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我国的电力生产主要依靠燃煤发电,2007年全国发电量为32644亿kW.h,其中燃煤发电为27027亿kW.h,占83.3%,水电为4714亿kW.h,占14.4%。水力发电量如以燃煤发电计算需消耗燃煤1.57亿t(为当年全国煤碳生产总量的6.2%),多排放CO_2 2.69亿t。因此,水电对我国减轻资源环境压力、应对气候变暖具有十分重要的作用。
China’s electricity production mainly relies on coal-fired power generation. In 2007, the national power generation was 3,264.4 billion kW.h, of which coal-fired power generation was 2,702.7 billion kW.h, accounting for 83.3% and hydropower 471.4 billion kW.h, accounting for 14.4%. If the calculation of coal-fired power generation consumes 157 million tons of coal (which is 6.2% of the national total coal production in that year), it will emit 269 million tons of CO_2 more. Therefore, hydropower plays a very important role in reducing the pressure on resources and environment in our country and coping with climate warming.