Driessen has some good points in many of his columns but he has an unreasonable hatred of renewables. Africa has vast amounts of land, mines and materials. They would just need some factories to build the panels. Eventually all of Africa will have panels creating solar fuels, that solve the storage problem. Energy transmission would be through pipelines and fuel trucks.
That's somewhat in the future. Right now they could cover useless areas in panels that would provide electricity on a fairly predictable basis especially in the dry season. That would provide electricity for cooking for a predictable amount of time each day. They would need some grid or storage to smooth the power delivery for intermittent cooking use, but not a lot. They would not need a billion panels for a billion people, but they would need a lot, probably 100 million or so.
The link he provides ("no single solution") suggests nuclear power and I agree with that and all other power sources. But I will not dismiss solar, it is the future.
And always will be.