Electricity production at the 315 MW Višegrad hydropower plant fell to 44.02 GWh in June 2026. The decline reflects pressure from weaker river flows on hydropower portfolios across Southeast Europe.
June output was 39.5% lower than the 72.73 GWh generated in May. Production in June 2026 remained above the 33.74 GWh recorded in June 2025, corresponding to a year-on-year increase of roughly 30%.
First-half generation and long-term output benchmark
Višegrad generated 627.51 GWh during the first six months of 2026. This total is equivalent to more than 62% of its long-term average annual production of approximately 1,010 GWh. The deterioration in summer hydrology makes the second-half trajectory less certain.
Operator, asset details and role in Bosnia’s power balance
The plant is operated by Hidroelektrane na Drini, a subsidiary of Elektroprivreda Republike Srpske. It produced 781.8 GWh in 2025, compared with 733 GWh in 2024. Its historical record stands at 1,283.05 GWh, achieved in 2010.
The facility was commissioned in 1989. It comprises three 105 MW units on the Drina River. Hydropower provides relatively low-cost energy and flexibility to cover peak demand and support exports.
Regional hydro constraints and electricity flows in early August
Bosnia and Herzegovina remained a net exporter in early August, delivering approximately 245 MW on average to neighbouring systems. A sustained reduction in hydro output would increase the burden on the country’s coal-fired plants. It would also reduce electricity available for sale to Croatia, Montenegro and Serbia.
The June decline aligns with weaker hydrological conditions across Serbia, Romania, Croatia and parts of the western Balkans. Low Danube levels are also affecting hydropower generation and cooling-water availability for nuclear plants. This combination increases the value of reservoir storage and dispatchable generation during evening hours.
Summer operations and water management priorities
The plant’s stronger first-half output offers some support for the annual result. Summer operating conditions are becoming more decisive for performance. The commercial value will increasingly depend on preserving water for high-price periods rather than maximising continuous output during a drought-sensitive market.
