Sufficient storage capacity to meet overnight needs is going to be a challenge; storage to meet seasonal production variation is impossible. To make solar feasible, we need to build out sufficient generation capacity to meet our needs in winter. Winter, with, perhaps, 9-hours of mostly overcast skies and low angles over the horizon.

Imagine the output of that same system in summer: 15 hours of high-angle daylight and mostly clear skies.

The solar economy needs absurdly massive electrical loads in summer that can be readily shed over winter. We may see fleets of factory ships, loaded with electrolysis equipment, plugging into grids on whichever side of the equator is currently experiencing summer.