If you get a cold snap like in Texas last year with rolling blackouts it's the perfect way to store the heat you can produce while your electricity is running.

If you get a cold snap like in Texas last year with rolling blackouts it's the perfect way to store the heat you can produce while your electricity is running. When I camp in late fall, early winter I always use a food safe water bottle at night and reuse the water in the morning for coffee or washing up with the added benefit that with a good bottle the water is at least lurk warm.