全球能源发展经历了从薪柴时代到煤炭时代,再到油气时代、电气时代的演变过程。为适应未来能源发展需要,水能、风能、太阳能等清洁能源正在加快开发和利用,特别是近20年,世界能源发生了深刻变革,总体上形成煤炭、石油、天然气三分天下,清洁能源快速发展的新格局。能源资源。截至2013年,全球煤炭、石油、天然气剩余探明可采储量分别为8 915亿吨、2 382亿吨和186万亿米,折合标准煤共计1.2万亿吨。全球水能、风能、太阳能等清洁能源资源非常丰富。据估算,全球清洁能源资源每年的理论 Global energy development has gone through from the fuelwood era to the coal era, to the oil and gas era, the evolution of the electrical era. In order to meet the needs of future energy development, clean energy such as hydro-energy, wind energy and solar energy is accelerating the development and utilization. Especially in the past 20 years, profound changes have taken place in the world’s energy resources. In general, coal, oil and natural gas are formed in one place and clean energy is rapidly developed A new pattern of development. Energy resources. As of 2013, the world’s remaining recoverable reserves of coal, oil and natural gas were 895.5 billion tons, 238.2 billion tons and 186 trillion meters, respectively, equivalent to 1.2 trillion tons of standard coal equivalent. Global water, wind, solar and other clean energy resources are very rich. It is estimated that the annual global clean energy resources theory