China promises that the carbon dioxide emissions will reach the peak in 2030 and the non-fossil energy will make up 20% of the primary energy consumption as agreed in the "China & US joint statement on climate change. In this paper, an analysis is made on the inherent requirements of the target and its impact on the development of energy and power. The study shows that the key actions for reaching the peak emissions as quickly as possible and inherently reducing the peak value are to control the total energy consumption and develop the clean energy. In order to support this target, China's non-fossil energy power installation and generation capacity shall make up 50% and 39% of the total energy power installation and generation capacity respectively in 2030, and 40% of the renewable energy installation needs to be transported through trans-regional power grid for utilization.