Buk Bijela dam and the Upper Drina cascade
Backed by a state-owned energy company, Buk Bijela has the necessary support and privileges to to be pushed forward in violation of the national legislation and international conventions.

Photo: Katja Jemec
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Key facts
- Capacity: 93 MW
- Part of the so-called Upper Drina hydropower project, along with the 44 MW Foča, 43 MW Paunci, and 44 MW Sutjeska plants.
- In July 2017, a memorandum on construction of the project was signed with China National Aero-Technology International Engineering Corporation (AVIC-ENG).
Key issues
- The project would wreck the key habitat for the Danube Salmon, an endangered fish species
- The issuance of environmental permits was marred with ubiquitous legal violations:
- Illegal prolongation of the permit
- Lack of new public consultation and inadequate previous one
- Lack of new transboundary consultation and inadequate previous one
- Lack of feasibility and economic assessment so far
Background
The river Drina is formed by the confluence of the Montenegrin rivers Tara and Piva at the border with Bosnia-Herzegovina. The 93 MW Buk Bijela hydropower plant is planned within Bosnia-Herzegovina, with its reservoir stretching upstream to the Montenegrin border.
Buk Bijela is being pushed by state-owned company Elektroprivreda Republike Srpske (ERS) and a memorandum on construction of the project was signed with China National Aero-Technology International Engineering Corporation (AVIC-ENG) in July 2017. We understand that Chinese state banks may be considering financing for the project.
A larger version of the Buk Bijela project has been disputed since the 1970s due to its impacts on the protected Tara canyon in Montenegro, which is both a UNESCO World Heritage site and part of the Durmitor National Park.
The newer version, while smaller, also suffers from a number of issues inherent to the location of the planned plant. These issues also apply to Foča, Sutjeska and Paunci.
Drina – the key habitat for the endangered Danube Salmon

The river Drina constitutes the most significant habitat for the endangered Danube Salmon (Hucho hucho) in terms of habitat length. Over the last 100 years Hucho hucho has undergone a massive decline. It is now found only in a few of southeast Europe’s cleanest rivers.
This fish is highly sensitive to low oxygen and moderate levels of pollution and is a good indicator for river health. This means that it cannot flourish in areas with hydropower plants. In fact, the IUCN assesses that the main current threat to the species is the flow regulation from hydropower dams which impact the species, and their prey, habitat and pollution.
Hucho hucho is protected under Annex III of the Bern Convention and Annex II of the European Union Habitats Directive as a species of community interest whose conservation requires the designation of special areas of conservation.
This means that, if the river was in the EU, the stretches of importance for the Danube Salmon, including the upper Drina, would almost certainly be in the Natura 2000 network of protected areas and definitely under the EU Water Framework Directive – which virtually forbids projects that degrade the good ecological status of water bodies.
The environmental impact assessment for Buk bijela confirms the presence of Hucho hucho in the Drina.
It mentions the construction of fish passes and the fact that these have rarely been implemented in the past for economic reasons, but also that it is uncertain whether they are effective for large fish species like the Danube Salmon.
It mentions instead the practice of creating artificial spawning areas. However this seems highly unlikely to be effective for a fish which requires well oxygenated, fast-flowing water and low temperatures.
[There must be] no hydropower development, including micro-hydropower in rivers holding self-sustaining populations of Danube salmon.
Freyhof et al. in the Hucho hucho in the Balkan region report
Illegal environmental permits
In June 2018, the Aarhus Resource Centre from Sarajevo, Bosnia-Herzegovina, submitted complaints to the Banja Luka District Court against the re-issuing of environmental permits for Buk Bijela and Foča hydropower plants respectively.
Lack of feasibility and economic assessment
The upper Drina area has developed small-scale tourism facilities based on rafting and angling which would be heavily impacted by any nearby dams.
In late July it was also revealed by Bosnia-Herzegovina business media that no feasibility study has been carried out for the project yet. It is therefore unclear not only whether it is financially feasible but also what the economic costs and benefits for the local and downstream communities, Bosnia-Herzegovina and Montenegro would be.

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