One thing we never hear about WRT solar is the constant tending the solar panels require.
The roof panels must be kept clear of dirt & debris.
Hail storms are lethal.
So, a salesman convinces you solar will save you money.
Now you’re 80 years old, climbing a ladder every week
to clean your solar panels.
Or paying someone to do it.
A guy once tried to sell me a composting toilet. Supposedly saves water. Needs a tractor to clean it & a pit FAR from your house & water well to dump the stuff.
Maybe if they’re on a flat roof, but with my very tall sloping roof I just use a garden hose with a power wash wand to make a high enough water arc to rinse the dust off the embedded solar panels two or three times per year outside of the rainy season, with both feet on the ground.