If you have been without power for more than several days, make sure to protect your household appliances.  National Grid is recommending that, if possible,  turn off your main breaker.   If you can’t, you should unplug computers,  tv’s  and all electrical appliances to avoid a surge when the power is restored.   Please remember to take appropriate safety precautions with generators and alternate heat sources.  Safety comes first:  generators must always be kept outside, propane and other space heaters need a lot of ventilation and cooking stoves should never be used as a heating source!