Saturday, January 25, 2025

September 20, 2022

What A ‘Total Blackout’ Would Mean For SA

If the national power grid collapses, the country would be plunged into a total blackout. It's a scenario that is genuinely frightening to think about.

[imagesource: Reuters / Siphiwe Sibeko /File Photo]

This weekend was perhaps the breaking point for many South Africans.

It’s one thing to experience stage six load shedding during the week. It’s quite another to have your weekend plans upended by four-and-a-half hour periods without power.

Jokes soon turned to venting, venting turned to anger, and the word ‘po*s’ trended on Twitter.

South Africa has now dropped to stage five, having teetered on the edge of stage seven yesterday. Fun fact – stage five means 5 000 MW will be shed from the grid, stage six means 6 000 MW shed from the grid, and so on.

Yesterday we shed 6 770 MW, so we were nudging stage seven. As of this morning, more than half of Eskom’s electricity generation capacity was offline.

As we carry on down this path, it’s perhaps worth considering what a ‘total blackout’ would look like. Here’s BusinessTech:

Eskom says that a total collapse of the national grid would be an unforeseen event, and its system operator would not be able to provide advanced warning should it occur.

Image: Twitter / Eskom

In the event that the grid collapses, this would result in a total blackout – which would leave the entire country without any power for “a few weeks” as it recovers.

A few weeks without power and things really turn into Lord of the Flies.

Should stage eight not be sufficient to keep the grid stable, the power (f)utility will instruct municipalities to cut a specific number of megawatts. We would then be looking at load shedding in excess of 12 hours per day.

Eskom CEO Andre de Ruyter said on Sunday that there was no immediate threat of a total blackout occurring. However, Eskom still runs “black start” tests to prepare for such an event.

“A black start test is basically when you test various pieces of [power] plants to look at their adequacy, should we have an unfortunate situation when we black out the whole system,” [Eskom] said.

According to Fin24, Eskom tests all its power stations once every three years “to see whether they would be able to restore their operations following a blackout, without relying on the national grid”.

The last black start test was carried out on some power stations on August 23.

Remember this?

And this?

Oh, this too?

You were saying, President Ramaphosa?

Speaking to CapeTalk, independent energy consultant Desmund Bernado didn’t mince his words when saying, “Get used to load shedding, and prepare for it to get worse.”

He also said that the moment we generate less than 20 000 MW, the possibility of a blackout becomes 50/50.

[sources:bustech&fin24&capetalk]