Study on the Development and Utilization of Renewable Energy in China Guizhou Ren, Fangqing Li, Gang Liu, JianXin Ren, Yudong Liu and Honghong Shen E3S Web Conf., 136 (2019) 02013 Published online: 10 December 2019 DOI: 10.1051/e3sconf/201913602013