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澜沧江中下游河段是我国近期重点开发的水电能源基地之一．这个河段首先开发的里湾水电站一期工程已经建成，另外五个主要水电站的开发建设和前期工作已全面辅开．小湾水电站规模巨大，又具有良好的调节性能，可以对下游各电站乃至云南电力系统内的水电站群发挥巨大的补偿效益，是澜沧江中、下游水电能源基地的关键工程，也是理顺云南电力系统电源结构不合理状况的关健性工程．小湾水电站的技术经济指标是好的，国民经济内部收益率为１７．３％，财务内部收益率为１６．５４％，小湾水电站还有拦沙、防洪、航运、替代燃煤等社会和环境效益．
The middle and lower reach of the Minjiang River is one of the most important hydropower energy bases in China recently. The first phase of the Liwan Hydropower Project that was first developed in this reach has been completed, and the development and construction of the other five major hydropower stations have been fully complemented. The Xiaowan hydropower station is huge in size and has good regulation performance. It can play a huge compensation benefit for the downstream hydropower stations and even the hydropower stations within the Yunnan power system. It is a key project for the hydropower energy base in the middle and lower reaches of the Lancang River, and it also rationalizes the Yunnan power system. The irrational condition of the power structure is a key project. The technical and economic indicators of Xiaowan Hydropower Station are good, the internal rate of return of the national economy is 17.3%, and the financial internal rate of return is 16.54%. The Xiaowan Hydropower Station also has social protection such as sand interception, flood control, navigation and alternative coal burning. Environmental benefits.