alt Hacker NewsAlso the sewer system backs up after about a week because the pumping and lift stations need power to operate.
The water system shuts down because the tanks aren't reserve supply they're pressure support.
And solar plus storage will keep you running for maybe a week if you're conservative and mostly don't use anything...which doesn't help you if it's months till replacement.
solar + storage + water sheath fireplace can run pretty much till you run out of wood.
But yes, unless you spend serious money (own sewer, water from underground etc), it's basically solution for "the power pole is down", not any grid wide problems.