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Data & Statistics

Namibia: Growth in Electricity Transmission Network [free access]

February 12, 2018

NamPower owns, operates and maintains a transmission network comprising 66 kV to 400 kV overhead lines.

 

During 2017, Namibia’s high voltage transmission network (132 kV to 400 kV) spanned over 7,927 km, of which the majority was operational at the 220 kV voltage level. Since 2013, Namibia’s high voltage line network has increased at a CAGR of 1.35 per cent.

 

Table 1: Growth in Namibia’s transmission line length (km)

Voltage

2013

2014

2015

2016

2017

132 kV AC

          2,141

          2,142

          2,318

2,257

2,258

220 kV AC

          2,910

          2,910

          3,013

3,206

3,206

330 kV AC

              522

              522

              522

522

522

350 kV HVDC

              953

              953

              953

953

953

400 kV AC

              987

              987

              988

988

988

Total

 7,513

 7,514

7,794

7,926

7,927

Annual growth rate (%)

0.3

0.0

3.7

1.7

0.01

Note: AC – alternating current; HVDC – high voltage direct current

Figures are as of end of June for the mentioned year.

Source: NamPower

 

The country’s grid is interlinked with those of South Africa and Zambia, via two links. The Caprivi Link, which interconnects Namibia and Zambia, has reinforced electricity transmission among the Southern African Power Pool (SAPP) member countries.

 

Table 2: Namibia’s existing cross-border interconnections

Interconnection

Voltage

Length (km)

Year of commissioning

Kokerboom (Namibia)–Aggeneys (South Africa)

400 kV AC

NA

2001

Caprivi Link [Gerus (Namibia)–Zambezi (Zambia)]

350 kV HVDC

970  km (of which 953 km is in Namibia)

2010

Note: AC – alternating current; HVDC – high voltage direct current

Source: NamPower; Global Transmission Research