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日前，有研究对全球清洁能源进行了首次全生命周期评估，结果显示本世纪中期可再生能源足以满足全球的电力需求。
这份刊载在《美国国家科学院院刊》的研究显示，到2050年，全球低碳能源经济不仅是可行的，还会使电力产出加倍。
本次研究由挪威科技大学能源工程学院的埃德加·赫特维希教授和托马斯·吉本教授共同完成，他们对全球经济和应对气候变化的全球再生能源和清洁能源进行了首次全生命周期的成本评估。
研究人员在健康、污染物排放、土地性质变更或金属消耗等成本方面进行了深入研究。此外，考虑到从所需矿物质中提取加工的再生能源的经济价值，研究人员还评估了未来电厂对土地利用的影响。
之后的研究对两种情景进行了详细分析：第一种情景，2050年全球电力生产上升134%，其中化石燃料发电量占三分之二;第二种情景，由于能源的高效使用，2050年的电力需求比第一种情景少增长13%。
研究者发现，新能源使用的增长仅需要增加10%的钢铁产量，而光伏系统可能需要11-40倍的铜。即便如此，按目前的使用需求，两年份生产的铜和一年份生产的铁足够在2050年建立一套低碳的世界电力供应体系。
Recently， a research assesses the life circle of the clear power in the world for the first time， and the result shows that by the middle of this century the recyclable resources may be able to meet the power demand of the world.
The research， which is published in the Proceedings of the National Academy of Science shows that by 2050， low carbon energy economy will not only be practical， but could also double the production of electricity.
This research is finished jointly by two professors， Edgar Hertwich and Thomas Gibon of School of Energy Engineering of Norwegian University of Science. They have the first assess of the cost of world economy and the recyclable resources and clear resources that are to cope with climate changes.
The researchers have had in-depth study of the all kinds of cost， such as health， discharging of pollutants， changes of the traits of the lands or metal wasting. Besides， considering the economic value of the recyclable resources which is processed after being extracted from demanded mineral substances， the researchers have also assessed the effect the power plant will have on the utilization of land.
After that the research elaborates two situations： the first is that by 2050 the power generation of the world increase by 134 percent and oil generation takes up two thirds of the total value; the second situation is that due to high efficiency of using energy， the power demand of 2050 is 13 percent less than that of the first situation.
The researchers found that the increase of new energy only needs 10 percent increase of the production of iron and steel increase， while the photo voltaic system needs 11 to 40 times the production of copper. Even so， judging from the present demands， the copper produced in two years and the iron produced in one year could build a low-carbon supplying system of the world power.
http：//www.eedu.org.cn/news/resource/energysources/201410/97577.html
这份刊载在《美国国家科学院院刊》的研究显示，到2050年，全球低碳能源经济不仅是可行的，还会使电力产出加倍。
本次研究由挪威科技大学能源工程学院的埃德加·赫特维希教授和托马斯·吉本教授共同完成，他们对全球经济和应对气候变化的全球再生能源和清洁能源进行了首次全生命周期的成本评估。
研究人员在健康、污染物排放、土地性质变更或金属消耗等成本方面进行了深入研究。此外，考虑到从所需矿物质中提取加工的再生能源的经济价值，研究人员还评估了未来电厂对土地利用的影响。
之后的研究对两种情景进行了详细分析：第一种情景，2050年全球电力生产上升134%，其中化石燃料发电量占三分之二;第二种情景，由于能源的高效使用，2050年的电力需求比第一种情景少增长13%。
研究者发现，新能源使用的增长仅需要增加10%的钢铁产量，而光伏系统可能需要11-40倍的铜。即便如此，按目前的使用需求，两年份生产的铜和一年份生产的铁足够在2050年建立一套低碳的世界电力供应体系。
Recently， a research assesses the life circle of the clear power in the world for the first time， and the result shows that by the middle of this century the recyclable resources may be able to meet the power demand of the world.
The research， which is published in the Proceedings of the National Academy of Science shows that by 2050， low carbon energy economy will not only be practical， but could also double the production of electricity.
This research is finished jointly by two professors， Edgar Hertwich and Thomas Gibon of School of Energy Engineering of Norwegian University of Science. They have the first assess of the cost of world economy and the recyclable resources and clear resources that are to cope with climate changes.
The researchers have had in-depth study of the all kinds of cost， such as health， discharging of pollutants， changes of the traits of the lands or metal wasting. Besides， considering the economic value of the recyclable resources which is processed after being extracted from demanded mineral substances， the researchers have also assessed the effect the power plant will have on the utilization of land.
After that the research elaborates two situations： the first is that by 2050 the power generation of the world increase by 134 percent and oil generation takes up two thirds of the total value; the second situation is that due to high efficiency of using energy， the power demand of 2050 is 13 percent less than that of the first situation.
The researchers found that the increase of new energy only needs 10 percent increase of the production of iron and steel increase， while the photo voltaic system needs 11 to 40 times the production of copper. Even so， judging from the present demands， the copper produced in two years and the iron produced in one year could build a low-carbon supplying system of the world power.
http：//www.eedu.org.cn/news/resource/energysources/201410/97577.html