I've done calculations before where vegetables come out to cost between $0.30 and $0.60 per pound, so it would be profitable with current tech. However, I beli

I've done calculations before where vegetables come out to cost between $0.30 and $0.60 per pound, so it would be profitable with current tech. However, I believe the future is in rooftop greenhouses with a transparent solar cell film covering, where the solar cells absorb in the green frequencies not needed for the plants.