My generator holds 2.5 gallons and runs a bit over 24 hours, so that's about right, but I generally have a 15 gallon tank in the shed. That generator can power

My generator holds 2.5 gallons and runs a bit over 24 hours, so that's about right, but I generally have a 15 gallon tank in the shed. That generator can power the A/C, fridge, everything, without having to open it and let cold air out and transfer items. Power outages typically aren't more than one day, and dry ice is not going to help you for those outages. I don't have any dry ice suppliers nearby (no the Walmart doesn't stock it), it's not a low-tech solution. The low tech solution would be a bigger gas canister. 2 gallons a day is not bad at all. In an apartment building or something I can certain see the use case for dry ice though.