From what I know there are many many many such projects in the permit phase in Germany, all of them run on capitalist interest without state funding. The only thing between now and them getting build is our government which seems to prefer a 180° turn into the fossil age.

That's outdated information, solar + batteries already reached parity in cost with nuclear and continue to get cheaper

Not enough to reduce the benefits to zero and that's all we need. As improvements come in you can upgrade the batteries over time and get better and better margins. But the system is already good enough for deployment.