There may just be no load shedding this summer

Eskom CEO Dan Marokane speaks to Reuters at the Eskom Head Office, in Johannesburg. Source: Reuters/Lelethu Madikane

But Eskom has not implemented power cuts in more than 150 days, since late March, after a big improvement in the performance of its fleet of mainly coal-fired power stations that caught many analysts off-guard.

CEO Dan Marokane told a briefing on the outlook for the upcoming southern hemisphere summer months, September to March, that there had been a sustained improvement in Eskom's plant performance over the winter months, April to August.

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Unplanned capacity losses have averaged around 12GW in the past four months, down from peak losses of about 18GW a year earlier.

Keeping losses in check

"For this coming summer (the) prognosis is that if we stay below 13,000MW of unplanned losses, we will be able to avoid load-shedding," Marokane said, using a term for power cuts.

As well as increased electricity availability at Eskom coal stations including Tutuka, Kendal and Kriel, renewable energy projects operated by independent producers have also delivered more electricity over the past year.

Marokane said Eskom should be able to say early next year when "load-shedding at the chronic level that it was is behind us," with an additional 2.5GW of generation capacity coming online in the next few months.