The risk of a total blackout in South Africa is not keeping him awake at night, says Eskom acting CEO Calib Cassim, but rather any escalation in loadshedding beyond Stage 6.

“One of the biggest questions that I am asked from various stakeholders is whether the country is going to experience a blackout. I have all the confidence . . . that we’ll never get there.

“I lose more sleep about whether we’ll touch Stage 8, because we need to manage that.”

Cassim says the Eskom team managing the system has been operating under consistent stress for the past three years.

“They are making decisions by the second and we must have the confidence to support them.”

Eskom Transmission GM Segomoco Scheppers emphasises that loadshedding is not the same as rolling blackouts, as loadshedding means that electricity supply and demand are actively being managed, while a blackout points to an event “out of your control”.

“From a technical perspective, there are so many checks and balances in place . . . you need to breach about seven control checks to eventually get to a blackout, and that is why we have confidence in the team, and, more importantly, in the controls that are in place,” adds Cassim.

He notes that Eskom has tested these controls, as well as how to recover should the threat of a blackout become apparent.

Scheppers says there are plans in place for loadshedding – which he describes as “a controlled reduction in demand” – up to Stage 16. He emphasises that every stage, be it Stage 6 or 8, means that the system is actively being managed and “that we are in control”.

Success Would be Stage 6 Max This Winter
Looking at the threat the cold winter months present to the power system in the months ahead, Cassim says Eskom starts the season “on the back foot”, as it is without 3 000 MW from the Koeberg and Kusile power stations it had available last winter, “which makes it really difficult”.

“We must acknowledge Eskom’s shortcomings as well, with the unavail- ability factor between 16 000 MW and sometimes up to 19 000 MW.

“The reality is that it is going to be tough, but if we can keep the peaks at Stage 6 or lower, and the off-peaks at Stage 4, I think we are going to have a successful winter.”

Cassim adds that there is some positive relief going forward, as Kusile’s units should come back online at the end of December, with Unit 5 also to be commissioned.

Corruption
Cassim says the number of corruption cases being reported through the State-owned power utility’s whistleblowing structures is increasing month-on-month, which he views “as a positive”.