We have the power already! In California we currently enjoy the phenomenon of “curtailment” where we can’t use solar power when and where it is produced, so we just disconnect solar panels from the grid. This usually happens in the spring when sun is plentiful and demand is low. If crystalline PV production was collocated with seasonally-curtailed solar power plants, you have a runaway virtuous cycle of zero-carbon energy production.

Of course, you’d have to subsidize it because basic economics won’t make it work.