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Vietnam: Growth in Electricity Transmission Network [free access]

April 11, 2018

At the end of 2016, Vietnam’s transmission sector comprised 42,960 km of transmission lines ranging between 110 kV and 500 kV. The majority or about 45 per cent of the line length comprises 110 kV lines. Since 2012, line length has increased at a CAGR of 10.03 per cent. 

 

Table 1: Growth in Vietnam's transmission line length (km)

Voltage

2012

2013

2014

2015

2016

110 kV

    13,141

       13,449

        16,671

           18,714

19,335

220 kV

     11,313

      11,750

        12,568

           15,187

16,179

500 kV

       4,848

         5,292

           6,755

             7,183

7,446

Total

     29,302

       30,491

        35,994

           41,084

          42,960

Annual growth rate (%)

            8.3

              4.1

             18.0

               14.1

                  4.6

Source: EVN NLDC; EVN NPT; Ministry of Industry and Trade; Global Transmission Research

 

Vietnam’s transformer capacity stood at 123,248 MVA by the end of 2016. Of the total, 42 per cent of the transformer capacity was at the 110 kV level, 36 per cent was at the 220 kV and 21 per cent was at the 500 kV level. Since 2012, the transformer capacity has increased at a CAGR of 15.41 per cent.

 

EVN also holds a monopoly in transmission. Its subsidiary, National Power Transmission Corporation (EVN NPT), was established in 2008 for management of and investment in the 220 kV to 500 kV power transmission network. EVN NPT has divided the country into four regions and has a separate subsidiary for each, called Power Transmission Company No. 1, 2, 3 and 4, respectively.

 

Table 2: Growth in Vietnam’s transformer capacity (MVA)

Voltage

2012

2013

2014

2015

2016

110 kV

     27,908

       35,421

           38,124

           45,593

           52,360

220 kV

     26,310

       28,476

           32,601

           38,101

           44,788

500 kV

     15,244

       19,350

           21,900

          22,950

          26,100

Total

     69,462

       83,247

           92,625

       106,644

      123,248

Annual growth rate %

          14.7

           19.8

                11.3

               15.1

               15.6

Source: EVN NLDC; EVN NPT; Ministry of Industry and Trade; Global Transmission Research