In 2020,in response to the COVID-19 pandemic and low oil prices,the governments of resource countries successively introduced fiscal,tax and financial supporting policies to ease the operational difficulties faced by the oil industry.In addition,they accelerated the clean energy transition by increasing the LNG production capacity,expediting the construction of renewable energy projects and vigorously developing hydrogen energy.Many consumer countries accelerated the transition of the energy structure to clean energy,set carbon neutrality goals and intensively released supporting policies for accelerating the green and low-carbon transition of the energy structure.They also built a strong power supply system to adapt to the new development of the green economy,promoted the international interconnection of power grids and the coordinated development and utilization of energy resources,and built a more flexible and inclusive electricity market.Moreover,they continued to accelerate the low-carbon and energy-saving transition of the transportation sector,reduced emissions and pollution by switching marine and aviation fuels,and further promoted the high-quality development of electric vehicles.