It very much is the municipalities fault, but its incorrect for Andre to claim we aren't paying too much for electricity if he is just blithely ignoring that the vast majority of residential (at least) consumer are paying significantly more than their claimed average.
I think his statement should be taken within the context of what he can control (i.e. the price at which Eskom is able to provide electricity). That price isn't all that unreasonable IMO.
It could be even lower without the gross incompetence, staffing issues and corruption, but it certainly could be much worse.
EDIT: The article also clearly states he's talking about the industrial and commercial rates:
“In terms of electricity pricing, South Africa’s commercial and industrial electricity tariffs are competitive by international standards,”
I don't think he's wrong.
EDIT: OK read the last part of the article, he does mention average residential prices. It's still not his problem that municipal rates are on a 100% markup. Say what you want about Eskom but if we're honest, it does indeed provide electricity at an affordable rate.