煤电GHG排放强度模型及其应用

Coal Power GHG Emission Intensity Model and Its Application

近年来,煤电占我国年总发电量超过80%,是我国最大的温室气体(GHG)排放源,也是实现我国GHG减排目标的关键行业.为了分析GHG排放限制对煤电行业的影响,构建了包含煤炭开采、运输、发电、废弃物处理等环节——煤电全生命周期GHG排放核算模型,并以华东地区某火力发电企业为案例进行实证分析,研究结果表明:该电厂每度电GHG排放量为1.018千克,根据当前国际GHG排放权交易市场的交易价格,该电厂单位电能GHG排放成本为0.122～0.255元/kWh,从2006年到2009年的经营数据看,该电厂GHG排放成本均高于当年的净利润,考虑了GHG排放成本后该电厂利润均为负值.

China＇s power structure is dominated by coal-fired power,which accounts for more than 80% of power output in the past few years.Coal-fired power industry is vital to realizing China＇s GHG reduction target.A GHG accounting model was established based on Life Cycle Assessment（LCA） method which included processes： coal mining,coal transporting,coal combustion and waste disposal.Case study from a coal-fired power station located in the east of China revealed that GHG emission per kWh is 1.018 kg CO2-e.GHG emission cost of the factory is $0.122～0.255/kWh.Net profit of the coal-fired power station was negative if GHG emission cost was considered.