A Beijing-based NGO filed a lawsuit...against the companies responsible for developing a hydropower station near a nature reserve in southwestern China...Construction of the Huilong Mountain Hydropower Station...commenced in October 2015 and is slated for completion by 2019...Friends of Nature says the project has destroyed the rain forest, threatens fish, and will submerge part of the Xishuangbanna Nature Reserve.  China Resources Power Yunnan Xishuangbanna Co. Ltd., which built the dam, and Kunming Engineering Co. Ltd., which carried out the project’s environmental impact assessment, are named as defendants in the case...The group has asked China Resources to stop cutting down protected plants, rectify the ecological threats posed by the dam, and...pay compensation for any environmental costs.  According to Friends of Nature...,...Kunming Engineering downplayed the project’s ecological damage in its environmental impact assessment, which the provincial-level government reviewed before giving the go-ahead for construction...[T]he region’s rapid development of hydropower stations has led to a “severe electricity glut” since 2012...Citing environmental concerns and the power surplus, Yunnan in July 2016 banned new hydropower plants with installed capacities below 250,000 kilowatts...But the Huilong Mountain station, which has a planned capacity of 113,000 kilowatts, was not called off because it had been approved before the ban...