If you look at how a panel is made, a lot of the weight is the plastic backing of the panel, the actual sensitive stuff is very thin. I always wondered 2 things: if a panel can actually replace the fabric/skin of the wing, offsetting some the weight, or if somehow you could order that thin sensitive layer and laminate it with carbon or something, again to have something structural and light sensitive. I also wonder if you can kind of slice the back of a panel to save some weight if you cannot get the raw film from the factory

Apparently, Sunpower have some factory in France but they are very much a global company and got factories all over the world...