I suspect it is for the reason I will not install roof-mounted solar panels.
Solar panels mean additional holes/attachment points that may compromise the roof’s waterproof integrity.
Outside of insurance, the panels must be removed prior to installation of new shingles every 20 years or so.
I’ve thought about installing solar over a patio pergola. Or maybe a covered driveway.I would never put in on my house or garage roof.
And no battery storage. Just feed it into the grid for credit from the power company.