Elnos Group has extensive experience in engineering, building, and upgrading AIS (Air-Insulated Substations) — a traditional yet still dominant solution in power transmission networks throughout Europe.
Our teams have delivered AIS projects in ten countries — from Scandinavia to the Western Balkans — covering all voltage levels up to 400 kV. We bring the expertise, equipment, and organisational capacity needed for reliable execution of complex undertakings, including civil works, electromechanical installation, and commissioning.
Key reference projects include:
- Tuna Substation, Sweden – Reconstruction of the 400/220 kV substation
- Güssing Substation, Austria – Construction of a new 110/30/20 kV substation
- Grant Project, Montenegro – Reconstruction of 15 substations (400, 220, and 110 kV)
Combining technical excellence with operational precision, Elnos Group ensures the safe integration of AIS substations into transmission networks — a foundation for reliable power delivery and long-term grid stability.
Featured Projects
New 400 kV Tuna substation construction – a key energy Link for Sweden Sweden
400 kV Himmeta substation construction a key node of Sweden’s NordSyd project Sweden
110/30/20 kV Güssing substation construction – Elnos Group’s first project in Austria Austria
SS in the Călărași steel plant – reliable power supply for industrial facilities in Romania Romania
Infrastructure Stability for the Future
Elnos Group continually contributes to the development of modern power infrastructure through substation projects up to 400 kV. Our work reflects a commitment to quality, innovation, and the security of the transmission system.
Contact us to build sustainable energy solutions for the future.