Here's what to expect when the grid goes down for a week: (h/t to AskAPrepper.com)
A power outage often happens on short notice. The first thing you should do is to find alternative ways of heating your home, especially if you live in colder climates. Lighting and cooking wouldn't be much of a problem, at least for the first few days. Most people keep alternative sources of light at home and many still use gas stoves. And though the power is gone, you can still keep the cold inside your refrigerator and freezer by limiting the number of times you open the door.
You'll likely have a hard time sleeping due to the extreme cold (or heat, if you live in sunnier states). Expect that for the rest of the week. As power outages are usually widespread, authorities will likely suspend classes and most kinds of work. You'll have a lot of time on your hands. That's a good thing because you will encounter all kinds of problems at home on day two. Water coming out of your sink will likely tap out at this point, and you'll have to find other ways of disposing of human waste.
Unless you keep water barrels, you'll have to skip taking a bath to accommodate other things that need water, like washing dishes and whatnot. At this point, the cold in your freezer and fridge would have completely dissipated, and you'll have to cook all frozen goods by the end of the day or tomorrow morning at the latest. (Related: Do you know what to do during a power outage? Here are 5 essential things you need.)
You'll have to find alternative sources of light because your flashlights will likely run out of power by this day. Unfortunately, most stores will be empty of batteries, flashlights and even candles. If you're living in the country or the suburbs, your best bet is to start a fire using firewood. You could always go to the woods and collect some branches or fell a tree yourself. Things are harder if you're living in the city. Explore alternative emergency light sources to light up your house.
Neighbors might come knocking on your door for food, especially if your community is aware that you are a prepper. Remember to keep your prepping ways a secret as you are a prime target during SHTF. If the word ever comes out and your next-door neighbor asks for food, consider giving some of your supplies. Just be sure that your act of kindness will remain just between the two of you. You don't want the whole street rushing to your door.