Blackouts and power outages can be caused by a variety of factors such as
Fire
Earthquake
Hurrican
Thunderstorm
Tornado
Human Error
High Energy Consumption
Overused Power Grids
Accidents
What does a blackout cost you?
A moderate estimation is that a family of four will spend $800 on food each month, and much of that can be ruined in a prolonged blackout.
Power surges that occur when the power comes back on can damage your most expensive electronics, including big-screen televisions and computer equipment.
Your health may be at risk if you or a family member requires uninterrupted electricity to power a medical device or keep medicine cold.