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A new vertical farm, with a footprint of less than an acre, can produce 1.8 million kg of fruit annually. (newatlas.com)

submitted 3 months ago* (last edited 3 months ago) by Lugh to c/futurology

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[–] NotMyOldRedditName@lemmy.world 2 points 3 months ago* (last edited 3 months ago)

You realize that this picture addresses nothing of what I said? It's using 15% when we can get 30%. And still has nothing about what spectrum the plants actually need of what touches them.

Edit: Also a quick search showed 2.9umol/j leds now, and maybe we have higher, so that's up to 870 (3.5x more than image or 62.14% of the sun) hitting the plant now of exactly what it needs instead of 1400 that isn't all what it needs.

Edit: another article from 2017 says the theoretical maximum for LEDs is 4.9-5.1 and we should reach 3.5 within a decade (2027). Also I think I didn't understand the measurement and the 1400 from the sun is the 1400 it needs, but I'm not completely sure.

Also that's 9 years old,