September generation at 315 MW Višegrad
Electricity generation at Bosnia and Herzegovina’s 315 MW Višegrad hydropower plant declined in September, according to figures from operator Hidroelektrane na Drini, part of power utility ERS. The facility produced 21.49 GWh in September 2026. That compares with 33.35 GWh in August, a drop of 35.6%. Production was also about 25.6% below September 2025, when the plant generated 28.88 GWh.
First-nine-months output and annual comparison
The September decline occurred despite comparatively higher generation during the first nine months of 2026. Cumulative production reached 712.62 GWh, approaching the 781.8 GWh generated over the whole of 2025. In 2025, Višegrad produced more than the 733 GWh recorded in 2024. The plant’s long-term average is stated at approximately 1,010 GWh annually.
Installed capacity versus monthly deliverability
The latest monthly data highlight the gap between installed hydropower capacity and electricity output that can be delivered in a given period. Višegrad was commissioned in 1989 and operates three generating units of 105 MW each. Its highest recorded annual production was 1,283.05 GWh, reported in 2010. For ERS, water availability affects both generation volumes and the amount of electricity available for domestic consumption and potential export.
Implications for system operations and market exposure
If hydroelectric output is lower, ERS may need to increase reliance on other generating facilities or adjust electricity purchasing and sales schedules based on wider system conditions. The commercial impact can increase when regional wholesale prices remain elevated. Electricity produced during high-price periods can carry additional value, while shortfalls may limit the utility’s ability to benefit from favorable market conditions.
The September figures also show how quickly hydropower availability can change within a single operating season. While cumulative production in 2026 provides some support to annual performance, the month-on-month decline at Višegrad illustrates variability in generation across time.
