Huaneng Hydropower Southern Power Grid Yunnan Company. According to the information released by official website of Huaneng Hydropower Southern Power Grid Yunnan Company, it is known that Huaneng Hydropower is a power plant that exports electricity to Vietnam. Huaneng Hydropower Southern Power Grid Yunnan Co., Ltd. cooperates with Vietnamese companies to supply power to Vietnam, and Huaneng Hydropower will raise the price to sell electricity, with promising future performance. Export, simply speaking, means that enterprises export their own manufactured goods to other countries or regions to collect foreign exchange, which can be called export.