Ok so not only do you want to tell me when I can charge my car but you also want to use my battery (which has a finite ability to discharge and recharge) to charge other peoples cars. Lol.
Imagine if we said that you could only buy gas certain times. And that other people could use some of your gas for their cars if needed. But every time they took your gas your gas tank shrank a little bit. People would go crazy.
As for generation of said power, nuclear is very efficient and safe and can provide power 24/7. But no let’s use big batteries to store the solar power at night. Putting aside that is yet more batteries that need to be created and then recycled. Because that’s so environmentally friendly. And before you say I’m some NIMBY, go ahead, build a nuclear power plant right next door to me, modern designs and systems are VERY safe.