Santa Cruz CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 1, 2023 | 12 hrs | 19,353 (94%) | Unnamed event |
| Feb 21, 2022 | 1 hrs | 18,825 (91%) | Unnamed event |
| Sep 5, 2020 | <1 hr | 10,152 (49%) | Drought |
| Jun 9, 2016 | <1 hr | 5,308 (26%) | Excessive Heat |
| Jul 22, 2019 | 2 hrs | 4,996 (24%) | Flash Flood |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Santa Cruz County, Arizona that day.
Over the 10 years from 2016 to 2025, Santa Cruz County recorded 436 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Santa Cruz County started February 1, 2023, lasting 12 hours and leaving up to 19,353 customers without power (94% of the county) at its peak.
July has historically been the worst month for outages in Santa Cruz County, with 108 events recorded during that month across the dataset.
Based on this history, Santa Cruz County earns a Reliability Grade of B, placing it in the 75th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Arizona
Counties with the closest reliability grade and national percentile to Santa Cruz County.
| County | Grade | National percentile |
|---|---|---|
| Pinal County | B | 74th |
| Navajo County | B | 72nd |
| Coconino County | A | 86th |
| Pima County | A | 86th |
| Maricopa County | A | 86th |
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 Santa Cruz County?
Between 2016 and 2025, Santa Cruz County recorded 436 outage events, averaging 1.9 hours each.
What is Santa Cruz County's reliability grade?
Santa Cruz County has a Reliability Grade of B, in the 75th national percentile.
What was the worst power outage in Santa Cruz County?
The worst outage on record started February 1, 2023, lasting 12 hours and affecting up to 19,353 customers.