Thanh Hóa–Sầm Sơn 220 kV Transmission Line Energized
The Thanh Hóa–Sầm Sơn 220 kV transmission line was energized on the afternoon of November 11, 2026. The 40.1 km line connects the Thanh Hóa 500 kV substation with the Sầm Sơn 220 kV substation. Project representatives said it will strengthen power supply in Thanh Hóa province, while work continues on the remaining parts of the associated substation.
