrastructure above 50kVA per rack and a French estate of several megawatts.
The proposed Champagnier investment would move it into a substantially larger development programme. It also puts the company into a wider European pattern in which former power stations, factories, industrial estates, and energy projects are being reassessed for digital infrastructure because they already possess pieces of the power, land, connectivity, or planning equation.
Those advantages still have to survive detailed engineering. Existing electrical connections may require reinforcement, industrial buildings may not suit modern data halls without extensive structural work, and environmental permits can reshape layouts or schedules.
For Champagnier, the next decisive steps are therefore the property completion, planning consent, ICPE approvals, and the technical design that determines how Azur’s data centre and HRS’s continuing operations can coexist. Only after those pieces are secured will the headline €360 million investment translate into deliverable capacity.
