Transmission lines connecting the energy system
NYAB provides comprehensive power transmission line construction services for transmission, regional and distribution network operators within the 110–400 kV voltage range, as well as for industrial and renewable energy projects.
Connecting across distances.
244
90 KM
110-400 kV
ENERGY DEVELOPMENT
Enabling reliable power transmission for a growing energy system.
Power transmission lines are an essential part of society’s electricity infrastructure. They enable the reliable transfer of electricity from generation sources to end users and provide the foundation for the growth of industry, urban development, and renewable energy production. The ongoing energy transition, increasing electricity demand, and new energy investments are further highlighting the importance of developing and strengthening electricity networks.
Power transmission line projects require strong technical expertise, careful planning, and effective project management. A key priority is ensuring that projects are delivered safely, on schedule, and with due consideration for the specific characteristics of the operating environment. Successful project execution reduces risks, improves the reliability of the electricity network, and supports the achievement of the client’s long-term objectives.
NYAB provides comprehensive power transmission line construction services for transmission, regional, and distribution network operators within the 110–400 kV voltage range, as well as for industrial and renewable energy projects.
Comprehensive transmission line expertise.
From overhead lines and underground cables to foundations, logistics and site management, we deliver the capabilities needed to complete complex transmission infrastructure projects.
Overhead transmission lines and underground cable connections
We deliver complete transmission line projects within the 110-400 kV voltage range, including overhead line solutions and 110 kV underground cabling.
Civil works and foundations
Our capabilities include earthworks, access roads, drainage solutions, foundations and other supporting infrastructure required for transmission line projects.
Logistics and site planning
We manage the planning and coordination of long transmission corridors, ensuring efficient material flows, resource allocation and construction sequencing.
Safe project delivery
Safety is integrated into every phase of our projects through systematic HSEQ management, clear responsibilities and continuous risk assessment.
Your partner in transmission line projects.
At NYAB, planning, construction and HSEQ teams work together from the earliest project stages to ensure safe, efficient and predictable delivery. Through structured project management, transparent communication and close stakeholder collaboration, we help reduce risks and deliver reliable transmission infrastructure on schedule.
Our capabilities include:
- Turnkey delivery of 110–400 kV transmission line projects
- Overhead line solutions and 110 kV underground cabling
- Earthworks, drainage and foundation solutions
- Site and logistics planning for long transmission line routes
- Construction and installation in demanding environments
- HSEQ management and safe working practices near live electricity networks
- Commissioning coordination and project close-out services
Proven expertise for critical grid infrastructure.
End-to-end project delivery
We manage transmission line projects from early planning and design coordination through construction, testing and commissioning.
Expertise in demanding environments
Our teams have experience delivering projects across varied terrains and challenging operating environments, including crossings, renewable energy connections and complex infrastructure interfaces.
Strong safety culture
Safety, quality and environmental performance are embedded throughout our delivery model and supported by systematic HSEQ management.
Trusted by key network owners
NYAB delivers transmission line projects for some of the Nordic region’s most demanding network operators and energy companies and is included in Fingrid’s Class A (400 kV) supplier register. Our experience spans critical transmission infrastructure projects across the 110–400 kV voltage range.
Supporting the energy transition.
New renewable energy generation, industrial electrification and expanding transmission networks all depend on reliable grid connections. NYAB’s transmission line business directly supports the integration of renewable energy and the development of a stronger electricity system across the Nordic.
By combining local expertise, long-term customer relationships and the strength of the wider NYAB Group, we help deliver transmission infrastructure that enables future growth.
Transmission line projects.
Our references showcase transmission line projects delivered in support of grid development, industrial growth and the energy transition.
Oxelösund 130 kV transmission line
Construction of transmission infrastructure as part of a major investment in grid capacity and long-term electricity supply.
Brändskogen-Rajavuori 110 kV transmission line
Transmission line project delivered for EPV Alueverkko.
Utajärvi 110 kV underground cable connection
Grid connection linking the Utajärvi solar park to the national transmission network.
Talk to us about your next project.
Tell us where you are in the process, and we will take the next step together, from planning to execution.
Antti Keskinen
Business Line Director
Power Networks, Finland
+358 44 425 2194
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Tapio Marttila
Construction Manager
Power Networks, Finland
+358 40 163 0671
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Daniel Johansson
Business Area Manager
Industry & Energy, Sweden
+46 70 362 24 13
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Leo Wallin
Head of Major projects
Sweden
+46 (0)70 415 26 02
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Questions about NYAB’s transmission line projects.
What types of transmission line projects does NYAB deliver?
We deliver overhead transmission lines and underground cable projects within the 110-400 kV voltage range for transmission operators, distribution networks, industrial customers and renewable energy developments.
Can NYAB manage the entire project?
Yes. Depending on the project scope, we can support planning, project management, civil works, construction, testing and commissioning.
How do you ensure safety during construction?
Safety is integrated into every project through structured HSEQ management, risk assessments, clear procedures and continuous monitoring throughout execution.
Do you have experience with renewable energy connections?
Yes. Our transmission line projects support wind power, solar energy and other renewable energy developments by connecting new generation capacity to the grid.
How do you manage long transmission line routes?
We use detailed logistics planning, phased construction schedules and close stakeholder coordination to maintain efficient and predictable project delivery.
How do transmission line projects support grid reliability?
Transmission lines are a critical part of the electricity network, carrying power from generation sources to where it is needed. By strengthening existing networks and creating new connections, transmission line projects help maintain reliable power supply, support growing electricity demand and enable the integration of renewable energy into the grid. Reliable transmission infrastructure also reduces bottlenecks and improves the resilience of the overall energy system.
Three paths forward.
See what’s taking shape
Explore projects across infrastructure, energy and industry, and see how different capabilities come together in practice.
Connecting more than electricity
Transmission lines connect power generation, transmission and electricity use. Discover the expertise behind grid connections, substations and the infrastructure that keeps the energy system connected.
Complex projects. Shared direction.
Discover how our collaboration model Kraftsamla helps clients, partners and project teams align around shared goals and clear responsibilities.