The giant Baihetan hydropower plant began generating electricity for the first time on Monday for a test run. The dam is located downstream of the Jinsha River, an upper section of the Yangtze River, on the border of southwest China’s Sichuan and Yunnan provinces. According to state media, the power plant has 16 generating units with an expected capacity of 62 billion kilowatt hours of electricity per year. The centerpiece is a 50-meter-high, one-million-kilowatt generator. When fully operational, Baihetan will be the world’s most powerful power plant after the Three Gorges Dam in the central Chinese province of Hubei.