To clear some of the your confusion. If they actually did some of what you say. What would stop independent companies from buying generators and setting up shop with out state grid at all. 10K generators in China 5 grand.
Would you think that this idea: a) will be accepted by SGCC and get through the standards committees? b) will be a more economoic way to provide electrical power than as offered by the SGCC power grid, mostly during night time? c) will allow private buyers of EV's to enjoy the subsidies for free battery rental etc... as offered by Hangzhou (see one of my former posts)
Sgcc would have zero to say about running a generator off grid. They are concerned with peak hr charging. The battery farm concept makes it possible to charge any time you choose to throw on the power. I think ( assumption ) there will be many different batteries just like cell phones have and there will be addapters etc. I will go there and see about setting up shop myself for 6 dollars a charge x 100 charges. 600 a day x 365 days in a year. Lets also not forget how much sence this makes in China. Gas is expensive closer to 6 or seven dollars a gallon.
Well I will accept that as a valid question. I would answer that with what I know. There are so many battery makers in China. I dont see how There will be one type of battery. Maybe 50 years from now. But this question would meen the other 50+ ev makers would endure the same issue.