Actually, that's one of the reasons I have a laptop rather than a desktop computer: the laptop will keep running even as all the peripherals die, so I can shut down with care.
But the power dying brought up another problem: calling Edison International (used to be Southern California Edison). Here's the catch: they have those classy 800 numbers inviting you to call. THEY HAVE NO OTHER TELEPHONE NUMBERS. What does that matter? Well, if you've moved from out of area, and didn't get local telephone service because it would be another bill to pay on top of the cell phone you need these days, you won't be able to call them. The telephone company will just say, "Sorry, this number is not available in your area." You won't get through. 411 can't do it for you.
So you hope one of your neighbors has a phone installed, or doesn't have your problem. And think about gatekeepers. Unavailability. Community Service.