Utah State University Extension
4 HN recommenders · recommended in 9 months, 2017–2025
46:48 · 244K views · Sep 18, 2015
Utah State plant scientist Bruce Bugbee presents his analysis of the energy and environmental costs of vertical and indoor farming. He argues artificial lighting cannot compete with sunlight in fields or greenhouses.
HN uses it as the go-to rebuttal to vertical farming hype, since it gives hard numbers from a leading controlled-environment authority.
12 comments from Hacker News
this video Been sending this video to every charlatan pushing vertical farming for years now. The math is pretty obvious and insurmountable on this one.
Unsurprising. I'm not sure much has changed since this recording of Bruce Bugbee's talk "Why Vertical Farming Won't Save the Planet". There's nothing surprising there but he does give hard numbers to do the math that shows that vertical farming is not as good as its proponents have made it out to be. Solar energy input dwarfs all other energy inputs to agriculture, and the cost to replace one acre of solar energy with electricity comes out to $400,000 per acre (per some unit of days per a growing season). I don't think the economics have tended favorably since. The space needs for solar panels doesn't favor vertical farming either. He also shows the efficiency of modern agriculture, and why vertical farming has a pretty tall order ahead of it to beat the economics of outdoor farming. It's quite unlikely factors have changed enough since to alter his conclusion: only high-value, high-water-content specialty crops might be economically viable. [0] = this video
This article is all over the place and then apparently quotes an academic out of context. The real problem with indoor farming is not setup cost. For the fundamentals: this video ... Bruce Bugbee, Utah State University Department of Plants, Soils and Climate, has studied plant growth in controlled environments for most of his career presents the results of his analysis of the environmental effects of Vertical Farming/Indoor Agriculture (September 2015). With regards to the machinery shown at the top of the article, it is standard industrial automation equipment you can purchase off the shelf, apparently not even hardened or substantially adjusted for outdoor use.
A very informed and informative lecture filled with facts that supports the former argument: this video Myself I am a chemical engineer working in agricultural research. We are working on aquaponics and also test vertical growbeds. Vertical growbeds underperform significantly unless you put expensive light on them. Generating the electricity for light through PV uses about ten times the area compared to using direct sunlight. No way to counter that by using the full spectrum.
Why Vertical Farming Won't Save the Planet [0] is a lecture by the preeminent authority in the field, Bruce Bugbee, Utah State University Department of Plants, Soils and Climate, who has studied plant growth in controlled environments for most of his career and has consulted on all NASA missions with these goals. In particular see 13m26s[1] and 37m17s[2]. [0] this video [1] this video [2] this video