Hmm, nice thing from an experimental point of view, but I very much doubt there will be any practical use of this tech anytime soon unless one happens to have s

Hmm, nice thing from an experimental point of view, but I very much doubt there will be any practical use of this tech anytime soon unless one happens to have supply of free energy. They say>grow food with 95% less water and 97% less land What about energy, and other inputs(like fertiliser)? I bet just hauling food from wherever it grows well will be much cheaper than growing it indoors for a long time. Unless... Someone finds a way to harness sun's energy in a much more efficient way than plants do it. I read somewhere direct efficiency of most grain crops in sun energy conversion into calories is 1%. If we could capture this light with 25% efficiency (doable), then we illuminate plant with efficiency of 80% in some way by giving them only the right wavelengths so their conversion of said light into calories is (a lot)higher than 5% we may be onto something there. Until then... Not really.