When the power goes out, so does most Americans' way to cook and preserve foods. You may have a gas stove, but very few people have gas refrigerators.
Fortunately, most power outages are short-term, and in the interim, your fridges and freezers effectively become giant coolers. The insulation found in these miracles of modern convenience can give you a day to keep cool food cool. Just remember not to open the fridge often. And a fuly stocked fridge and freezer will stay colder, longer.
On day one of a powerless period, it's time to cook all that frozen food. And while your electric oven might be down, maybe you've got a propane or charcoal grill? Or a portable camp stove? Any of these options will allow you to keep eating even during a short term power outage. But it's not just meat and vegetables you need to keep in your fridge--there's also bread.
While modern bread might not taste so good once frozen, if you keep a loaf or two in your freezer, it will significantly extend the shelf life. Once the power fails, bread in the freezer can thaw out safely. Then it can be moved to a bread box or used. By keeping bread in the freezer, you've given yourself the ability to make sandwiches without heading to market for a while. Or you can break out a batch of biscuits, dinner rolls, or even some french toast.