Is 24hr Cold Storage Possible Without Constant Power?

In case anyone else is wondering, the spreadsheet gives a total cost for the project of 1,448,100.00, without specifying any units. I think it's safe to assume the price is in Nigerian naira. Given an approximate (Google-provided) exchange rate of 0.0026, this works out to $3,765.06.

There's a great book called "Absolute Zero and the Conquest of Cold" that talks about medieval cooling using salts, and later with ammonia and other chemicals. INAS but it sounded like the key thing was circulation and ventilation. So if somehow you could keep a pump working, by crank, solar, wind, water, you could keep it circulating. Likewise to some type of air displacement.

It's not clear to me what the "Coolbot Pro"[0] is doing. Near as I can tell, it is an aftermarket electronics kit to run a normal window or split system AC unit right above freezing, because otherwise ice forms on the unit and it stops operating until the ice has melted.

[0] https://www.homedepot.com/p/CoolBot-Generation-7-WiFi-Walk-I...

So interesting to hear about this niche problem. I never would have imagined that this would be an issue. When I read the title, I thought.. "duh... just use a backup generator", but the back of the napkin math doesn't seem to work out.

I wonder what the economic impact of such a simple issue is. If you think of food loss from all processors in a whole country, it is definitely huge. What other seemingly small issues actually could have huge impact? What problems in my country are hiding right under my nose?