Europe Data Center Colocation Market Size & Share, Growth Insights, Colocation Investment Analysis - 2031

General construction accounted for the largest share of the Europe data center colocation market in 2025, driven by the substantial investment involved in developing and equipping data center facilities across the region. The general construction segment covers a broad range of activities, including building development planning, site preparation, core and shell development, installation and commissioning, and architectural and engineering design services.

It also includes critical security systems such as fire and smoke detection, intruder detection, access control, closed-circuit television (CCTV) surveillance, external vehicle crash barriers, security fencing, and mantraps, as well as data center infrastructure management (DCIM) solutions.

UPS systems accounted for the largest share of electrical infrastructure in 2025, representing approximately 28% of the overall market, driven by the increasing need for reliable and uninterrupted power supply across data center facilities.

The rising demand for colocation services in Europe is encouraging providers to invest in advanced UPS systems to maintain continuous operations and meet stringent uptime requirements. Colocation operators are also increasingly deploying lithium-ion (Li-ion) battery-based UPS systems, owing to their longer operational lifespan, lower maintenance needs, reduced space requirements, and greater sustainability advantages compared with traditional lead-acid battery solutions.

Cooling systems accounted for the largest share of the mechanical infrastructure market in 2025, highlighting their essential role in maintaining optimal operating temperatures and supporting data center performance. Colocation operators are increasingly investing in energy-efficient cooling solutions, such as chilled-water systems, free cooling, adiabatic cooling, indirect evaporative cooling, and closed-loop cooling, to improve energy efficiency and achieve sustainability targets.

This adoption is gaining momentum across key European markets, including the UK, Germany, France, the Netherlands, Ireland, Italy, and the Nordic countries, where major colocation providers are upgrading their cooling infrastructure to accommodate next-generation digital workloads and comply with stringent environmental and energy-efficiency requirements.

Chiller units accounted for the largest share of cooling systems in 2025, underscoring their importance in maintaining efficient thermal management within data centers. Their primary function is to supply chilled water to Computer Room Air Handler (CRAH) units, while they can also operate alongside cooling towers, dry coolers, or condensers to facilitate effective heat removal from the facility.

For example, CyrusOne’s PAR1 facility in Paris uses N+1 free-cooling air-cooled chillers, highlighting the adoption of energy-efficient chiller technologies across European data centers.

Core & Shell Development represented the largest component of general construction in 2025, capturing approximately 43% of the overall market share. This dominance is supported by significant investments in both greenfield and brownfield data center developments across Europe. Colocation operators are expanding existing campuses while developing new facilities to meet the growing requirements of cloud service providers, enterprises, hyperscale companies, and AI-driven workloads.

The increasing deployment of AI-ready infrastructure and high-density computing environments is further driving investments in larger data center campuses, enhanced power infrastructure, and scalable facility designs that can accommodate future capacity expansion and evolving workload requirements.

Tier III represented the largest component of tier standards in 2025, capturing approximately 68% of the overall market share. The strong adoption of Tier III data centers is driven by their higher level of reliability and minimum N+1 redundancy across power and cooling systems, making them well suited for critical workloads that require continuous operations.

The adoption of Tier III standards is also evident across European data center developments. For instance, Uptime Institute awarded Tier III certification to T-Systems International for the design documents of its Biere data center in Biere, Germany.

Retail colocation represents an important segment of the data center colocation market, providing flexible and scalable infrastructure solutions for organizations with relatively smaller IT requirements. These facilities operate on a multi-tenant model, enabling customers to lease data center space in configurations such as quarter racks, half racks, or full racks. Pricing typically depends on power consumption, space requirements, and the supporting infrastructure deployed.

Customers can also choose secured cage deployments that accommodate multiple racks for enhanced security and dedicated space. In general, retail colocation deployments cater to IT capacities of less than 250 kW.

Air-based cooling techniques represented the largest component of cooling techniques in 2025. These techniques include DX-based Computer Room Air Conditioning (CRAC) units, free cooling solutions, air-cooled chiller-based cooling systems, and dry coolers.

The adoption of these cooling solutions is evident across European data centers. For instance, the FRA03 data center campus of maincubes SECURE DATACENTERS in Frankfurt is equipped with air cooling systems featuring cold aisle containment and N+1 redundancy to support reliable and efficient mechanical infrastructure.