Valdez-CordovaPower Outage History
2017–2023 · Alaska
Top 20% most reliable nationally — infrequent, short outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 19, 2019 | 4 hrs | 152 (3%) | Unnamed event |
| Jul 21, 2020 | 6 hrs | 81 (1%) | Unnamed event |
| Oct 23, 2018 | <1 hr | 79 (1%) | Unnamed event |
| Aug 7, 2018 | <1 hr | 79 (1%) | Unnamed event |
| Jun 11, 2019 | <1 hr | 78 (1%) | Unnamed event |
Over the 7 years from 2017 to 2023, Valdez-Cordova recorded 15 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Valdez-Cordova started September 19, 2019, lasting 4 hours and leaving up to 152 customers without power (3% of the county) at its peak.
October has historically been the worst month for outages in Valdez-Cordova, with 3 events recorded during that month across the dataset.
Based on this history, Valdez-Cordova earns a Reliability Grade of A, placing it in the 99th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Valdez-Cordova's outage profile
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Outage-prep kit
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Similar counties in Alaska
Counties with the closest reliability grade and national percentile to Valdez-Cordova.
| County | Grade | National percentile |
|---|---|---|
| Yukon-Koyukuk | A | 88th |
| Anchorage | C | 59th |
| Fairbanks North Star | D | 33rd |
| Kenai Peninsula | D | 27th |
| Matanuska-Susitna | D | 23rd |
Most reliable counties in Alaska
The top 3 counties in Alaska by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Valdez-Cordova | A | 99th |
| Yukon-Koyukuk | A | 88th |
| Anchorage | C | 59th |
Least reliable counties in Alaska
The bottom 3 counties in Alaska by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Denali | F | 14th |
| Southeast Fairbanks | D | 23rd |
| Matanuska-Susitna | D | 23rd |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Valdez-Cordova?
Between 2017 and 2023, Valdez-Cordova recorded 15 outage events, averaging 2.0 hours each.
What is Valdez-Cordova's reliability grade?
Valdez-Cordova has a Reliability Grade of A, in the 99th national percentile.
What was the worst power outage in Valdez-Cordova?
The worst outage on record started September 19, 2019, lasting 4 hours and affecting up to 152 customers.