Recent rainfall has significantly improved hydrological conditions at the Bileca lake, lifting water levels well above planned benchmarks and strengthening expectations for solid electricity production this year. The reservoir now stands four meters higher than projected, creating favorable conditions for hydropower output.
According to officials from “Hidroelektrane na Trebisnjici” (HET), the year has started on a positive note from a hydrological perspective. Improved inflows have already restored a substantial portion of the reservoir’s capacity, and additional precipitation is anticipated during the spring months. As a result, production targets for the first quarter are expected to be met.
The latest precipitation cycle has had a particularly strong impact, raising the water level of the Bileca lake by approximately 18 meters. The reservoir has reached an elevation of 385 meters above sea level, comfortably exceeding the operational plan and providing a strong buffer for the coming period.
Current inflows into the Bileca reservoir are measured at around 90 cubic meters per second, while the Trebinje accumulation is receiving approximately 15 cubic meters per second. Officials note that the Bileca lake still has sufficient storage capacity to absorb additional inflows expected in the weeks ahead.
For 2026, HET has set an electricity generation target of 1,080 GWh. The improved water balance at the start of the year supports confidence that this goal remains achievable.
Last year, despite an extended drought and unfavorable hydrological conditions, the hydropower operator managed to fulfill its revised production plan. That adjusted target had been reduced by 30% compared to the original national energy balance, underscoring the scale of last year’s challenges and the significance of the current recovery in water levels.