HOW ECLAIRION PAVED THE WAY FOR TOMORROW'S DATA CENTERS
Omnes entered the data center sector in late 2022 with Eclairion, a European pioneer in high-density hosting for intensive computing and AI. This investment is one of the first milestones in Omnes’ strategy to develop sustainable and sovereign digital infrastructure capable of absorbing the explosion of data.

A visionary approach and perfect timing
In 2022, following a first successful coliving investment with Patrice Cavalier, Omnes decided to support him in launching Eclairion.“Patrice had anticipated the need to build data centers capable of meeting companies’ growing needs in high performance computing and machine learning,” explains Gonzague de Trémiolles,
Partner, Sustainable Cities, Omnes.
“Convinced by his market vision and execution capabilities, Omnes invested alongside him to launch the construction of a first asset in Bruyères-le-Châtel. Very quickly, we assembled a top-tier team, notably with the arrival of Arnaud Lépinois, which enabled us to strengthen both technical expertise and commercial
execution.”
An innovative modular architecture
Unlike standardised colocation data centers, Eclairion offers a modular hosting platform co-designed with clients to tailor architectures according to their use cases. This customisation makes it possible to finely adapt cooling systems, optimising energy consumption and performance. Modularity also enables greater flexibility, with resources adjusted as needs evolve, and faster time-to-market.
“This unique architecture allows modules to be built on demand, supporting a progressive ramp-up of capex”
A progressive and controlled investment model
In the data center sector, the ability to align financing with the pace of client contractualisation is decisive. It allows capital to be deployed progressively as commercial traction materialises. This approach requires agility in structuring investment according to the project’s maturity stage: development phases (feasibility, permitting, securing electrical capacity), followed by potential phased construction.
First published in Scope Winter 2025
