Those flexible panels you mentioned are around 17% efficient and 50-100W/kg. Cells bonded to a fiberglass structure you're making anyway go around 200W/kg 5% e

Those flexible panels you mentioned are around 17% efficient and 50-100W/kg. Cells bonded to a fiberglass structure you're making anyway go around 200W/kg 5% efficient cells only make sense if applying them is about the same cost as paint and in applications like highway barriers or walls.