Here in EU the energy prices are separate from distribution grid. In fact distribution grid is forbidden to sell you energy at all by law. So there are months where I pay more for a monthly standing fee for having a connection than I pay for energy. And they charge for energy transmission on top of it.

Anyway, in my country for historical reasons all of the electricity production was in one corner of the country. So if any of the generation moves away from there (and remembering that electricity always takes the shortest possible path [0] from producer to consumer) any new generation in any other part than the original producer lowers the demand on the grid.

[0] or to be more precise the lowest resistance

You're confusing cost with billing structure.

When you go with net metering you still pay a bit, but PG&E sources power at around 10 cents per kwh. The rest of the bill people receive is for infrastructure - around 2/3rds of their bill. They do this to incentivize people to use less electricity.

California's net metering is not sustainable for forever, and you are not paying for the infrastructure you're using. Which I don't have a problem with, it's just something that can't continue forever.