Power Restoration Efforts Post-Typhoon No. 10: EVN’s Latest Update

EVN has released an update on the impact of Typhoon No. 10 (BUALOI) on power operations and supply as of the afternoon of September 30, 2025.

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Hydropower Plant Operations Update:

EVN’s hydropower plants, including those under its power generation subsidiaries, have maintained structural integrity in areas affected by Typhoon No. 10. As of 4 PM on September 30th, 20 hydropower reservoirs are actively releasing water through spillway gates.

Tuyen Quang Hydropower Plant: Peak inflow reached 6,985 m³/s at 9:30 AM on September 30th, decreasing to 5,550 m³/s by 1 PM. The plant currently has 8 deep discharge gates open to ensure safety.

Thac Ba Hydropower Plant: Peak inflow reached 4,110 m³/s at 10 PM on September 29th, decreasing to 2,820 m³/s by 1 PM on September 30th. The plant currently has 3 surface spillway gates open.

Detailed reservoir information: https://www.evn.com.vn/c3/thong-tin-ho-thuy-dien/Muc-nuoc-cac-ho-thuy-dien-117-123.aspx

High-Voltage Grid Operations Update (500/220/110 kV):

Prolonged heavy rainfall and strong winds caused multiple disruptions across the 500/220/110 kV transmission network. Restoration efforts began immediately after wind speeds subsided.

By September 30th evening, crews restored: 8/15 faults on the 500kV grid, 18/18 faults on the 220kV grid, and 60/70 faults on the 110kV grid.

Power Restoration to Customers:

By September 30th evening, power was restored to 2.67 million customers (65% of affected population) across 16 provinces/cities impacted by Typhoon No. 10. Total affected customers: 4.12 million.

Over 2,400 personnel and specialized equipment from local and regional power companies were mobilized to expedite restoration efforts.

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