I've read a few times vertical farms use LED that only emit very specific wavelengths. The solar panel on the roof would capture energy on spectrum unused by pl

I've read a few times vertical farms use LED that only emit very specific wavelengths. The solar panel on the roof would capture energy on spectrum unused by plants, making the sun light => electric energy => LED light thingy not as bad as it seems intuitively. Is that possible? Though i'd guess semi transparent solar panels above fields capturing light plants wouldn't use could be even more efficient, if it will ever exist.