Since 2008, Dr. Yi Liu has been working on smart grid, and his research interests are in energy internet planning, and flexible energy resource planning, control and optimization. He has participated in several key smart grid projects of State Grid Corporation of China and China Southern Power Grid Company Limited. He participated in various work related to energy Internet in 2014. In early 2015, and he took part in the establishment of Sichuan Energy Internet Research Institute, Tsinghua University, and work as deputy director there until now.