首先应該指出的是:不能把水电站只看成是电网內的备用容量,只負担火电站的尖峰負荷;水电站完全有权被看做是电力工业的主要的生产电力的企业。在一些国家,几乎全部的用电是由水电站来滿足的: 加拿大水电占总发电量的96％日本水电占总发电量的74％意大利水电占总发电量的77％瑞典水电占总发电量的88％挪威水电占总发电量的99％ First of all, it should be pointed out that the hydropower station cannot be regarded as only the backup capacity in the power grid, but only the peak load of the thermal power station; the hydropower station has the right to be regarded as the main power production enterprise in the power industry. In some countries, almost all electricity use is met by hydropower stations: Canada’s hydropower accounts for 96% of total power generation. Japan’s hydropower accounts for 74% of total power generation. Italy’s hydropower accounts for 77% of total power generation. Swedish hydropower accounts for total power generation. 88% of Norwegian hydropower accounts for 99% of total electricity generation