expanding reach across the nordics
Delivering IT infrastructure and Smart Hands services that support the growth ambitions of our data centre customers across the Nordic region.
data centre focussedtechnically excellent
From building structured cabling backbones to operational white space fit-outs — and through both project-based and contracted smart hands support — our homegrown team of technicians delivers at scale across Norway, Denmark, Finland and Sweden.
As part of the Onnec Group, we combine deep regional knowledge with global expertise, giving our clients the confidence of a consistent, high-quality delivery wherever they operate. With local delivery, global standards, and a sharp focus on quality and consistency, Onnec is your end-to-end infrastructure partner — supporting clients throughout the entire data centre lifecycle.
data centre services & solutions
When you work with us, you get expert technicians and dedicated project management support to deliver connectivity in your data centre.
structured cabling
The build of the IT structured cabling forms the backbone for turning grey space into a fully operational data centre. Onnec delivers expert installation of copper and fibre cabling that supports a wide range of critical systems including EMS, BMS, security, Wi-Fi, and administrative networks. We also deploy servers and network hardware, creating a resilient infrastructure that ensures seamless connectivity and prepares your data centre for live operations.
Tenant fit-outs
The tenant white space phase focuses on delivering fully operational environments built for AI readiness and future-proofing. From containment and cabinets to rack-and-stack, we manage all copper and fibre patching alongside the required passive structured cabling. Our expert Smart Hands engineers operate in both project and live environments, ensuring seamless, high-quality installations with minimal disruption.
smart hands support
Once a data centre is live, Smart Hands services are essential to ensure ongoing performance. Our expert team handles everything from installations, moves, adds, and changes (IMACD) to rack-and-stack operations and cable management, maintaining a tidy and efficient environment. We also support audit control and asset management, facilitate IT asset recycling, and provide dedicated technical project management—all tailored to keep your infrastructure reliable and future-ready.
ourlocations
Sweden (Main Office): Finlandsgatan 34, 164 74 Kista, Sweden | Tel: +46 (0) 8 770 00 70
Denmark: Cikorievej 58, 5220 Odense, Danmark
Finland: C/o Leinolan Suomi Oy, Malminkaari 23 A. 00700 Helsinki, Finland
Norway: Karenslyst Allé 53, 0279 Oslo, Norway
why customers choose us
Local Expertise, Global Backing
We combine deep regional knowledge with the scale and technical excellence of the Onnec Group—ensuring our clients benefit from both local delivery and global standards.
end-to-end capabilities
From design and build to installation and ongoing Smart Hands support, we cover the full lifecycle of data centre infrastructure projects.
focussed on safety
We prioritise health and safety on every site, with robust processes, experienced teams, and a culture of accountability—ensuring full compliance and zero-compromise working environments.
customised
support
We care deeply about what we do and how we do it. With a thorough understanding of local legislation and compliance, we uphold the highest standards and take a personalised, partnership-driven approach to delivering for our customers.
OUR partnerships
We are proud to have partnered with world-leading technology suppliers for over 30 years. These long-standing relationships give us the flexibility to select the best solutions for every client application—regardless of manufacturer or vendor.
Alongside our supplier partnerships, we are active members of key industry bodies across the region, including Danish Data Center Industry, Swedish Datacenter Industry Association and Norwegian Data Center Industry. These connections keep us closely aligned with evolving standards, innovation, and best practices in the data centre space.
It’s why customers around the world trust Onnec with their most critical infrastructure.
