With traditional technology you need more than 300square foot to support a single person. But with hydroponic + vertical farming you could need a lot less (±1m

With traditional technology you need more than 300square foot to support a single person. But with hydroponic + vertical farming you could need a lot less (±1meter square). You can with today technology have a production (versus traditional farming) gain of : - 2x improvement by controlling light cycle to trick plant into growing faster - 4x improvement by controlling season (in temperate climate you can just growth 6 months a year) - 5x for hydroponic vs. soil growing. - 15x production by stacking cultivation box in top of one other. Using this technique you should be able to attain 600x production over traditional farming for the same surface. Some are already doing it for cabbage in Japan (see Mirai : http://www.fieldrobotics.org/~ssingh/VF/Challenges_in_Vertical_Farming/Schedule_files/SHIMAMURA.pdf http://www.fieldrobotics.org/~ssingh/VF/Challenges_in_Vertic..., who sell itself to GE and who produce 5000kg of cabbage / day in a 1200m2 farm). What make this technology viable now is the availability of cheap and energy efficient LEDs.