South Africa to get 3 powerships to solve load-shedding problems

This sounds like it could be effective but inefficient-- kind of a brute force method where elegant methods may better serve to solve the problem? 

Barrage mounted power plant is well known technology. Not only conventional steam power plant and gas turbine power plants , but Russia building small nuclear reactors, too {  https://spectrum.ieee.org/energywise/energy/nuclear/russia-launches-floating-nuclear-power-plant }. The main benefits are: Short time for construction (12 months compared to 32 months). Ease of mobility from one place to an other , due to its own substation on deck . 

The main draw back is the high LCOE .