Montenegro has successfully completed the diversion of the Ćehotina River at the Pljevlja coal mine, which is a significant development for lignite extraction and ensures a stable fuel supply for the nation’s largest thermal power facility. This project alleviates a critical constraint on future mining operations.
The company Rudnik uglja Pljevlja announced that it has obtained the necessary water permit, facilitating ongoing development of the Potrlica open-pit mine and ensuring access to essential coal reserves for EPCG’s Pljevlja thermal power plant.
The construction included approximately 3.2 kilometers of new riverbed, the excavation of over 500,000 cubic meters of material, the installation of more than 15,000 cubic meters of concrete, and the blasting of around 120,000 cubic meters of limestone.
Rudnik uglja executed earthworks valued at around €4 million using its own funding. The externally contracted portion of this project was estimated at approximately €16.2 million, excluding VAT.
The completion of this diversion is commercially significant as it previously limited the expansion of the Potrlica mine and posed risks to coal supply necessary for the thermal plant’s continued operation.
Despite Montenegro’s efforts to diversify its energy sources through wind, solar, and storage solutions, the coal mine and power plant remain vital components of the country’s energy landscape. Recently, Pljevlja contributed about 65% to EPCG’s electricity production over a three-month period, with its output valued at over €51 million.
This reliance on coal supply underscores its importance not just as a mining issue but as a broader system concern. Montenegro’s extensive hydropower resources can generate substantial electricity during wet years; however, production fluctuates significantly with rainfall patterns.
In periods of drought or when maintenance is required for hydropower facilities, Pljevlja helps reduce the volume of electricity EPCG needs to procure from regional markets. Such imports can escalate in cost during times of high wholesale prices or limited cross-border transmission capacity.
The completion of the Ćehotina project mitigates one immediate operational risk while Montenegro continues to seek alternatives to coal-fired generation in the coming years.
Montenegro is aligning itself with European energy and carbon market regulations, which will gradually intensify pressure on coal usage. Therefore, it is crucial for Pljevlja to maintain reliability in energy supply during this transition phase, allowing EPCG to develop alternative generation options and enhance flexibility.
EPCG is actively expanding its renewable energy portfolio, including projects like the Gvozd wind complex and upcoming battery-storage initiatives. Additionally, private developers are progressing with plans for larger renewable energy projects.
However, transitioning away from coal necessitates more than simply matching Pljevlja’s current capacity. The variability in wind and solar production contrasts with the controllable output offered by thermal plants that can be adjusted based on demand.
Thus, Montenegro will require improved energy storage solutions, enhanced transmission networks, and additional balancing resources alongside new renewable generation capabilities.
Timing is critical regarding any reduction in coal output. Prematurely decreasing production from Pljevlja could lead to increased electricity imports and expose consumers and EPCG to fluctuations in regional prices. Conversely, extending operations may result in higher environmental impacts and carbon costs over time.
The mine faces similar challenges as investments aimed at improving access to coal reserves bolster short-term energy security while Montenegro prepares for an economic shift away from coal dependency.
The municipality of Pljevlja is particularly vulnerable due to its heavy reliance on the mine and thermal plant for employment and local economic activity. A transition away from coal could significantly affect jobs and municipal revenues.
Montenegro and various international financial institutions are already devising transition programs focused on cleaner district heating solutions, energy efficiency improvements, and investments in renewable energy sources.
The river diversion effectively provides additional time for this transition by allowing existing energy infrastructure to continue operations while new systems are being developed. For EPCG, this translates into reduced uncertainty regarding fuel supply.
This project highlights a fundamental challenge within Montenegro’s energy transition: maintaining operational reliability from Pljevlja while simultaneously investing in reducing dependence on coal. Completion of the Ćehotina diversion resolves one physical barrier; however, the broader question remains how swiftly Montenegro can establish sufficient renewable generation capacity alongside storage and grid enhancements to alleviate systemic concerns related to coal supply.
