Thirty years ago, at 7:07pm on May 27, 1994, the 500kV power transmission line system was officially put into operation. This was said to be a miracle of the 20th century since it set unprecedented records such as the length of nearly 1,500km, complex technology, and design and construction conducted concurrently in just two years.

Deputy Prime Minister Trinh Dinh Dung laid stress on the urgent need to build 500kV transmission lines running through Ha Tinh, Quang Binh, Quang Tri, Thua Thien-Hue, Da Nang, Quang Nam, Quang Ngai, Kon Tum and Gia Lai to meet increasing power demand, especially in the south.