Montenegro is set to enhance its role in the Western Balkans electricity grid as Crnogorski elektroprenosni sistem (CGES) collaborates with the European Bank for Reconstruction and Development (EBRD) on a €15 million project aimed at upgrading a crucial cross-border transmission line that connects Bosnia and Herzegovina, Montenegro, and Albania.
This financing, structured as a loan from the EBRD, will focus on modernizing a 220 kV transmission corridor, recognized as a vital interconnection route in the region. The project will upgrade the axis of Trebinje – Perućica – Podgorica – Vau i Dejes, creating a backbone for electricity distribution throughout the Western Balkans.
A key component of this upgrade involves replacing existing conductors with high-temperature low-sag (HTLS) conductors, which are designed to enhance transmission efficiency and resilience during peak load periods.
The modernization is anticipated to double the line’s transmission capacity from approximately 300 MW to around 600 MW, significantly improving cross-border electricity flows and system stability.
This initiative aims to address structural fragmentation within the Western Balkans power system, which has been hampered by limited cross-border capacity that constrains trade and renewable energy integration. By reinforcing this corridor, the project will improve interoperability among national grids, facilitating more efficient energy dispatch and reducing congestion risks.
The investment aligns with a broader strategic shift by the EBRD towards prioritizing grid infrastructure alongside generation assets. Transmission limitations have emerged as critical bottlenecks for expanding renewable energy across Southeast Europe, particularly as solar and wind capacities grow in Serbia, Bosnia and Herzegovina, and Albania.
For Montenegro, this project strengthens its position as a transit and balancing hub within the regional electricity market. The country’s existing interconnections and hydropower resources further enhance its capability to manage cross-border energy flows, particularly during seasonal demand fluctuations.
The financing arrangement includes a state guarantee from Montenegro’s Ministry of Finance, emphasizing the significance of this asset and aligning it with national infrastructure priorities.
The implications for Bosnia and Herzegovina are also notable; enhanced transmission capacity will facilitate higher export potential from coal and hydropower plants while bolstering supply security during peak demand or system stress events.
On a regional scale, this project contributes to the long-term goal of integrating Western Balkan electricity markets into the broader European framework. Improved interconnection capacity is essential for market coupling and aligning with EU energy regulations.
While the €15 million investment may appear modest compared to the larger capital expenditures in generation across the region, its impact on system efficiency is expected to be substantial. Upgrades of this nature typically yield significant returns by reducing curtailment, enabling cross-border energy trading, and supporting variable renewable energy integration.
As renewable energy projects continue to expand—especially in solar and wind—the necessity for such grid enhancements is increasingly critical. Without concurrent investments in transmission infrastructure, growth in generation capacity could face significant constraints due to bottlenecks, affecting both economic viability and system reliability.
This CGES–EBRD collaboration marks a step towards a more coordinated approach to infrastructure development in Southeast Europe, where enhancing grid expansion and regional connectivity are seen as fundamental components of the energy transition.
