China’s southwestern province of Yunnan has ordered producers of electrolytic aluminium to reduce their power usage this week, the companies told Reuters on Tuesday. Yunnan’s decision is another sign that soaring energy prices are having a strong impact on aluminium production across the globe, although domestic prices have seen limited impact for now. Producers were required to cut power use by about 10% from their normal consumption from Sept. 13 to Sept. 14, officials at two producers said, who declined to be named as they were not allowed to discuss the order publicly. The companies had already cut power consumption by 5% from normal use for Sept. 10 to Sept. 12, following an order issued by the Dali Power Supply Bureau, part of the Yunnan Power Grid. The power curb in the southwestern province came after low rainfall in the region this year reduced […]