In the global era of the 4^th industrial revolution, Africa remains a dark continent. Sub Saharan Africa is the largest area in the current world without adequate electricity resources to power national economies. The ability to increase the electrical energy supply is constrained by the need for low carbon generation and the very limited size of the current grids.  While renewable energy may be seen as potential approach this is constrained by the need for either bulk electricity storage of backup dispatchable generation.  While this problem could be addressed by nuclear power this has only been applied in South Africa to date.  It has been possible in South Africa because of the large, integrated grid which allows for the installation of 1000MWe class units.  The other national grids in Sub Saharan Africa are far too small to accept such large units due to stability concerns.  In the last 15 years there has been the development of Small Modular Reactors (SMR) in the range of 5 - 300MWe which would be able to be included in virtually all the national grids in the region.  While the actual deployment of SMRs is only just starting in the world (with units under construction in China, Russia and Argentina) the technology is commercially available to provide dispatchable, economic electricity for each of the countries in Sub Saharan Africa. This paper briefly unpacks the understanding of costs to promote a nuclear investment.