Zimbabwe Electricity Supply Authority

<p>ZiZaBoNa creates a new Western Transmission Corridor in Southern Africa, by linking the power systems of Zimbabwe, Zambia, Botswana and Namibia. This part of the project involves the construction of a 76 km / 330 kV transmission interconnector from Pandamatenga Substation (Botswana) to Victoria Falls Substation (Zimbabwe), with a transmission capacity of 300 MW.</p>

<p>ZiZaBoNa creates a new Western Transmission Corridor in Southern Africa, by linking the power systems of Zimbabwe, Zambia, Botswana and Namibia. This part of the project involves the construction of a 231 km / 330 kV transmission interconnector from Livingstone Substation (Zambia) to Zambezi Substation at Katima (Botswana), with a transmission capacity of 300 MW. Here it joins the Caprivi HVDC link.</p>

<p>ZiZaBoNa creates a new Western Transmission Corridor in Southern Africa, by linking the power systems of Zimbabwe, Zambia, Botswana and Namibia. This part of the project is the first phase of the bigger ZiZaBoNa project and involves the construction of a 101 km / 330 kV transmission interconnector from Hwange Power Station to Victoria Falls Substation in Zimbabwe and construction of the 14km Victoria Falls to Livingstone cross-border link with a transmission capacity of 300 MW.</p>

<p>The project will establish a second transmission interconnector between South Africa and Zimbabwe, enhancing the wheeling capacity of the Central Transmission Corridor by 1500 MW. The Zimbabwean section stretches from the South African border to Plumtree in the Matabeleland region of&Acirc; Zimbabwe, close to the border with Botswana.</p>
<p>The second transmissioninterconnector between South Africaand Zimbabwe will increase theZimbabwean wheeling capacity,unlocking bottlenecks for the benefitof the sub-utility companies in theregion. The project will enhance thetransfer capacity from the north tothe south, which will unlockgeneration project development inMozambique, leading to excesscapacity to enable improved trade inthe region.</p>

<p>The proposed BGHES is a bi-national hydro power project to be located approximately fifty-four (54) kilometres downstream of the Victoria Falls and will extend across the international boundary between the Republics of Zambia and Zimbabwe.</p>
<p>Through several subsequent studies and analysis (1981,1992-1993, 1998 and 2015) the current technical configuration for the BGHES comprises:</p>
<ul>
<li>176m high, 720m crest length Roller Compacted Concrete gravity arch dam;</li>
<li>Radial gated central crest spillway;</li>
<li>Two surface power plants, one on either side of the river bank, each with a capacity of 1,200MW, giving a combined capacity of 2,400MW;</li>
<li>6 x 200MW Francis turbines in each powerhouse;</li>
<li>Four water intakes delivering water through 4 tunnels (each approximately 1km in length) to the two surface power plants downstream of the dam;</li>
<li>Diversion tunnel</li>
<li>Switchyards for both power plants</li>
<li>Construction of the staff townships with social amenities and office complex for the Authority and Power utilities on Batoka North and Batoka South.</li>
<li>The staff townships will initially be permanent construction camps and located one on the north bank of the dam (in Zambia) and the other one on the south bank (in Zimbabwe).</li>
</ul>
<p>Single trasmission lines in Zambia (directed from the Project)&Acirc; will be located as follows:</p>
<ul>
<li>2 x 55km of 330kV, Single Circuit Overhead Transmission lines between Batoka North Bank Power Station and Mukuni Substation, Livingstone.</li>
<li>1 x 170km of 330kV, Single Circuit Overhead Transmission Line between Batoka North Bank Power Station and Muzuma Substation, Choma.</li>
<li>2 x 230km of 330kV, Single Circuit Overhead Transmission Lines between Batoka North Bank Power Station and Nambala Substation, Mumbwa.</li>
</ul>
<p>Single trasmission lines in Zimbabwe (directed from the project)&Acirc; will be located as follows:</p>
<ul>
<li>Batoka North and Batoka South Interconnector (2 x 400kV);</li>
<li>BGHES to Victoria Falls (1x 400kV x 30km) in Zimbabwe&Acirc; complete with 2 x 400kV line bays;</li>
<li>Victoria Fall to Hwange (1 x 400kV x 55km) line complete with 2 x 400kV line bays</li>
<li>Victoria Falls 400/(132)88kV Substation complete with 4 x outgoing (132)88kV line bays</li>
<li>BGHES to Chakari (2 x 400/330kV x 400km) in Zimbabwe complete with 4 x 400kV line bays.</li>
<li>Chakari to Selous (1 x 330kV x 70km) line in Zimbabwe complete with 2 x 330kV line bays The line will be 400kV construction but operating at 330kV.&Acirc; </li>
<li>Selous to Dema (1 x 330kV x 95km) line in Zimbabwe complete with 2 x 330kV line bays. The line will be 400kV construction but operating at 330kV.&Acirc; </li>
<li>All lines shall come with 2 x Earthwire peaks ( 1 x 48 Core OPGW and 1 x GSW)</li>
</ul>
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