能源短缺是一个世界性的问题。在我国,能源短缺与经济发展之间的矛盾已日趋显现,这使我想到我国西部地区蕴藏丰富但仍未被充分开发利用的水能资源。数据资料显示:我国西部地区,无污染的水能资源最为丰富,理论蕴藏量约为5.57亿千瓦,占全国的82%;可开发水能资源约为2.743亿千瓦,占全国的 Energy shortages are a worldwide problem. In our country, the contradiction between energy shortage and economic development has become increasingly apparent, which reminds me of the hydropower resources in western China that are rich in resources but still not yet fully exploited. Data show that: the western region of China, the most abundant non-polluting water resources, the theoretical reserves of about 557 million kilowatts, accounting for 82% of the country; water resources to develop about 274.3 million kilowatts, accounting for the national