Didn't China have a community use lots of solar and they ended up with such a glut of excess power that they didn't know what to do with it?
All communities should have that. Electricity should be free and it would be plausible to make it free. Except for maintenance costs, but that would be peanuts compared to what we pay now.
Would it really be peanuts? Solar panel manufacture isn't exactly cheap, nor entirely sustainable (see, for instance, the black market for sand; and economics/politics over lithium mining). Solar panels also degrade; new technology replaces old and has to be paid for and made and installed; the infrastructure tying it all together isn't free either...
I feel like solar power, for all its excellence, is not as simple as upgrade as my rts-/tycoon-/sim-gamer's mind thinks it should be.
Agreed, but there's a real cost involved and a real cost analysis to do. Like with the question of people upgrading to more efficient cars (and scrapping the old) or running the old for longer to minimise car manufacture.