Kouvola data center built with Finnish expertise – the project company has selected Caverion as its technical construction and installation partner

On 10 December 2025, the project company behind the Kouvola data center initiative, Hyperco Fin HoldCo 1, and Caverion signed an agreement concerning the technical construction and installation of data infrastructure for the Kouvola data center in southeastern Finland. The contract is one of the largest in Assemblin Caverion Group history. The companies have agreed not to publish the value of the contract. 

"Cooperation with Caverion strengthens the domestic content of the project and boosts its employment impact both in the Kouvola region and across Finland. We were convinced of Caverion's capability in the technical construction and installation of data centers. Our shared goal is to complete Kouvola data center on time, to a high standard, and with full attention to safety", says Aleksi Taipale, Co-Founder and CEO at Hyperco.  

Caverion will be responsible for the data center's cooling, ventilation, fire alarm, fire extinguishing and smoke extraction systems, as well as electrical and HVAC installations. In addition, the assignment includes the indoor construction of data center rooms.

"The future of data infrastructure is being built right now, and Finland has a unique opportunity to be at the forefront of development. Finland offers data centers a safe and predictable operating environment, a cool climate and reliable power and connectivity", Taipale says.

"We are very pleased that Hyperco Fin HoldCo 1 Oy has chosen Caverion as its partner to develop a more sustainable data infrastructure in Finland that meets future needs. We are proud that Finnish expertise and Caverion's track record on delivering technologically advanced projects with high quality, secure and safety standards have convinced international investors and developers of large industrial projects and data infrastructure," says Ville Tamminen, CEO of Caverion Finland, EVP.

"Data centers are a rapidly growing segment and an important part of Assemblin Caverion Group's strategy. Our position in the market is strong, and we are happy to support international customers with our solid expertise and wide range of services," Jacob Götzsche, Executive Chairman, Assemblin Caverion Group, adds. 

In addition to the Kouvola data center initiative, Assemblin and Caverion have been a technical partner in several other data center projects in Sweden and Finland, one of which is the recent assignment concerning Nebius data center in Mäntsälä (press release published on 30 April 2025).

The project will begin in the spring of 2026 and is planned to be completed in phases starting from the end of 2026.

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