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Largest Farm to Grow Crops Under Solar Panels Proves To Be A Bumper Crop For Agrivoltaic Land Use
(site.extension.uga.edu)
This is a most excellent place for technology news and articles.
Not more efficient use of Gravel. Unless the person's government requires water-barriers/floodwalls on fields for some reason. But yeah, indoor is great, I've personally been experimenting with bulbs in rock wool. They don't seem as likely to bloom on the first cycle, but otherwise they've been thriving.