Apologies if I already posted this: Some time around 1980 IIRC, I lived through a four-day power outage during and after a blizzard in winter in rural North Dakota. Nearest neighbor 3/4 of a mile away. No way to leave the farmstead in the blizzard. I had heat (a non-electric LP-gas parlor heater in the living room that heated the whole house) and plenty of emergency drinking water and a gas stove, but no running water or electricity. I had food and could cook but could not wash pots, dishes, or utensils or flush the toilet. Poop went outside in plastic bags. All the farmers had emergency generators but I could not afford one. I was poor in those days. I did have a propane lantern for light.
If I had had rural water I'd have been fine. But I had a well, and without electricity there was no running water. I'll tell you, that running water is far more important than electricity. I bought that house after the deadline to get on the rural water system, and to get on after the fact would have cost several thousand dollars or more, so I was stuck with the well.
Once the blizzard ended and the roads were plowed the utility company got the power on pretty fast. But that was four days. We hear about disasters where it's weeks or months without power or potable water. We're very lucky. But solar power and battery backup is something I'm very thankful for. I'm going to get a drink of water now.