Why should Zhangjiachuan County install solar street lamps?

Save energy. According to the official website of Sol Zhang Municipal Government, in order to save electricity and protect the environment, Zhangjiachuan County has installed solar street lamps throughout the county. Zhangjiachuan Hui Autonomous County is an autonomous county under the jurisdiction of Tianshui City, Gansu Province. It is located in the southeast of Gansu Province and the northeast of Tianshui City, and is located in the south extension section of Liupanshan Mountain.