AM radio stations were largely unaffected, as most of their transmitters were located in either Northern New Jersey (e.g. New York City television and FM radio stations that transmit from the Empire State Building were off the air. The power outage was originally thought to have been caused by an explosion at Con Ed's Waterside power facility on 40th Street and 1st Avenue in Manhattan, but the cause was later suspected to be a result of a fault in a transformer at a substation on 13th Street.
February 7 - United States - On that evening, power in parts of the New York City borough of Manhattan was lost for over four hours. Miami and Fort Lauderdale downtown areas were offline for almost two hours, with other areas dark for much longer periods. The outage affected more than 2 million people, and created a vast traffic jam. August 5 - United States - A 50-mile (80 km) stretch of Florida's Gold Coast was hit with a general power failure after an explosion at the Cutler Ridge facility. Most radio and television stations within the area lost power or lost teletype communications, so people within the blackout area relied on broadcasts from other areas to learn information about the blackout. November 9 - United States and Canada - The Northeast blackout of 1965 affected portions of seven northeastern U.S. This method is a formula that multiplies the number of hours by the population affected, and does not reflect the nominal time in hours that the outages lasted.Ĭhronology 1960–1969 1965 10,000 people affected for 100 hours, or 100,000 for 10 hours would be included.Ģ019 Argentina, Paraguay and Uruguay blackout. 
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.
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. There must be at least 1,000,000 person-hours of disruption. The outage must last at least one hour. The outage must affect at least 1k people. The outage must not be planned by the service provider. To be included, the power outage must conform to all of the following criteria: 
This is a list of notable wide-scale power outages. You can help by adding missing items with reliable sources. This is a dynamic list and may never be able to satisfy particular standards for completeness.
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