Data Center engineering and consulting services
Rejlers is a Nordic engineering and consulting company with strong expertise in energy and infrastructure projects as well as complex project entities. In data center projects, we act as a trusted advisor and partner to our customers. We support decision-making by managing technical, financial and regulatory aspects across all project phases.
Why Rejlers?
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Industry
Impressive solutions from pre-planning to implementation
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Buildings
Professional services for the built environment
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Grid
Supporting the energy transition
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Telecom
Telecommunications solutions for the digital society
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Infrastructure
Sustainable infrastructure for the entire lifecycle
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Management consulting
Independent advisory and expert services
A STRATEGIC PARTNER FOR DATA CENTER PROJECTS
Rejlers supports decision-making in data center projects from the earliest stages. Project schedule, cost structure and feasibility are largely determined by technical and regulatory decisions made at the beginning. In particular, power supply feasibility, lifecycle impacts of energy solutions and the efficiency of permitting processes significantly influence project progress.
We combine technical engineering and design, regulatory expertise and project management to support decision-making. This ensures that risks and opportunities are identified early and that project execution can be planned realistically even under tight timelines.
Rejlers covers a broad knowledge spectrum and can offer more or less all the engineering know-how needed to carry out the transformation of a production operation or set up a new facility from scratch.
Mikko Vaahersalo Country Manager, Rejlers Finland
DATA CENTER LIFECYCLE SERVICES
Rejlers acts as an independent technical consultant and project support partner throughout the entire lifecycle from land use planning and early studies to commissioning.
- Technical advisory
- Business case support
- Site requirements
- Utility requirements
- Connection interfaces
- Site surveys
- Concept development
- Procurement consulting
- EHS advisory (Environment, Health & Safety)
- Documentation support
- Land use planning and permits
- Environmental impact assessment (EIA) and environmental reports
- Negotiations with authorities
- Operational environment analyses and environmental permits
- System design
- Procurement support
- Site selection support
- Power supply and energy delivery solutions
- EHS and security
- Data center equipment procurement
- Data center access network design
- Wireless networks
- Architectural, mechanical, and electrical engineering
- Civil engineering and infrastructure
- Systems engineering
- Procurement services
- Design of internal systems and interfaces to power and district heating networks
- Earthing design, hazard voltage studies, and protection studies
- Cybersecurity
- Cold aisle solutions
- Equipment cabinet layout in data halls
- Enclosure and containment design
- Internal cabling design
- Coverage surveys, planning, and permitting
- Marking and commissioning planning
- Project management
- Site supervision
- Safety coordination
- Quality assurance and quality control
- Contract works acceptance
- Verification of network requirements
- System commissioning and performance testing
- Start-up of maintenance phase with contractor
- Data center backbone design and construction
- Cable measurements and quality assurance
- Remote monitoring and AOS360 filming
- Performance reporting and optimisation
- Operations support
- Metering services
- Maintenance management
- Security coordination
- Quality assurance
- Documentation management
- Data room management services
Rejlers engineered the substation and transmission line connection for atNorth’s new data center
Project
The Nordic company atNorth is building an extensive data center complex in Kouvola, Finland. Rejlers has acted as a technical partner in the project, providing engineering for the data center’s substation buildings and the transmission line connection, as well as managing the related permit processes.
Get in touch with us
Want to know more?
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Jussi Likitalo VP Energy & Utilities, Industry division Send email: Jussi Likitalo Call: + 3 5 8 4 0 8 0 1 1 5 9 2 Finland
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Topi Tissari Business Development Director, Buildings division Send email: Topi Tissari Call: + 3 5 8 4 0 7 5 7 9 4 1 7 Finland
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Aki Pesola Director, Energy & Infra, Spring Advisor Send email: Aki Pesola Call: + 3 5 8 5 0 5 4 3 1 3 3 1 Finland
Rejlers is a member of the Finnish Data Center Association (FDCA)
Membership in the FDCA supports our up-to-date understanding of the development, requirements, and best practices of the data center market. Our experts actively monitor market developments and Finland’s role in international data center projects.
What we do
Learn more
About Rejlers
Rejlers is a leading engineering consultancy with operations in Sweden, Finland, Norway and the United Arab Emirates. We are 3,600 experts with cutting-edge expertise in energy, industry, buildings, infrastructure and defence. Rejlers acts as a catalyst for sustainable transformation and we help our clients meet the challenges of the future. The vision “Home of the Learning Minds” guides the entire Group. In 2025, Rejlers had a turnover of 4.7 billion SEK. Its class B share is listed on Mid Cap, Nasdaq Stockholm.