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this post was submitted on 27 Sep 2024
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Consumer panels are up to 23.5% now, and you can get bifacial cells that can boost that by up to 30%, so up to around 30.55%
Also the light is bouncing around that room, not bouncing off and then back into the sky like it would from the sun, and it's not necessarily all full spectrum, it's the spectrums the plants need, also reducing power compared to what the sun gives it.
Edit: Making shit up now, but what if photosynthesis only needs 30% of the spectrum, and the bifacial panels are 30% it might even be near equal.
https://youtu.be/ISAKc9gpGjw?t=832
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 hitting the plant now of exactly what it needs instead of 1400 that isn't all what it needs.
Also that's 9 years old.