You may be interested to know about Costas Group in Australia. They have gone the high tech route, cramming every bit of productive technology into their green

You may be interested to know about Costas Group in Australia. They have gone the high tech route, cramming every bit of productive technology into their greenhouses. They are an established company listed on Australia's stock exchange (ASX:CGC), so can be taken to have proved the viability of such technology. I gather their share price and the size of their profit is a bit of a roller coaster ride, but they do make a profit each year. They mention yields of 70kg/m^2/year (=50000kg/day from 65 acres). I assume that's per square metre of greenhouse and not per square meter of growing bed. https://thefarmermagazine.com.au/the-costa-group-is-a-runaway-success/ https://thefarmermagazine.com.au/the-costa-group-is-a-runawa... https://www.tradefarmmachinery.com.au/features/1408/costa-group-blush-operation-a-technology-hot-house https://www.tradefarmmachinery.com.au/features/1408/costa-gr... Edit: Article also mentions a 100kg/m^2/year target.