How do I keep my food from spoiling during a power outage?

Keep refrigerator and freezer doors closed as much as possible.
A closed refrigerator will generally keep food cold for about 4 hours.
A full freezer can keep food frozen for approximately 48 hours (about 24 hours if it is half full).
When in doubt, throw it out. Food that has been above 40°F for more than two hours should generally be discarded.