Solar panels == shade. Any companies deploying solar in this manner (parking lots, pedestrian trails, bus benches, etc..)
Yes, many companies are doing this in their parking lots, even some govt buildings do this. My local library has panels setup over part of their parking lot for instance.
I looked once into solar covers for EV charging spots and it would provide like 5% of energy, not worth the hassle.
For parking the convenience is definitely worth it, but economically I don't think supermarkets care that much.