They include the Quang Trach - Quynh Luu and Quynh Luu -Thanh Hoa 500kV circuit-3 transmission lines and the 500kV Thanh Hoa substation.
They are part of a 500kV circuit-3 transmission line projectwhich spans 519km from the central province of Quang Binh’s Quang Trachdistrict to the northern province of Hung Yen’s Pho Noi.
The transmission lines hold significant importance in enhancing the capacity ofthe 500kV north-central power transmission grid, contributing to ensuringelectricity supply for the northern region both currently and in the comingyears. The project also helps improve the stability and operation of thenational power system, as well as reduces the risk of overload for existing500kV transmission lines./.