I still think it's work while, if you feed enough back that you have a zero bill at the end of the month, then basically you'll only pay R400 a month flat fee.
From the article.
"Money doesn’t change hands, as the city purchases by credit. As my metre ticks over from the power the PV panels generates, I’m building up credits at a rate of 56c a kilowatt hour. That is the price the city buys power from Eskom."
Does this mean that the credits will offset the service charge.
“And when we need power at night, then we import electricity from the city and we get it at a 42 percent discount. From a business point of view it is a remarkable win-win situation.”
When they use more that they produce they are getting 42% discount