Consulting
Development of an individual, ideal data center concept - secure, efficient and economical
Analysis
An independent picture of the infrastructure as the basis for all decisions
Strategy
With the help of our strategy modules, we support you in aligning your IT and identify and evaluate the most important influencing factors - tailored to all current and future requirements
Project Development
We check the general conditions, keep an eye on norms and standards and develop a concept - including all necessary documents
Energy and Environmental Management
We uncover weak points and potentials in the area of energy consumption and demand, tap subsidies and accompany you through audits and certifications - all the way to the implementation of an energy management system
Documentation and Manuals
Analysis and documentation of the current and target state of your IT infrastructure in the area of documentation management, structures, procedures and processes to reduce corporate and liability risks for management and IT leadership
Certification Support
Whether it is an environmental quality mark, certification as a prerequisite for customer acquisition or a requirement from your insurer - we accompany you through the process right from the start
Engineering
We plan your data center completely from one source - independent of industry, infrastructure, location and new or model construction
Architecture
We plan sustainable architecture for your project
Technical building equipment (TGA)
The correct design and optimization of technical systems contributes to maximum energy efficiency with the professional planning of technical building equipment
Construction
We take care of the realization of data centers and the protection of your IT infrastructures, tailored to your individual needs
General contractor
You have the plan, we carry it out - right through to turnkey handover
General transferee
Everything from a single source - complete and reliable implementation of your project
Data Center Solutions
We offer you modern and sustainable implementation options - whether modular, plug-and-play or CO2-neutral
Data Center Components
We take care of every suitable component in your data center planning - environmentally, budget and resource friendly
We offer high security products for your IT infrastructure
Service
We take care of the maintenance, security and economic optimization of your IT infrastructures
Maintenance
Maintenance of existing and new equipment - reduction of possible malfunctions and failures, maintenance and checking of maintenance and service protocols, possible repair work
Preventive measures
We prevent possible weak points and uncover sources of error so that we can ensure the smooth operation of your data center
Controlling and Monitoring
Round-the-clock monitoring, 24-hour hotline exclusively for contract customers, and service level agreement (SLA)
Operating costs and energy optimization
We analyze your current situation and optimize the set screws of operating and energy costs to ensure the profitability and sustainability of your data center
- Data Center Group
- Company
- Sustainability
- Waste heat utilisation
Waste heat utilisation
Waste heat utilisation or heat recovery is a central component in the engineering and operation of energy-efficient data centers. Waste heat generated by the operation of individual data center components can be captured, processed and passed on to ensure that CO2-free heat can be used to heat local office, commercial or residential buildings or to feed waste heat into a local or district heating network. The requirements for this must be realised, which the Data Center Group is implementing with its experts and with the help of MVV Enamic GmbH.


The Energy Efficiency Act for Data Centers (EnEfG) passed by the German government in 2023 requires mutual notification of load assumptions and consumers. Furthermore, data center operators must demonstrate a fixed proportion of reused energy.
This Energy Reuse Factor (ERF) is calculated from the quotient of the value of the reused energy and the total energy consumption of the data center. A high ERF value indicates that the data center is using energy effectively. A low ERF value indicates that less energy is recovered from the data center for other purposes.
According to the Energy Efficiency Act, the proportion of reused energy (ERF - Energy Reuse Factor) must be at least 10% when the data center is commissioned from
- 1.7. 2026 must be at least 10%,
- 15% from 1.7. 2027 and
- 20% from 1.7.2028.
Further information on the Energy Efficiency Act can be found here:

Waste heat is generated in data centers when the servers are cooled. Recirculating air cooling is usually used, which is heated to around 35 degrees by the waste heat from the servers, for example. The circulating air is then exchanged for water via a circulating air cooling unit. This water with a temperature of around 25 to 27 degrees can then be made available for waste heat recovery. In contrast, with liquid cooling - usually with water - the waste heat is usually removed directly from the processor (CPU) and other relevant components. The waste heat temperature here can oscillate between 55 and 60 degrees.
Instead of transferring the heat directly (air cooling) or via a chiller (liquid cooling) to the environment, it can be connected to a local or district heating network to heat buildings or produce hot water. This usually requires individual solutions.
Further information on the advantages and disadvantages of water cooling can be found in the article:

The waste heat from data centers cannot be used directly in a district heating network. The temperatures are too low for this. A district or local heating network is usually operated with flow temperatures of 70 to 130 degrees. The temperature of the exhaust air (air cooling) or hot water (liquid cooling) must therefore be increased using special, highly efficient heat pumps so that it reaches the level of the heating network and fluctuations in waste heat are balanced out. Liquid cooling offers better technical conditions here, as the heat is already available in liquid form.

We ensure that waste heat can also be used in practice. The DENEFF consortium Bytes2Heat, in which we are a project partner, is developing innovative and forward-looking waste heat solutions.
Further information can be found here:

The Data Center Group is the competent partner for the climate-friendly and efficient use of waste heat in data centers. We apply our extensive expertise to the energy-efficient and economical use of waste heat and implement the technical interface for the transfer of waste heat to a customer.
We support our customers on their way to a sustainable data center and a sustainable heat supply to match.
You can find more information on waste heat utilization in our article:

Sustainability in data centers start with planning

Groundbreaking ceremony for the new climate-neutral data center of regio iT in Aachen
A flagship project for energy efficiency and sustainability

Research project on waste heat utilization "Bytes2Heat" successfully completed
A final report and presentation of the tools developed to support a successful heat transition in the data center sector
Waste heat recovery
We use accruing waste heat to generate heat
Certification
according to the Blue Angel eco-label
Photovoltaics & Facade Justification
Energy recovery and natural heat reduction of the IT protective shell
Research cooperation
We work on the topics of the future
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