this post was submitted on 30 Nov 2021
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Asklemmy
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Did you also compare it to broccoli grown in summer and stored in a freezer?
Or for that matter, eating seasonal produce only?
The entire setup of comparing an artificially heated greenhouse in Canada seems specifically designed to make any alternative look good. How about growing produce on the north pole? I am sure the Canadian greenhouse will win against that /s
Freezer might be a viable alternative actually. Especially if you use a heat pump and use the "waste" heat to heat buildings in the winter. Or, even with greenhouses, a ground source heat pump that stores thermal energy in the soil in the summer and extracts it in the winter could potentially also work. Heat pumps can be up to 5x more efficient than resistive electric heat.
The thing is, to my knowledge, the only fresh produce available locally in Quebec in the winter is greenhouse grown because it's literally too cold for any edible plant to grow in the fields. Broccoli isn't special in this regard because nothing would be in season.
To be fair the assignment wasn't really meant to actually inform people what they should do. It was meant to test our ecological impact assessment and data analysis skills that we learned over the term, so they probably did pick a relatively simple example (still with real numbers though).