Lithuania has taken another important step toward strengthening its electricity infrastructure and enhancing regional energy security. A newly built 330 kV Mūša substation has been commissioned in the Joniškis district, alongside two new 330 kV transmission lines — Viskali–Mūša and Mūša–Šiauliai — forming a vital electricity transit link with Latvia.
A Strategic Project for Regional Security
This development is part of Lithuania’s broader strategy to prepare for synchronisation with the continental European electricity grid. The new infrastructure will increase inter-system transmission capacity with Latvia, helping to ensure a more stable and secure electricity supply for both countries and for the wider region.
Strengthening Northern Lithuania’s Grid
According to Rokas Masiulis, CEO of Litgrid, the project significantly improves the reliability of the power transmission network in northern Lithuania:
“By building the 330 kV Mūša substation, we have strengthened the electricity transmission network in northern Lithuania. Until now, the existing T-shaped three-line connection was not reliable enough, as their total length reached 182 km. This meant that if a fault occurred in one place, all three lines would be disconnected. The new substation ensures a more reliable electricity supply in northern Lithuania, as the longest section has now been shortened by almost three times.”
Respecting Historical Heritage
The project also reflects careful consideration of Lithuania’s cultural heritage. The previous power line connection in this region was located within a cultural heritage zone, where the historic Battle of Saule took place. Out of respect for the site’s historical significance, the new substation was constructed north of the area, with power lines routed to bypass the protected zone.
A Step Toward Synchronisation
With the commissioning of the Mūša substation and its connecting transmission lines, Lithuania has not only enhanced the reliability of its local network but also taken a crucial step toward the synchronisation of the Baltic electricity systems with continental Europe. This project strengthens cross-border cooperation, improves energy resilience, and reinforces the country’s long-term commitment to a secure and integrated European energy future.
