APL Data Center and Telehouse join forces to renovate a data center dedicated to artificial intelligence

Published on June 5, 2025 -

APL Data Center, a company specialising in consulting and design-and-build engineering for data centers, and Telehouse, a global leader in highly connected IT hosting solutions, announce their collaboration on an ambitious retrofit project at the TH3 Paris Magny campus (Yvelines). This project marks a key milestone in the integration of innovative solutions to meet the growing needs of artificial intelligence (AI) platforms and high-performance computing environments.

A strategic project for the future of digital infrastructure

As part of its €1 billion investment plan, Telehouse is continuing the development of its TH3 Paris Magny campus with a new 12,000 m² site offering a total electrical capacity of 18 megawatts. The new building at the heart of this project will be equipped with the first direct liquid cooling solution (DLC: Direct Liquid Cooling) integrated into an existing infrastructure.

“ This project is emblematic of our commitment to meeting new technological challenges and the growing needs of our customers, particularly in the field of artificial intelligence. Integrating DLC into an existing building represents a major technical challenge, essential to ensuring optimal performance and increased energy efficiency. ”, explains Sami Slim, CEO France of Telehouse.

Technical challenges met thanks to combined expertise

This retrofit project is being carried out on an existing infrastructure that presents significant structural constraints and limited available space. The floor load required by this new DLC installation is a real constraint on the building’s current structure. APL Data Center, with more than 40 years of expertise in data center engineering, was selected to meet this challenge linked to the original design of the existing building.

“ Integrating a DLC cooling system into an existing building is a major technical challenge. The solution designed by APL enables a significant increase in cooling capacity within a constrained space to meet the requirements of AI-dedicated infrastructures, while improving the installation’s energy efficiency. We are proud to be working with Telehouse on this innovative project. ”, says Robert Bouchard, President of APL Data Center.

An infrastructure designed for innovation and flexibility

The building will be equipped with an optimised cooling loop, with 80% of capacity provided by DLC and 20% by conventional air conditioning (scalable up to 90%/10% depending on customer needs). The 138 m² IT room will be able to accommodate 132 racks, with a density of up to 130 kW per rack.

By ensuring TIER III+ redundancy and optimal energy efficiency through the use of Direct Liquid Cooling (DLC) and free cooling, this infrastructure will meet the most demanding standards, particularly for AI platforms.

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