However, the still to be resolved question, when it comes to dependency on wind and solar, is what happens on a calm, overcast day(s) commercial electric generators, are still working, inputing to the grid, we still have to have generating capacity, that covers 100% of requirements, even if in a prefect situation where, no power is taken from the grid
Solar panels, comprising solar cells connected in series, cannot tolerate unequal lighting...so in the case where, a road was partially in the shade, then some mechanism has to be developed to control the shaded cells
Much the same applies to a parking lot...cars would shade the cells, and this, under current technology, would be a problem..
You make your own petrol?
Schottky diodes. They are used in the panel circuits to help with the problem of shaded panels.
Your panels probably already these for shading within individual panel, but more may be needed for the shading from panel to panel within an array.
Not a perfect solution, but they may help in your situation.