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SAPP: Existing Transmission Network and Planned Interconnections [free access]

June 5, 2019

By the end of 2017-18, the total transmission line length of six member countries (for which line length details were available), namely, DRC, Mozambique, Namibia, South Africa, Tanzania and Zambia, was over 72,000 km. The transmission network of these six countries grew at a CAGR of 5 per cent.

 

During 2018, South Africa had the maximum line network of 31,951 km among these six countries. Zambia witnessed the maximum growth (23 per cent), with its line network increasing from 4,785 km in 2013 to 10,969 km by 2018.

 

Table 1: Transmission line length of SAPP member countires (km)

Country

2013

2018

Democratic Republic of Congo (DRC)

5,510

5,510

Mozambique

5,422

5,988

Namibia

     11,119

11,673

South Africa

     29,297

     31,951

Tanzania

4,270

5,943

Zambia

4,785

10,969

Note: Line length data for Tanzania is in circuit km.

2018 data for Mozambique, Tanzania and Zamiba is estimated.

For South Africa, data is as of March of the respective year.

Source: Southern African Power Pool (SAPP); Global Transmission Research

 

The SAPP region is implementing 11 priority transmission projects. These projects aim to create new power corridors to support industrial development and improve energy security in the region without overloading the existing transmission network. One of the key projects is the Zambia–Tanzania–Kenya (ZTK) interconnection project, which aims to link the Eastern Africa Power Pool (EAPP) and SAPP.

 

SAPP has secured multilateral funding for various transmission projects and associated activities. Some of the recent efforts include the ongoing discussions with the Development Bank of Southern Africa (DBSA) for the Mozambique–Zimbabwe–South Africa (MoZiSa) transmission project. The African Development Bank (AfDB) has also assessed several SADC regional interconnection projects and is in the final stages of approving the same. SAPP has also secured funding from the International Development Association (IDA) for consultancy services to establish the SAPP transmission infrastructure development financing facility.

 

Table 2: Planned interconnection projects by SAPP

Project

Technical parameters

Expected commissioning

Angola–Namibia (ANNA) Interconnector

400 kV, 360 km

2025

Botswana–South Africa (BOSA) Interconnector

NA

2024

Kolwezi (DRC)–Solwezi (Zambia) Interconnector

330 kV

2019

Malawi–Tanzania Interconnector

NA 

NA 

Malawi–Zambia Interconnector

400 kV, 286 km

 

Mozambique–Malawi Interconnector

400 kV, 218 km

2021

Mozambique–Tanzania (MOTA) Interconnector

 NA

NA 

Mozambique–Zambia Interconnector

400 kV, 368 km

NA 

Mozambique–Zimbabwe–South Africa (MOZISA) Transmission Project

400 kV, 935 km

2022

Zambia–Tanzania–Kenya (ZTK) Interconnector

400 kV, 1,440 km

2021

Zimbabwe–Zambia–Botswana–Namibia Interconnector (ZIZABONA)

330 kV, 408 km

2021

Note: NA: not available

Source: Southern African Power Pool (SAPP); Global Transmission Research