The short answer is "No, but it sounds obvious if you don't know much about it." Similar to Solar Roadways - the less you know about solar or roads, the better

The short answer is "No, but it sounds obvious if you don't know much about it." Similar to Solar Roadways - the less you know about solar or roads, the better the idea sounds. The half mile gouge down a road near me from a trailer coming free and riding on the chains until they noticed and pulled over isn't a big deal on asphalt (they'll fill it next time they chipseal it), but it would be millions of dollars worth of damage to solar road tiles. Among many other issues. It's the sort of thing that sounds obvious if you don't know much about the field, and the more you learn, the more things you realize make it a royal pain in the rear to deal with unless the structure was designed with solar in mind - and even then, it's a pain compared to a ground mount array somewhere close. For a big membrane roof, you don't want a ton of penetrations - which means ballasted mounts. Except they weigh a lot, and the roof usually isn't built to support them on top of the required weight for rain/snow/etc. So you need to screw the stuff down to the roof, but now you have tons of penetrations in a membrane roof, and if anyone tells you they can do thousands of those without a single leak, they're full of crap. As I talked about in another comment, you can't just run high voltage DC strings on a roof - you need per panel electronics, so the normal solution is microinverters, but now you're pushing 240V around instead of the 1500V you can run on ground mounted strings, so wiring cost is higher, and Enphase sure makes their money off their handout in the NEC 2017. Reliability of microinverters remains an open question as well. They're not exactly in a good spot for electronics. You've got open area, you've got a high current interconnection, but the rest of it is just a set of thorny problems that makes it quite a bit more expensive than ground mount.