I'm in South Africa if relevant, and range anxiety is being alleviated by competition in the vehicle charging space, and municipal grid charging still comes to about 70% cheaper than fuel.
https://aukehoekstra.substack.com/p/batteries-how-cheap-can-...
https://energynews.biz/catls-19-kwh-sodium-ion-claims-face-r...
https://www.nextbigfuture.com/2025/08/catl-sodium-ion-batter...
The discharge curve is also different than lithium ion, so it's easy to see if you actually have a lithium ion battery or a sodium ion.
It's just one metric.
The less you need the grid - the more expensive is what you will pull from it because the infrastructure costs will be spread on fewer kwh.
100 kWh of energy will last the average US house three days. And when you throw in people's EV batteries too...
1) a big part of your energy bill is "connection charge" or similar. Not related to usage but just to be connected at all.
2) they don't allow disconnection
3) most of what you pay in electricity bills is effectively a tax, not for the actual electricity, and isn't really per-kWh. This is masked by the government loading the grid companies up with debt in the past, getting the money and then "making them independent companies", then voting in a levy on tax.
Note I call this masked because the government can't let these companies succeed (it'd be a political disaster if they make real profits, and they can just raise the levy), and they can't let these companies fail (that would mean no more electricity grid for some regions). So it's a matter of time before the government is forced to buy these companies back and all netted out this will just have been a really expensive loan for the government (that past administrations got to spend, and present (it's already begun) and future administrations have to pay)
In some countries there's already talk of giving the grid company the right to charge a connection charge ... when there's no actual grid connection (in Australia), and there isn't even the theoretical option to deliver electricity to an address. Don't worry, they "have plans" to connect everyone (but some of those plans have been there for 80 years and still aren't implemented. But you'll have to pay for just being in the plan)
So the problem is that the government won't let you save money by lowering your usage from normal levels. That would screw up the government budget.
And all they have to do is make connection charge 90%+ of your bill, with some "free" included electricity and your solar installation no longer saves you money.