August 27 Countywide Power Outage Investigation
Washington City
Summary
An investigation revealed that the August 27 blackout affecting Washington County and northern Arizona was caused by relay protection settings that did not match transformer wiring configurations, causing them to trip prematurely at 240 megawatts instead of 280.
At a glance
- Total mentions
- 1
- Last 30 days
- 1
Discussed at 1 meeting in the last 60 days; most recently Oct 6, 2026.
Impact analysis
Substation failures and equipment damage cost local entities tens of thousands of dollars.
None.
Utility customers across Washington County experiencing service interruptions.
Mentions & discussions (1)
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