It is so frustrating that the electricity debate in SA is dominated by pseudo-experts - why does the media not invite electrical engineers to contribute to this debate?

De Vos makes the common error of comparing the cost of intermittent wind and solar with nuclear and fossil fuels which operate 24/7. It is just stupid to say wind costs 60c/kWh and nuclear/coal/gas is 90c/kWh. Anyone who does this does NOT understand the basics of electrical systems.

Yes, wind delivers electricity at 60c/kWh, but ONLY WHEN IT IS BLOWING. Ditto for Solar. So what happens to SA on a windless night? This is the question that these "experts" never answer. If we were to install only wind & solar, we would have to install a duplicate electricity system powered by gas for windless nights. Even if there was no wind for one hour on one night, this system would have to sit there ready to power the country. And that costs lots of money. and that cost must be added to the 60c/kWh that wind supposedly costs.