The Montenegrin transmission operator CGES has entered into a financing agreement worth €15 million with the European Bank for Reconstruction and Development. This initiative aims to upgrade a vital electricity corridor, enhancing its transfer capacity to approximately 600 MW and bolstering Montenegro’s role in regional power trading.
This sovereign-guaranteed loan will facilitate the reconstruction of the Montenegrin segment of the Trebinje-Perućica-Podgorica-Vau i Dejes 220 kV corridor, which connects Montenegro more closely with Bosnia and Herzegovina as well as Albania. The upgrade involves enhancing around 100 kilometers of transmission lines using high-temperature low-sag conductors, which allow for significantly increased power flows without the need for constructing an entirely new corridor.
The capacity increase is set to elevate transfer capability from about 300 MW to nearly 600 MW, with project completion anticipated by end-2028. This investment, while modest in size, addresses critical constraints on Montenegro’s expanding renewable energy sector.
The country’s growing pipeline of wind and solar projects requires sufficient grid capacity to manage production effectively. The upgrade aims to alleviate the bottleneck in transfer capacity across this major regional corridor, potentially positioning Montenegro as a key electricity transit hub between the Western Balkans and the European Union.
Montenegro benefits strategically from its undersea electricity interconnector with Italy, and enhanced transmission capacity towards Bosnia and Herzegovina and Albania will facilitate increased power flow during price fluctuations in regional markets. This development could enhance trading opportunities for both CGES and market participants.
The project also aligns with Montenegro’s goals for renewable energy integration, as future generation is expected to incorporate a larger share of wind and solar power. With new renewable sources likely to generate surplus electricity, the upgraded grid will be essential for either domestic consumption or exportation.
A lack of adequate network capacity poses risks of congestion and curtailment for producers, which can complicate project financing. Investors are increasingly evaluating grid availability alongside other factors when considering renewable projects. Therefore, improvements in transmission infrastructure are crucial for ensuring the financial viability of Montenegro’s renewable energy initiatives.
In addition, CGES is preparing decisions regarding several significant connection projects, including the proposed Sinjajevina 1 and Sinjajevina 2 wind projects, which together could add around 403 MW of capacity. If these projects advance to construction, reinforcing the network will become even more critical.
The corridor upgrade represents only part of the solution; Montenegro will also require additional substations, local connections, digital grid systems, balancing capacities, and possibly battery storage solutions to effectively integrate substantial volumes of variable renewable energy generation. While hydropower provides some system flexibility, the scale of planned wind and solar developments may exceed what existing hydropower can balance alone.
The financing structure provided by EBRD is noteworthy as it allows CGES to expedite investment without imposing a heavy burden on its cash flow or necessitating significant budget allocations. Although the sovereign guarantee offers security to lenders, it introduces a contingent liability for the state, making project quality and execution paramount.
The economic benefits will be maximized if the additional 300 MW of transfer capacity is utilized effectively by new generation sources and cross-border trading activities. Conversely, delays in renewable construction could lead to underutilization of part of the upgraded network.
Current trends indicate that generation capacity may outpace transmission investment, given Montenegro’s attractiveness to renewable developers and several projects already possessing environmental or connection approvals. As transmission timelines generally exceed those for solar installations, CGES must proactively invest in anticipation of demand.
This project further integrates Montenegro into European electricity markets. As accession progresses, alignment with EU market-coupling rules is expected to deepen, enhancing participation in regional markets while minimizing periods during which domestic generation is isolated from higher-priced demand.
For consumers, improved interconnections can enhance supply security by broadening import options during outages or low hydrological periods. For producers, they create additional export routes, while traders benefit from increased market liquidity. Consequently, upgrading transmission infrastructure stands out as a critical area within Montenegro’s energy investment strategy.
The €15 million loan represents a small fraction compared to discussions surrounding hundreds of millions earmarked for new power plants and renewable projects. However, doubling a key corridor’s capacity from 300 MW to 600 MW could unlock significantly greater generation investments than the cost incurred for this grid enhancement initiative.
This financing agreement marks a pivotal step towards addressing the challenges faced by Montenegro’s renewable energy sector as it transitions from merely developing generation capabilities to ensuring effective electricity distribution to end users.
