A Lin B1 hydroelectric project is located on A Ling stream, in the territory of Hong Trung and Hong Van communes, A Luoi district, Thua Thien Hue province, which was a project invested by Truong Phu Hydropower Joint Stock Company by method of Organization - Ownership - Business (BOO). The project was approved by the Ministry of Industry and Trade with Document No. 3360 / BCT-NL, dated April 25, 2008, agreeing to adjustment and supplement the Small Hydroelectric Plan in Thua Thien Hue province. The project was approved by the investor with the basic design in decision no. 08/2008 / QD-TPH dated December 30, 2009 and allowed the promotion of procedures to carry out the project. Truong Phu Hydropower Joint Stock Company assigns PECC3 to study, survey and design all 3 phases. Alin B1 hydroelectric project was expected around 12/2017 to generate electricity and integrate into the national grid.