La foresta perde potenza: la siccità riduce notevolmente la produzione di elettricità

The Drava River has lost much of its power due to drought conditions, resulting in significantly lower electricity production. According to reports from Dravske elektrarne Maribor, the river’s flow rates have dropped to below average levels, affecting hydroelectric power generation along the Slovenian stretch of the Drava. The situation is part of a broader trend observed across Europe, with rivers such as the Danube experiencing record-low water levels. This has raised concerns among energy producers and environmental experts alike. The reduced flow of the Drava is primarily attributed to the lack of rainfall throughout the year. Data from an amateur weather station in Gradišnik indicates that from January 1 to July 26, 2026, only 467.6 millimeters of rain were recorded, well below the long-term average. The heaviest downpour occurred on May 27, 2026, with 97.8 millimeters falling in one hour, marking the third strongest rainfall since measurements began. However, these figures contrast sharply with previous years, which saw higher precipitation levels. For instance, in 2025, there was approximately 24% more rain than in 2026, while 2024 had 66% more. These trends highlight a growing pattern of dryness in the region. Hydroelectric plants along the Drava operate based on the principle of run-of-the-river and reservoir-based systems, making them highly dependent on water availability. Dravske elektrarne Maribor explained that the amount of electricity produced is directly tied to the volume of available water. In the first half of 2026, the company managed to produce around 72% of the planned electricity output, indicating a notable decline compared to normal conditions. The impact of low flows is particularly evident in areas where water storage capacity is limited, such as the Ptujsko Lake, which has relatively high accumulation potential. The situation is further complicated by the fact that much of the regulation of the Drava’s flow occurs upstream in Austria. As a result, the water levels in Slovenia are heavily influenced by conditions in Austria, where hydropower operations play a crucial role in managing river discharge. Despite temporary improvements following recent rains, current data does not indicate critical levels of drought. Nevertheless, the ongoing dry spell continues to affect both ecological balance and human activities, including fishing and tourism. In some parts of the river, the effects of low water levels have become severe. At the Ribiska Dom Zgornje Konjišče, the riverbank has turned into stagnant pools emitting foul odors. Local fishermen report that fish are struggling to survive, with some species showing signs of distress. A local leader, Vlado Kapun, noted that fish are surfacing with their backs exposed, indicating poor oxygen levels in the water. In response, authorities have temporarily banned fishing in certain areas and are using fire department assistance to aerate the water in enclosed sections. Similar issues have been reported in other locations, including the Gramoznica near Barn and the Hrastje-Mota area, where over 200 kilograms of fish have died due to deteriorating water quality. Environmental officials from Ars have expressed concern over the declining water levels in the Mura and Sava rivers, which are also experiencing historically low flows. Hydrologist Janez Polajnar explained that the weak snowfall during the winter months in the Austrian Alps has contributed to the reduced water supply in these rivers. He warned that this could lead to serious consequences for hydroelectric power generation, estimating that production might be cut in half during the month of July. Additionally, the situation has led to challenges in irrigation and poses risks to the tourism industry, particularly in regions reliant on the river for recreational activities. As the summer progresses, the outlook for improved conditions remains uncertain. With continued dry spells and rising temperatures, the pressure on water resources is likely to intensify. Authorities continue to monitor the situation closely, but the long-term implications for both the environment and the economy remain unclear.