Energy costs are reshaping how companies think about colocation. Across Europe, power prices have climbed steadily, and for businesses running compute-intensive workloads, the electricity bill for cooling infrastructure often rivals the cost of the hardware itself. Colocation in Finland has emerged as a serious strategic option for technology companies seeking to reduce that burden without compromising performance. The reason comes down to geography, climate, and a cooling infrastructure that simply cannot be replicated in warmer parts of the continent.
This article walks through the economics of data center cooling, explains what a PUE below 1.2 actually means for your operating costs, and outlines the factors worth examining when evaluating sustainable colocation options in the Nordic region.
Why cooling costs define colocation economics in Europe
In most European data centers, cooling accounts for anywhere between 30% and 50% of total energy consumption. Servers generate heat, and that heat must be removed continuously, around the clock, every day of the year. In warmer climates, this requires energy-intensive mechanical refrigeration systems running at full capacity during the summer months, driving up both power usage and carbon emissions.
As a result, cooling efficiency has become one of the most important variables in colocation pricing. When you compare two facilities with similar rack densities and connectivity offerings, the one with superior cooling infrastructure will almost always deliver a lower total cost of ownership. For CTOs and IT architecture teams evaluating long-term infrastructure commitments, understanding how a facility manages heat is not a technical footnote; it directly affects your budget.
What makes Finland’s cooling infrastructure uniquely efficient
Finland’s climate provides a natural advantage that most European countries cannot match. Outdoor temperatures in Helsinki remain low enough for a significant portion of the year that free cooling—drawing on ambient outdoor air or cold-water sources—reduces or eliminates the need for mechanical refrigeration. This is not a marginal benefit; it translates into measurable reductions in the energy consumed per unit of compute work.
Beyond ambient temperature, Helsinki offers something more specific: integration with the city’s district cooling network. This system allows data centers to connect their cooling infrastructure directly to a citywide network, enabling waste heat generated by servers to be recycled into the city’s district heating system. Heat that would otherwise be vented into the atmosphere instead warms residential and commercial properties. This circular approach to energy use reduces both the cost and the environmental footprint of cooling operations in a way that standalone mechanical systems cannot achieve.
Understanding PUE and what 60% savings actually means
What PUE measures
Power Usage Effectiveness, or PUE, is the standard metric for measuring data center energy efficiency. It expresses the ratio of total facility energy consumed to the energy delivered directly to IT equipment. A PUE of 2.0 means that for every watt powering your servers, another watt is consumed by cooling, lighting, and other overhead. A PUE of 1.0 would represent a theoretically perfect facility in which all energy goes directly to compute work.
The global average PUE for data centers sits well above 1.5 in many regions. Older facilities in warmer climates often operate at PUE values of 1.8 or higher. When a facility achieves a PUE below 1.2, the overhead energy cost drops dramatically. The gap between 1.8 and 1.2 represents roughly 60% less energy spent on cooling and facility overhead for every unit of IT work performed.
Translating efficiency into real cost reduction
For a company running a meaningful colocation footprint, this difference compounds quickly. If your IT equipment draws 100 kW of power, a PUE of 1.8 means your total facility draw is 180 kW. At a PUE of 1.2, that same 100 kW of IT load requires only 120 kW in total. Over a year, at European commercial electricity rates, the difference in energy cost is substantial. Multiply that across larger deployments and multi-year contracts, and the financial case for energy-efficient data center colocation becomes straightforward.
Operating on 100% renewable energy, primarily Nordic wind power, adds another dimension to this calculation. For companies with carbon-reduction commitments or ESG reporting requirements, colocation in a facility powered entirely by renewables removes a significant source of Scope 2 emissions from the balance sheet. This is increasingly a boardroom consideration, not just an IT procurement detail.
Key factors in evaluating sustainable colocation in Finland
When assessing sustainable colocation options, PUE is the starting point but not the complete picture. The source of the energy powering the facility matters as much as how efficiently it is used. A low PUE achieved through fossil-fuel-powered mechanical cooling still carries a carbon cost. The combination of low PUE and 100% renewable energy is what enables genuinely climate-neutral operations.
Connectivity infrastructure is the second major evaluation factor. A facility’s value depends on how well it connects your workloads to your users and partners. Look for direct access to Internet Exchange Points, the presence of multiple telecom operators within the facility, and low-latency routes to key European markets. The number of carrier options available within a single facility determines your negotiating leverage and your resilience against single-provider failures.
Security and staffing credentials round out the evaluation. Enterprise-grade colocation requires security-cleared personnel, 24/7 service management, and the ability to perform physical tasks on your equipment remotely through qualified on-site support. These operational factors affect your actual experience of the facility far more than brochure specifications.
How Helsinki colocation supports edge and hybrid strategies
Edge computing strategies depend on proximity. The value of processing data closer to where it is generated—whether for IoT deployments, real-time analytics, or latency-sensitive applications—is realized only when the edge node is genuinely close to end users and connected to the broader network with minimal hops. Helsinki’s geographic position at the intersection of Nordic and European network routes makes it a natural anchor point for edge infrastructure serving Northern Europe.
Direct access to the FICIX Helsinki Internet Exchange Point, combined with connectivity through the C-Lion1 submarine cable via the Cinia network, provides one of the lowest-latency routes between Finland and Central Europe. For companies building hybrid cloud architectures that span on-premises infrastructure, colocation, and public cloud, this connectivity density reduces the latency penalty that typically accompanies distributed deployments. With nearly 30 telecom operators present within the facility, you can establish direct interconnections with carriers, cloud providers, and network partners without backhauling traffic through distant exchange points.
At Digita Data Centers, we bring all of these elements together in a single facility: a PUE currently below 1.2, 100% renewable energy, district cooling integration with the City of Helsinki, direct FICIX access, and a Cinia network connection to Central Europe. If you are evaluating colocation options in Helsinki for an edge strategy or a sustainability-driven infrastructure refresh, schedule your personalized virtual tour and competitive analysis today to see how our infrastructure can improve your network performance and help you meet your sustainability goals.