If your house is the only one without power, check your fuse box or circuit breaker panel.
Turn off large appliances before replacing fuses or resetting circuits.
If power is out in the neighborhood, disconnect all electrical heaters and appliances to reduce the initial demand and protect the motors from possible low voltage damage.
If you leave home, turn off or unplug heat producing appliances.
Unplug computers and other voltage sensitive equipment to protect them against possible surges when power is restored.
Conserve water, especially if you are on a well.
Keep doors, windows and draperies closed to retain heat in your home.
Keep refrigerator and freezer doors closed. If the door remains closed, a fully Reloaded freezer can keep foods frozen for two days.
Be extremely careful of fire hazards caused by candles or other flammable light sources.