County annual report · FIPS 04023
2023 Santa Cruz County, AZ Power Outage Report
In 2023, customers in Santa Cruz County, AZ went without power for an average of 145.5 hours, a total of 195K customer-hours (Arizona average 2.1 hours). That ranks 1st worst of 14 Arizona counties and 13th of 2,977 nationally.
Compared with AZ, the US and 2022
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Santa Cruz County, 2023
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 1, 2023 11:15 | February 1, 2023 23:00 | 11h 45m | 19,353 | 179K |
| 2 | March 2, 2023 08:15 | March 2, 2023 09:00 | 45m | 1,752 | 1,314 |
| 3 | October 23, 2023 12:30 | October 23, 2023 17:30 | 5h | 1,627 | 4,270 |
| 4 | May 31, 2023 16:15 | May 31, 2023 18:00 | 1h 45m | 1,150 | 2,013 |
| 5 | August 21, 2023 23:45 | August 22, 2023 01:00 | 1h 15m | 1,117 | 592 |
| 6 | December 13, 2023 21:15 | December 13, 2023 21:45 | 30m | 1,086 | 543 |
| 7 | July 25, 2023 18:00 | July 26, 2023 16:00 | 22h | 1,077 | 2,084 |
| 8 | July 13, 2023 20:45 | July 13, 2023 22:30 | 1h 45m | 822 | 677 |
| 9 | July 8, 2023 13:30 | July 8, 2023 16:00 | 2h 30m | 804 | 1,225 |
| 10 | July 22, 2023 00:45 | July 22, 2023 01:45 | 1h | 235 | 235 |
Outage episodes by size in 2023: 15 reached 100+ customers, 7 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 2023, 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 | 2023 | 1.6 hrs | 0.88 | 82 min | 0.81 |
| Sulphur Springs Valley E C Inc | 2023 | 2.3 hrs | 1.13 | 1.5 hrs | 0.81 |
| Trico Electric Cooperative Inc | 2023 | 4.0 hrs | 1.17 | 82 min | 0.65 |
| UNS Electric, Inc | 2023 | 2.7 hrs | 0.78 | 44 min | 0.58 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Arizona's customers in 2023; 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, 2023, 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/2023/arizona/santa-cruz-county