County annual report · FIPS 04023
2022 Santa Cruz County, AZ Power Outage Report
In 2022, customers in Santa Cruz County, AZ went without power for an average of 34.4 hours, a total of 46K customer-hours (Arizona average 2.0 hours). That ranks 1st worst of 13 Arizona counties and 139th of 2,976 nationally.
Compared with AZ, the US and 2021
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Santa Cruz County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 21, 2022 06:45 | February 21, 2022 07:45 | 1h | 18,825 | 12K |
| 2 | September 26, 2022 22:45 | September 27, 2022 00:45 | 2h | 3,843 | 2,207 |
| 3 | September 15, 2022 18:15 | September 15, 2022 20:15 | 2h | 3,537 | 6,085 |
| 4 | August 1, 2022 02:45 | August 1, 2022 08:00 | 5h 15m | 2,799 | 6,415 |
| 5 | March 21, 2022 09:45 | March 21, 2022 11:30 | 1h 45m | 2,052 | 2,194 |
| 6 | November 20, 2022 03:15 | November 20, 2022 03:30 | 15m | 1,050 | 263 |
| 7 | October 7, 2022 20:15 | October 7, 2022 20:30 | 15m | 1,046 | 262 |
| 8 | July 30, 2022 23:30 | July 31, 2022 04:00 | 4h 30m | 1,033 | 1,454 |
| 9 | August 2, 2022 00:45 | August 2, 2022 01:45 | 1h | 1,030 | 584 |
| 10 | February 24, 2022 06:30 | February 24, 2022 07:45 | 1h 15m | 1,026 | 1,283 |
Outage episodes by size in 2022: 36 reached 100+ customers, 11 reached 1,000+ customers, 1 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Santa Cruz County reported on EIA Form 861 for 2022, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Arizona Public Service Co | 2022 | 2.3 hrs | 1.04 | 84 min | 0.89 |
| Sulphur Springs Valley E C Inc | 2022 | 1.6 hrs | 0.60 | 55 min | 0.51 |
| Trico Electric Cooperative Inc | 2022 | 71 min | 0.62 | 48 min | 0.38 |
| UNS Electric, Inc | 2022 | 2.6 hrs | 1.32 | 77 min | 1.24 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of Arizona's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,340 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Santa Cruz County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Santa Cruz County, AZ annual power outage report, 2022, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2022/arizona/santa-cruz-county