A Boring Dystopia

So in theory a baseline maintenance fee could solve this. You just make it so the metered charge counts against that fee until it's covered, so the people who don't have alternate sources of electricity aren't affected.

I think the "capitalism" part comes around because most electric grids (in the US) are privately owned and actively try to turn a profit. For those companies, the fact that some people use solar panels will just become an excuse to charge everyone a fee.