Substations for a changing grid
NYAB delivers substation projects that strengthen grid capacity, support renewable energy integration and provide the reliable infrastructure needed for electrification and energy demand.
Proven where it matters the most.
400 kV
110-400 kV
80 MVA
Substations play a critical role in the electricity network, enabling the safe transmission, transformation and distribution of power. As electricity demand grows and investments in renewable energy increase, substations are essential for maintaining a reliable, resilient and efficient energy system.
NYAB delivers substation projects across the 110-400 kV voltage range, including new greenfield facilities, brownfield upgrades and extensions of existing substations. By combining strong project management, technical expertise and safe execution, we help customers develop the grid infrastructure needed to support electrification, renewable energy integration and long-term network reliability.
Where reliable power begins.
Before electricity can be transmitted across the network, substations must operate safely and reliably. Equipment must function as intended, protection systems must be tested and every connection must be verified.
Whether building a new greenfield substation, expanding an existing facility or carrying out a brownfield upgrade in an operational environment, we deliver projects with a strong focus on safety, reliability and predictable execution.
Everything needed for a complete substation project.
We deliver turnkey substation projects and support customers through every phase of implementation.
Our expertise includes:
- Civil works and foundations
- Engineering and design coordination
- Electrical installations for AIS and GIS substations
- Protection, control and automation systems
- RTU, SCADA and communication systems
- Testing, commissioning and energisation
- Logistics and site planning in operational environments
- HSEQ management and safe execution at live substations
This enables us to deliver a coordinated solution with one accountable partner throughout the project lifecycle.
Structured delivery from planning to commissioning.
Substation projects are delivered through NYAB’s phased execution model, where engineering, procurement, construction and commissioning progress in close coordination.
In practice, this means:
- Early planning and risk management to identify critical interfaces and project risks
- Clear roles and responsibilities throughout the project organisation
- Integrated engineering and construction teams working towards shared objectives
- Transparent reporting and project controls to support informed decision-making
- Safe execution in operational environments where continuity of supply is critical
- Testing and commissioning processes that ensure systems perform as intended before energisation
For customers, this means controlled project delivery with fewer surprises, improved predictability and reduced risk.
Expertise for critical grid infrastructure.
Turnkey project delivery
We manage projects from planning and procurement through construction, testing and commissioning.
Experience in operational environments
Our teams have extensive experience working safely at active substations where reliability and uninterrupted operations are essential.
Strong HSEQ culture
Safety, quality and environmental performance are integrated into every project through structured HSEQ management and continuous follow-up.
Trusted by network owners
NYAB is included in Fingrid’s Class A (400 kV) supplier register, demonstrating our capability to deliver critical transmission infrastructure projects.
Enabling electrification and renewable energy investments.
Growing electricity demand, industrial electrification and renewable energy investments all require a stronger and more capable grid. Substations play a central role by enabling power transmission, voltage transformation and reliable system operation.
As part of NYAB’s broader power network offering, our substation business supports the development of the infrastructure needed for future energy systems.
Substation projects in practice.
Explore a selection of projects that demonstrate how we deliver complex substation projects, coordinate multiple technical disciplines and stakeholders, and create reliable infrastructure for power transmission and distribution.
Metsämaa 110kV substation
Metsämaan sähköasema is a 110-kilovolt substation being built by Fingrid in Loimaa, Finland, with NYAB Finland acting as the main contractor and Laatuverkko handling the electrical installation works.
Kausala 110kV substation
The 110 kV Kausala substation is a key component of the regional electricity network in Iitti, Finland. The project strengthens security of supply, connects the regional grid to Finland’s national transmission network, and supports the integration of renewable energy generation into the power system.
Karahka 110kV substation
The 110 kV Karahka Substation serves as the grid connection point for the Karahka Wind Farm, enabling the transmission of up to 148 MW of wind power to Finland’s national electricity grid. The project included the construction of the substation, main transformers and a 110 kV transmission line.
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.
Pauli Lahti
Sales Manager
Power Networks, Finland
+358 41 731 0905
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Antti Palovaara
Sales Manager
Power Networks, Finland
+358 40 838 7072
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Antti Keskinen
Business Line Director
Power Networks, Finland
+358 44 425 2194
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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 substation projects.
What types of substation projects does NYAB deliver?
We deliver new-build substations, brownfield upgrades and extensions for projects within the 110-400 kV voltage range.
Can NYAB provide turnkey substation delivery?
Yes. We provide comprehensive delivery covering engineering, procurement, civil works, electrical installation, testing and commissioning.
Do you have experience working at operational substations?
Yes. We regularly work in live substation environments where safety, careful planning and continuity of operations are essential.
What technologies do you work with?
We have experience with both AIS (Air-Insulated Substation) and GIS (Gas-Insulated Substation) solutions, as well as protection, control, RTU and SCADA systems.
How do you ensure project safety?
Safety is integrated into every phase of delivery through structured HSEQ management, risk assessments, clear site procedures and continuous monitoring.
Why are substations important for the energy transition?
Substations are critical for connecting renewable energy generation, supporting electrification and ensuring reliable electricity transmission across the grid.
Three paths forward.
See what’s taking shape
Explore projects across infrastructure, energy and industry, and see how different capabilities come together in practice.
Where the grid comes together
Substations connect power generation, transmission and distribution. Explore the expertise behind substations, transmission lines and grid connections.
Complex projects. Shared direction.
Discover how our collaboration model Kraftsamla helps clients, partners and project teams align around shared goals and clear responsibilities.