Imagine if the green roof was further covered a few feet up with a semi-transparent layer of solar cells! The roof would get enough light to stay green and you could also go off grid and live off free electricity. Might work in some areas!
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If there'd be a layer of solar cells, it might have an effect on how much water the roof is getting to keep plants alive.
Thanks, good point! Maybe put spacing between each panel.
Actually, that could work really well. Didn't even think of that.
Hmmm now your thinking!