Perdekraal Wind Farm Recieves a 500 MVA Mega Transformer


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One of the two South African Round 4 wind farms being constructed by Mainstream has taken delivery of its last major component. The arrival of the 500 MVA mega transformer at the Perdekraal East project site marked a resumption of operations after the Covid-19 lockdown in the Western Cape.

It also highlighted the growing role of the local supply chain in the country’s renewable energy transition.

Like the project’s 48 turbine towers, the transformer was manufactured in South Africa – with local content set to account for almost half of the completed wind farm.

Mainstream has worked with domestic industry to meet the Department of Energy’s local content requirements, which have steadily increased with each bid window, and is now using components that were previously only available as imports.

The transformer, now awaiting installation at a substation near the town of Ceres, will step up the voltage of the wind farm’s generated power to 400kV, making it suitable to feed into the national grid.

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Following its arrival by road from Pretoria, Glenn Hobson, Construction Project Manager for Perdekraal Wind Farm, said: “We are pleased to confirm that our obligation for local content exceeds 48% of the total project value, making this a truly South African endeavour.”

Activities at the site – one of 12 wind farms currently under construction in South Africa – restarted in late May after 50 days of lockdown.

Hobson added: “We hadn’t anticipated the full impact of the COVID-19 virus but our team is working hard under the less than ideal situation, considering the added HSE requirements and procedures that are now part of our daily construction protocols.”

The 110 MW Perdekraal Wind Farm has been developed, is being constructed and will be operated by Mainstream for our Africa joint venture, Lekela Power. When commissioned later this year, it will have the capacity to generate 368 800 GWh/year of clean, renewable power into South Africa’s national power grid, equivalent to the annual energy needs of 111,118 homes.

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