Thésée DataCenter: Ready for green achievements

Better performance, more reliability, less energy consumption: A new breed of data centers is coming up. Thésée DataCenter in France is one of them.

A new generation of data centers is here. In response to the demands of artificial intelligence and new technologies, these data centers offer better availability, better technical performance, and better energy efficiency. We take a look at France’s Thésée DataCenter project, which will open in 2021. 

Ready, set, go: officially named the Thésée DataCenter Tier IV, this French data center campus project will open in 2021 on a three-hectare site at Aubergenville, not far from Paris.


And if you’re hearing so much talk about it, that’s because this will be the first such project to incorporate innovative solutions, right from its conception, that will reduce both its environmental footprint and its energy bills – and consequently those of its clients – while still ensuring high reliability. The project is particularly benefiting from support provided by Siemens.


Data centers used to have a bad reputation for their electricity consumption. On average, a 10,000 m² infrastructure uses as much electricity all by itself as a city of 50,000.  But the incoming new generation of data centers are a different affair.

This solution relies on artificial intelligence, machine learning, and predictive algorithms to supplement its human capabilities and to enhance energy efficiency and reliability.
Alberto Carpita, Data Center Energy Efficiency Solutions expert at Siemens Smart Infrastructure

These days everyone’s aware of the explosion of uses from things like 5G, networked equipment, and cloud applications. The global pandemic has further accelerated this trend: In response to lockdowns, companies have shifted towards digitalization and established new ways of working.

Cutting power consumption around 30%

Changes like these necessarily affect power consumption by servers – which need considerable amounts of energy just to run, not to mention for cooling, which all by itself accounts for 30% of a data center’s power needs. So how to reduce the carbon footprint of these energy gluttons? There are two main approaches:

Thésée DataCenter’s design applies this second approach, using the White Space Cooling Optimization solution developed by Siemens. 


Combining proprietary software with temperature sensors, this solution can optimize cooling for the data center’s technology. It’s also a “smart” solution, meaning it can respond autonomously if a unit of equipment fails or temperature conditions change in the server rooms.

Projects are under study for creating virtuous ecosystems in which a data center can use energy generated locally – for instance, photovoltaically – and where the generated heat will help warm housing or buildings like hospitals, or will be used in agriculture.
Yoann Blangis, Market Director, Data Center Solutions France, at Siemens Smart Infrastructure

In this sector, energy performance is measured by one of the indicators most widely used in industry –power usage effectiveness (PUE), defined as the ratio between total energy consumed by the data center and the energy consumed by the computer equipment alone. The closer this ratio comes to 1, the closer the impact of the heat dissipated by the computer equipment approaches zero.


Thésée DataCenter’s figure is estimated at 1.2 – meaning its energy consumption should be a third less than the previous generation of data centers. And its maximum critical availability qualifies it for the highest certification level, Tier IV.

Data centers: New major players in their regions 

As the trend continues toward decentralizing operations and basing the associated structures regionally, the new era’s data centers like Thésée could well become true major players in the regions where they operate. As they contribute to power generation and energy recycling, they will provide jobs and help ensure a better user experience (lower latency, less network congestion, etc.). In France, this development also received support from the French Senate in the considerations on reducing the environmental impact of computerization that it issued in August 2020.

Thésée DataCenter, based in the western Paris area, is a French hosting service provider (from a few bays to an entire building) that is unaffiliated with telecom operators and Cloud providers. Among its shareholders are the IDEC Group and Banque des Territoires, a subsidiary of the Caisse des Dépôts et Consignations. Thésée DataCenter focuses on public and private clients who are especially interested in keeping their data secure and perfectly under their own control. Thésée DataCenter also seeks clients among Cloud computing service providers who especially want high-efficiency, high-availability, high-density infrastructures, accompanied by independence from the big players in the market. Thésée DataCenter pays great attention to its centers’ energy efficiency, and to keeping its carbon footprint small for its clients.


April 22, 2021

Picture credits: Siemens, Thésée DataCenter

Subscribe to our Newsletter

Stay up to date at all times: everything you need to know about electrification, automation, and digitalization.