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.
On the afternoon of November 11, 2026, the National Power Transmission Corporation (EVNNPT), the Central Power Projects Management Board (CPMB) and related organizations energized the Thanh Hóa–Sầm Sơn 220 kV transmission line. The line is part of the Sầm Sơn 220 kV substation and Thanh Hóa–Sầm Sơn 220 kV connection line project. Work on the remaining parts of the substation is continuing.
The Thanh Hóa–Sầm Sơn 220 kV transmission line, which has been energized.（VietVance）
The newly built double-circuit line runs 40.1 km from the Thanh Hóa 500 kV substation to the Sầm Sơn 220 kV substation, passing through 11 communes and wards in Thanh Hóa province. EVNNPT is the project investor, and CPMB manages the project. Power Transmission Company 1 will take over operations after the project is completed.
Project representatives said the line will strengthen power supply in Thanh Hóa province once it enters operation, particularly in the province’s rapidly industrializing eastern areas, and improve the reliability of the regional grid and electricity supply. The organizations involved are continuing work on the remaining parts of the Sầm Sơn 220 kV substation, aiming to complete the entire project on schedule.
Source: VietVance
