Multnomah County Power Outage History
2014–2025 · Oregon
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 13, 2021 | 134 hrs | 125,115 (30%) | Blizzard |
| Jan 13, 2024 | 173 hrs | 123,419 (30%) | Blizzard |
| Apr 11, 2022 | 64 hrs | 67,481 (16%) | Unnamed event |
| Sep 8, 2020 | 46 hrs | 53,768 (13%) | Unnamed event |
| Jan 13, 2021 | 71 hrs | 40,015 (10%) | Debris Flow |
Over the 12 years from 2014 to 2025, Multnomah County recorded 2,664 distinct power outage events, averaging 4.4 hours per event.
The single worst outage on record in Multnomah County started February 13, 2021 (Blizzard), lasting 134 hours and leaving up to 125,115 customers without power (30% of the county) at its peak.
July has historically been the worst month for outages in Multnomah County, with 287 events recorded during that month across the dataset.
Based on this history, Multnomah County earns a Reliability Grade of D, placing it in the 29th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Oregon
Counties with the closest reliability grade and national percentile to Multnomah County.
| County | Grade | National percentile |
|---|---|---|
| Yamhill County | D | 32nd |
| Wallowa County | D | 26th |
| Clatsop County | D | 25th |
| Douglas County | D | 35th |
| Polk County | D | 37th |
FAQ
How often does power go out in Multnomah County?
Between 2014 and 2025, Multnomah County recorded 2,664 outage events, averaging 4.4 hours each.
What is Multnomah County's reliability grade?
Multnomah County has a Reliability Grade of D, in the 29th national percentile.
What was the worst power outage in Multnomah County?
The worst outage on record started February 13, 2021 (Blizzard), lasting 134 hours and affecting up to 125,115 customers.