[China's first domestic variable-speed pumped storage unit rotor hoisting] On October 1, reporters learned from China Southern Power Grid that today, the rotor of the variable-speed unit of the Langjiang pumped storage project in Zhaoqing, Guangdong was successfully hoisted, marking the completion of the main body installation of China's first domestic variable-speed pumped storage unit. The variable-speed pumped storage unit is 100% domestically produced. It can flexibly adjust the speed according to the needs of the power grid, which is more conducive to the efficient and flexible consumption of new energy. It is estimated that the unit can convert the electric energy generated by new energy sources into 280,000 cubic meters of water energy per hour and store it to stably generate electricity when the grid needs it. (CCTV News)