After a dry spell, China’s aluminum production is on the rise again. According to Bloomberg, this is due to heavy rainfall, which has refilled the reservoirs behind the country’s hydropower plants. In May, hydroelectric power generation was 38.6 percent higher than in the same month last year. Large parts of the energy-intensive industry run on hydropower, and in recent years droughts have lowered the levels of the reservoirs and thus affected the power supply to the aluminum plants. According to official data, aluminum production reached an all-time peak of 3.65 million tons in May and was 7.2 percent higher than in the same month last year.