Operation of hydroelectric reservoirs
EVN hydropower plants (including Power generation corporations) in the area affected by storm No. 10 still ensure the safety of the project. By 4:00 p.m. on September 30, 2025, 20 hydroelectric reservoirs were regulating their overflow.
Tuyen Quang Hydropower Plant: The largest flow to the lake was up to 6985 m3/s at 9:30 a.m. on September 30, and by 1:00 p.m. it had decreased to 5550 m3/s. Currently, Tuyen Quang Hydropower Plant is opening 8 deep spillways to ensure the safety of the project.
Thac Ba Hydropower Plant: The flow to the largest lake reached 4110 m3/s at 22:00 on September 29, and by 13:00 it had decreased to 2820 m3/s, currently Thac Ba Hydropower Plant is opening 3 floodgates.
Operation status of the 500/220/110 kV high-voltage power grid
Due to the impact of continuous storms and heavy rain, there have been a number of incidents on the 500/220/110 kV high-voltage grid system. Immediately after the storm's winds decreased, the operating units urgently mobilized vehicles and human resources to fix the incidents.
By the afternoon of September 30, units under the National Power Transmission Corporation and the Northern and Central Power Companies had restored 8/15 incidents on the 500kV power grid, restored 18/18 incidents on the 220kV power grid and restored 60/70 incidents on the 110kV power grid.
Power supply situation for customers
By the afternoon of September 30, with great urgency and efforts, units under the Power Corporation in the North and Central regions had restored power supply to more than 2.67 million customers out of a total of 4.12 million customers using electricity in 16 provinces and cities whose power supply was interrupted due to the impact of storm No. 10 (reaching a rate of nearly 65%).
With the spirit of the highest efforts to urgently restore power supply to customers affected by the storm, up to now, the Northern Power Corporation and the Central Power Corporation have mobilized a total of about 2,400 people and many vehicles from the local Power unit and from many other units to focus on supporting the incident handling and restoration of power supply.
