Union CountyPower Outage History
2015–2025 · New Mexico
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 21, 2022 | 2 hrs | 1,451 (99%) | Drought |
| Apr 12, 2022 | 2 hrs | 1,450 (99%) | Drought |
| Jun 3, 2020 | 5 hrs | 1,449 (99%) | Drought |
| Jun 4, 2020 | 1 hrs | 1,448 (99%) | Drought |
| May 18, 2022 | 10 hrs | 1,448 (99%) | Drought |
Over the 11 years from 2015 to 2025, Union County recorded 63 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Union County started March 21, 2022 (Drought), lasting 2 hours and leaving up to 1,451 customers without power (99% of the county) at its peak.
March has historically been the worst month for outages in Union County, with 12 events recorded during that month across the dataset.
Based on this history, Union County earns a Reliability Grade of C, placing it in the 55th percentile nationally for grid reliability (higher percentile = more reliable).
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Read our mission →Similar counties in New Mexico
Counties with the closest reliability grade and national percentile to Union County.
| County | Grade | National percentile |
|---|---|---|
| Lincoln County | C | 55th |
| Grant County | C | 59th |
| Guadalupe County | C | 48th |
| Doña Ana County | B | 70th |
| Santa Fe County | B | 71st |
Most reliable counties in New Mexico
The top 3 counties in New Mexico by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Sierra County | A | 99th |
| Socorro County | A | 98th |
| McKinley County | A | 97th |
Least reliable counties in New Mexico
The bottom 3 counties in New Mexico by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Rio Arriba County | D | 22nd |
| Torrance County | D | 36th |
| Catron County | D | 37th |
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 Union County?
Between 2015 and 2025, Union County recorded 63 outage events, averaging 1.9 hours each.
What is Union County's reliability grade?
Union County has a Reliability Grade of C, in the 55th national percentile.
What was the worst power outage in Union County?
The worst outage on record started March 21, 2022 (Drought), lasting 2 hours and affecting up to 1,451 customers.