Frankfurt has become only the second European city to surpass 1 gigawatt of colocation data centre capacity, underscoring how the growth of artificial intelligence and cloud computing is reshaping the continent’s digital infrastructure. New research from CBRE shows that the German financial hub reached 1.02GW of operational capacity in the second quarter of 2025, adding 26MW in just three months and narrowing the gap with London, Europe’s largest market, to 114MW.
The milestone highlights the rapid expansion of data centre capacity needed to meet the surging compute requirements of AI development and deployment. Since 2015 Frankfurt’s supply has grown at a compound annual rate of 20 per cent, a pace unmatched in Europe outside London. Much of this growth has been driven by hyperscale cloud providers and digital service companies, which require dense clusters of high-performance servers for training and running increasingly complex AI models.
AI drives hyperscale investment
Frankfurt’s ascent began in earnest in 2019 when hyperscalers — the large cloud and platform operators that dominate AI infrastructure — accelerated their investment in the region. Their appetite for interconnected, high-capacity facilities reflects the computational intensity of machine learning and generative AI. Training large language models demands vast parallel processing power and low-latency networks, while inference workloads require flexible, always-on capacity.
CBRE notes that interest in Frankfurt remains strong despite mounting challenges in securing grid power, suitable land and regulatory approvals. Providers have responded by developing new facilities beyond the city’s established data centre clusters, with submarkets such as Offenbach absorbing much of the recent expansion. The spread of new submarkets is likely to continue as electricity grid constraints limit growth in the city’s core areas.
Infrastructure strain meets strategic need
The race to build AI-ready infrastructure comes as European cities face increasing pressure on energy supplies and urban planning. High-density data centres consume significant power, and ensuring reliable grid connections has become a critical factor in site selection. Nevertheless, demand shows no sign of abating. Enterprises deploying AI-powered services view proximity to major financial and industrial hubs as a strategic advantage, while cloud providers compete to secure capacity and keep it away from rivals.
Andrew Jay, Head of Data Centre Solutions, Europe at CBRE, highlights that this demand is being driven by the need to deliver digital services and to protect sought-after supply. Dirk Turek, Associate Director of European Data Centre Research, adds that while Frankfurt’s core clusters may see slower growth, new submarkets will emerge to meet the continuing requirement for AI and cloud computing.
Frankfurt’s move past the 1GW threshold signals more than just local success. It reflects a continent-wide shift where AI is redefining the scale and urgency of data infrastructure. As machine learning models grow larger and enterprises seek real-time insight, the capacity of cities like Frankfurt will increasingly determine Europe’s ability to compete in the global AI economy.
