Stockshots of Austria's hydroelectric power infrastucture. Austria draws more than 60 percent of its electricity output from the renewable energy source, compared to a global average of 16 percent, with more than 3,100 dams spread across its rivers. But the amount of electricity generated through hydropower in the European Union country is down -- from some 45 terawatt hours (TWh) in 2020 to 42 TWh in 2021 -- as water levels are falling. STOCKSHOTS