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Cloud&Heat water-cooling

Water cooling for high performance gaming servers

March 2020
Gallery Cloud&Heat water-cooling 1
Gallery Cloud&Heat water-cooling 1


Deutsche Telekom is running a proof of concept (POC) based on water cooling to build a clean and sustainable digital infrastructure.

Cooling infrastructure in a data center is one of the largest sources of electricity consumption which also drives up costs. To solve this problem and set an example, Deutsche Telekom’s subsidiary PASM (Power and Air Condition Solution Management GmbH is running a proof of concept (POC) based on water cooling to build a clean and sustainable digital infrastructure. This is in cooperation with Cloud&Heat, a start-up that provides energy-efficient, scalable and secure tailored infrastructure solutions. They have developed a cooling system with direct hot water cooling and waste heat recovery. It works as follows: The servers are equipped with a set of water-filled heat sinks, which are located directly at the heat hotspots. When the IT components are cooled, the water in the heat sink is heated to up to 60°C, the heat is transported away in an energy-efficient manner and reused for heating in buildings. This leads to significant savings potential in three areas: 1) the onboard fans, which account for up to 25% of server performance, can be disassembled or operated at lower speeds, 2) hot water direct cooling is more energy-efficient than air cooling, which accounts for 40 % to 60 % of data center power consumption, 3) the waste heat generated does not have to be released unused to the environment. but can be reused, e.g. to heat buildings.

Label Date March 13, 2020
From Germany
Maturity stage Prototype testing in the real world
Looking For Network, New clients, Visibility, Credibility.

The environmental benefits

  • Reduces CO2 emissions of data centres by 41%
  • 78% of the heat dissipated and fed into the hot water circuit of the building for reutilization

The Financial benefits

  • Up to 40% reduction of energy costs

Activity Region

  • /



  • Headquarters
  • Activity

Company Profile

Deutsche Telekom AG

Deutsche Telekom is one of the world's leading integrated telecommunications companies and present in over 50 countries.

View company profile
Headquarters 53113 Bonn, Germany
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Deutsche Telekom AG has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.