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Major Power Outage Events From 2000 to 2023
Power outages affecting Arizona and at least 50,000 customers
| Date | Area Affected | Event Type | Number of Customers Affected |
|---|---|---|---|
| 04/25/2019 | Arizona | Generation Inadequacy | 51366 |
| 07/30/2018 | Arizona | Severe Weather | 82000 |
| 09/08/2011 | Arizona, California | Transmission/Distribution Interruption; Load Shed; Generation Inadequacy | 2000000 |
| 06/30/2011 | Arizona | Major System Interruption/Load Shed | 160000 |
| 02/02/2011 | Arizona | Generation Inadequacy/Load Shed | 69000 |
| 12/08/2009 | Arizona | Severe Weather | 140000 |
| 06/29/2007 | Arizona | Loss Of Load | 98700 |
| 07/28/2003 | Arizona | Breaker Closed | 90000 |
Data Source: U.S. Department of Energy
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