A recent article in Engineering News argued that wind and solar could provide the bulk of South Africa’s power at the least cost. Dr Tobias Bischof-Niemz argued that building 22 GW of wind and solar capacity and 8 GW of “backup” (in the form of coal and/or gas) was the sensible solution to supplying a reliable 8 GW of electrical power to South Africa. Apparently his argument is that the amount of money saved on fuel will outweigh the cost of such extreme overbuilding.

Having seen actual results of such folly based on computer modelling and other types of simulations, one can be forgiven for being skeptical of such claims.