The past weekend on my way to Uitenhage ive noticed simular solar powered geysers installed on RDP housing in the area of  Kwadwesi next to the Uitehage Road.

I've also noted that some of the houses have burned down aswell as some roofs that colapsed.

Somehow this just does not seem like a propper option to save electricity for the area as these geysers are seriously expensive. 

Would these provide a solution to the reason i'ts been installed for in the first place or better would they last long enough?