The catch with PVs is that they generate less power as the ambient temperature rises.

That means that on the days with the longest sun exposure the panels are putting out less juice per photon.
This is actually good news for Northern latitudes, we're not hamstrung by the high temperatures of our Western deserts.

Coupled with a net Zero home (superinsulation) this is a winning proposition.
If you drive a plug in EV or plug in Hybrid EV, they're brilliant.

For me, just South of Boston, it was more holes in my roof than I want in Hurricane alley.