would be the best solution in purchase price and maintenance costs, because no batteries are installed.
In many countries subsidised - but not in South Africa
Here you rather get punished with a Meter-Fee if you bring your for free generated Solar-Power to the Municipality Grid or it is even vorbidden by Eskom.
Housholds with an usage of up to 500KW/h a month could have 80 to 90% ELECTRICITY for free for the next 20years with an investment of only +/- R60.000. But the Meter-Fee with +/- R340 per month and the little amount you get paid what you generate to the grid makes it not profitable (calculated for 2015)