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This is a list of notable wide-scale power outages. To be included, the power outage must conform to all of the following criteria:
The outage must not be planned by the service provider.
The outage must affect at least 1,000 people.
The outage must last at least one hour.
There must be at least 1,000,000 person-hours of disruption.
For example:
1,000 people affected for 1,000 hours (42 days) or more would be included; fewer than 1,000 people would not be, regardless of duration.
One million people affected for a minimum of one hour would be included; if the duration were less than one hour, it would not, regardless of number of people.
10,000 people affected for 100 hours, or 100,000 for 10 hours would be included.
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