Introduction: Data Centers as the Engine of Digital Transformation
The digitalization of business and society is progressing rapidly. At the same time, the importance of high-performance data centers is continuously growing.
The current German Datacenter Outlook 2025/26 by the German Datacenter Association (GDA) illustrates how the market is developing in Germany and Europe. The study also shows what challenges operators must face and what political and technological directions are necessary. This brings a future-proof, resilient, and sustainable digital infrastructure into focus.
Datacenter Outlook Germany: Leading Data Center Location in Europe
With over 1.3 GW of installed IT capacity, Germany is Europe’s largest data center market. The Rhine-Main region, with Frankfurt as its core location, is developing particularly dynamically.
Frankfurt already reaches an IT load of 1,020 MW. At the same time, the projected growth rate (CAGR 2026/2027) is 18.6 percent, while the vacancy rate is only 4.8 percent.
Berlin also shows strong growth. The IT load there is currently 152 MW, while the projected growth rate reaches 25.5 percent CAGR.
These figures demonstrate that the demand for scalable data center capacities remains unbroken. Above all, wholesale colocation offerings and customized hyperscale solutions act as central growth drivers. Meanwhile, retail colocation continues to ensure stable basic demand. Overall, however, large-scale projects are increasingly shaping the market.
Data Center Infrastructure Under Pressure: Grid Expansion as a Critical Bottleneck
Despite strong market growth, the industry faces a central infrastructural challenge. Access to power grids remains the decisive bottleneck.
Especially in core markets like Frankfurt and Berlin, the situation is tense. In Berlin alone, grid inquiries from data centers amount to approximately 2.8 GW. In contrast, the actually available grid capacity is significantly lower.
In addition, new power connections have long lead times. According to the study, these can be up to seven years. Consequently, grid expansion acts as a significant impediment to further growth.
Efficiency and Capacity Management in Data Centers
An additional problem arises from oversized connection requests, leading to so-called “ghost capacity.”
CBRE identifies a realistic upper limit of 3.8 kVA/m² for power and space allocation in the report. This also applies to AI training clusters. Anything beyond this leads to inefficient resource utilization and blocks urgently needed grid capacities.
Datacenter Outlook & AI: How Artificial Intelligence is Changing Data Centers
Artificial intelligence acts as a central accelerator for computing power demand. At the same time, it fundamentally changes the requirements for infrastructure, design, and energy supply.
AI Data Centers: New Requirements for Energy, Cooling, and Design
The report highlights several developments:
By 2030, data centers worldwide could account for up to nine percent of global electricity consumption. Approximately two-thirds of this will be attributable to AI applications.
Furthermore, AI workloads are high-performance intensive, volatile, and particularly latency-sensitive. Therefore, classic data center architectures are increasingly reaching their limits.
In response, modular data centers with local power generation are gaining importance. An example is the collaboration between CyrusOne and E.ON, which is creating a system with an additional 61 MW of power. At the same time, waste heat is used for cooling via absorption chillers. This project sends a strong signal to the industry.
Data Center Locations in Transition: Secondary Markets Gain Importance
In addition to established core regions, secondary markets are increasingly coming into focus. Nevertheless, Germany remains Europe’s leading data center location with over 1.3 GW of installed IT capacity.
Frankfurt continues to assert its key role in the European market. At the same time, Berlin records the strongest relative growth. Overall, this shows an increasing diversification of the location landscape.
Sustainable Data Centers: Energy Efficiency as a Guiding Principle of the Datacenter Outlook
A central theme of the study is the contribution of data centers to the energy transition. The GDA relies on several concrete measures:
- Waste heat utilization, for example in projects by NTT in Frankfurt and Berlin
- Direct liquid cooling, such as at Rittal and the GSI Helmholtz Centre
- Battery storage, UPS systems, and emergency power generators to increase grid resilience and flexibility
Furthermore, data centers in Germany must cover their electricity consumption entirely from renewable energies starting in 2027. According to the study, this obligation is currently unique to the industry.
Datacenter Outlook & Politics: GDA's Strategic Role for Digital Sovereignty
The GDA is increasingly establishing itself as a political actor at federal, state, and EU levels. The inclusion of data centers in the coalition agreement underscores their growing importance.
Moreover, the planned dialogue with the EU Commission shows that data centers are now recognized as system-relevant infrastructure.
Conclusion of the Datacenter Outlook 2025/26: Growth, Change, and Responsibility
The German Datacenter Outlook 2025/26 paints a clear overall picture.
- The demand for computing power is increasing exponentially. Digitalization, cloud services, and artificial intelligence act as central drivers.
- At the same time, grid expansion remains the decisive bottleneck for further growth.
- Therefore, modularity, energy efficiency, and close integration with the energy system are considered central solutions.
To secure Germany’s leading role as a data center location in the long term, politics, business, and operators must work more closely together.
Download Datacenter Outlook 2025/26
Laden Sie den Datacenter Outlook 2025/26 der GDA jetzt herunter:
Den vollständigen deutschsprachigen Report kann man hier herunterladen: Datacenter Outlook Germany 2025/26
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