Co-sponsored by the Resources and Environment Policy Research Institute and the Industrial Economy Research Department of the Development Research Center of the State Council, “China Clean Energy-Gases Development and the Grand Energy Transition Forum 2015” was held in Beijing on November 14, 2015. The Forum aimed to promote the reasonable development, utilization and international cooperation of clean energy-gases, push the energy revolution and realize the great energy transition. The basic rules of great energy transition as well as its policy and technology support and guarantee were discussed. Innovation results of technology, finance, industry and business modes that drive great energy transition were displayed and introduced. The research achievements such as the green book of 2015 China Clean Energy-Gases Development Report. Representatives from industries, universities and research fields such as Tsinghua University, North China Electric Power University, Zhejiang University, Sinopec, ENN, Shanghai International Energy Exchange, American company Ofei, American company Grape Solar, LNG Fund, FGE attended the Forum and made speeches for more than 300 audiences.