Hi Eugene
I have just finished my Solar PV installation, the "sparky" came around on Tuesday to replace my old DB with a new one, as my luck would have it we will now have a week of rain...
Worth or not is a different for each of us, it depends on ....and I hate to say it... what you want to spend..
I have been fiddling with solar for about 4 years now, it started as a hobby fiddle around thing but became more real once load shedding hit us. Initially i just had PV panels, a charge controller and LED lights, then I modified an old UPS to give me AC for the load shedding periods. That became a mess with extension leads everywhere for 2 hours while Eskom did their thing.
Towards the end of last year I started looking for a better solution, sadly everything in South Africa was just too expensive, ironically enough the place I had been buying my solar stuff was called "sustainable" but their pricing made solar very un-"sustainable".
If you speak to a solution provider and they will sell you a solution based on some wild idea of 3 days