We had a blackout yesterday-- several hours of no electricity, and because of no electricity, some areas also had water shortages and/or water quality issues (pumps couldn't work). A few restaurants and gas stations had generators, and were open for business, but Southern Calif from Orange County down into Mexico and from the Pacific Ocean to Yuma AZ pretty much had to shut down.
Our family did fine (except for computer withdrawal symptoms)-- had enough "ready to eat" food for dinner without cooking or opening the refrigerator, a "wind up" radio, and enough light we didn't stumble around in the dark. It was nice to see the stars without streetlights drowning them out.... Power was restored about 2AM, although some transmitters, etc. probably won't be "on line" for a couple of days, and the "grid" is still considered "fragile".
We had just finished getting new gutters and some rain barrels installed-- right before a brief thunderstorm, so we even had water for the garden if we needed to go on water restrictions (as some areas did). Also had just received another food safe water barrel and filled it last weekend, so we were pretty well set for drinking water, too. The 7-11 down the street was doing pretty good business, according to my son, after he came back from walking the dogs; nobody could buy lottery tickets, but obviously were still able to make other purchases, and a couple of patrol cars sitting outside kept things orderly....