The Ministry of Industry and Trade said it was requested by provincial authorities to revoke more than 20 hydropower projects due to delays in construction and possible impacts on the environment.
Quang Nam, Lao Cai and Khanh Hoa were among provinces that submitted such proposals, said Do Duc Quan, deputy director of the ministry's energy department.
The ministry will continue to ask other provinces to revise their small and medium power projects that are not feasible and can badly affect the environment, Quan said.
Vietnam in April last year put an end to 38 hydropower projects and scaled down 35 others that the authorities deemed unnecessary and harmful to the environment.
According to the Ministry of Industry and Trade, nearly 890 new hydropower plants have been planned around the country, with a total capacity of nearly 5,900 megawatts. However, only 100 projects have been implemented so far.