Kariba South Hydro power station to save Zimbabwe millions

23 December 2016

Falling levels in the Zambezi river initiated the need to import power for Zimbabwe, because the Zambezi River Authority had to ration water allocated to power generation. Zimbabwe import 300 MW of power from Eskom (South Africa) each month, at a cost of US$0,14/KWh.

Daily national consumption of power is forecast at 1 400 MW in summer and 1800 MW in winter. The average daily national power generation capacity  sits at 956 MW, creating a power deficit for the nation. The US$ 533 million Kariba South expansion project is expected to substitute the need to import power.

The Zimbabwe Electricity Supply Authority is currently prepaying US$ 6,5 million per month for imports  from Eskom and Hydro Cahorra Bassa of Mozambique . This translates to US$78 million annually.  If the Kariba South Hydro Power Station is successfully added onto the national grid, the 300 MW expected from the expansion will save the power utility the huge import bill.

The Kariba South expansion project is expected to start feeding power into the grid by December 2017. The project which is 60% complete is being undertaken by China’s Sino Hydro. All underground excavations have been completed , except for the removal of intakes and outfall temporary protection coffer dams, which is currently in progress.

Electro-mechanical works are 50% complete and some major equipment has already been installed at site. Some of the installed equipment includes two 250-tonne cranes, draft tubes stay rings and unit seven spiral casing, constituting the generating components. Mr. Partson Mbiriri, the Secretary  for Energy and Power Development, also confirmed that equipment in transit from manufacturers in China includes; generator transformers, shunt reactors, intake gantry cranes and turbine generator components.

Zambia and Zimbabwe are jointly pursuing the Batoka Gorge project, as another initiative being pursued to increase power generation.

Extract from constructionreviewonline.com

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