In this 100 m image from April this year, PROBA-V spotted the Longyangxia solar-hydro power station, just to the west of the Longyangxia Reservoir in China’s Qinghai province. This station, covering an impressive 23 square kilometres, has become one of the most productive in the world, yielding around 850MW in solar and almost 1300MW in hydroelectric power. Moreover, the joint regulation of the solar park and the dam’s turbines balance the output from the variable solar power generation and helps to conserve water. The picture also captured Qinghai Lake, the largest lake in China, located in a hollow of the Tibetan Plateau at at 3200 m above sea level. No deeper than 30 meters and declining in depth, it’s still a major water source for many. The lake shrunk in surface area in most of the 20th century, but its size is recovering since 2004.