It makes a lot of sense. Solar panels are getting affordable now. I see so many houses built hot climates that always makes me wonder how much energy these houses can harvest if all of them had solar panels on them.
I have solar PV on my roof and it makes no direct difference to the heating required. Except that I have a little generated energy that provides some warming inside from the appliances that it powers.
Is it a meaningful difference, I am not sure. However, it is only fair to count the impact on both seasons. Heating costs are significantly higher than cooling (larger absolute temperate delta required to go from 30f to 70f than 90f to 70f)