Caverion to implement Halsua and Ullava substations for Fingrid in Finland – supporting electricity self-sufficiency
Caverion Press release 13 May 2025 at 09:00 CET
Caverion to implement Halsua and Ullava substations for Fingrid in Finland – supporting electricity self-sufficiency
Finland's transmission system operator Fingrid Oyj and Caverion have signed a major contract for the construction of Halsua and Ullava 400 kV substations. The contract is a turn-key delivery of both substations including extensive earth- and construction works, main equipment delivery, installation and commissioning activities.

“At Caverion, we are involved in all stages of the energy chain – from ensuring production, to energy transmission and consumption. Renewable energy projects, such as the ones we have worked in close partnership with Fingrid, play a major role in our service offering. We are happy to count on Fingrid’s continued trust and we are excited to be part of building a climate-friendly and energy-self-sufficient Finland,” says Kari Aalto, Head of Business, Industrial Projects and Infrastructure, Caverion Finland.
The project will be implemented during 2025-2027, and the substations will be taken into use in summer 2027.
The project aims to improve electricity transmission capacity in Finland and enable the construction of wind and solar power, which will contribute to achieving Finland’s climate goals and maintaining adequate electricity self-sufficiency in Finland.
For more information, please contact:
Seppo Hietaoja, Head of Unit, Industrial Projects and Infrastructure, Substations, Caverion Finland, tel. +358 50 533 6783, seppo.hietaoja@caverion.com
About Caverion
Caverion is an expert for smart and sustainable built environments, enabling performance and people’s well-being. Customers can trust our expertise during the entire life cycle of their buildings, infrastructure or industrial sites and processes: from installation and maintenance of base and smart technologies, to managed services as well as advisory and engineering services and digital solutions.
In April 2024, Assemblin and Caverion combined to create a leading northern European technical service and installation company, Assemblin Caverion Group. Together, we are about 21,000 skilled professionals in nine countries, sharing the passion for smart and sustainable solutions. Our combined revenue amounts to SEK 42 billion (EUR 3.7 billion).
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