County annual report · FIPS 04023
2025 Santa Cruz County, AZ Power Outage Report
In 2025, customers in Santa Cruz County, AZ went without power for an average of 28.1 hours, a total of 38K customer-hours (Arizona average 1.6 hours). That ranks 1st worst of 15 Arizona counties and 207th of 3,000 nationally.
Compared with AZ, the US and 2024
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Santa Cruz County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 2, 2025 04:15 | June 3, 2025 00:00 | 19h 45m | 2,487 | 16K |
| 2 | July 31, 2025 23:15 | July 31, 2025 23:45 | 30m | 2,218 | 1,109 |
| 3 | June 2, 2025 00:00 | June 2, 2025 01:30 | 1h 30m | 2,217 | 1,181 |
| 4 | December 3, 2025 23:30 | December 4, 2025 00:15 | 45m | 2,077 | 1,174 |
| 5 | August 13, 2025 00:15 | August 13, 2025 03:30 | 3h 15m | 2,004 | 1,444 |
| 6 | September 26, 2025 11:45 | September 26, 2025 12:00 | 15m | 2,003 | 501 |
| 7 | October 22, 2025 13:15 | October 22, 2025 14:45 | 1h 30m | 1,865 | 1,600 |
| 8 | September 22, 2025 18:45 | September 22, 2025 19:30 | 45m | 1,854 | 1,391 |
| 9 | July 2, 2025 21:30 | July 2, 2025 22:30 | 1h | 1,820 | 1,820 |
| 10 | April 5, 2025 00:30 | April 5, 2025 02:15 | 1h 45m | 1,761 | 1,048 |
Outage episodes by size in 2025: 35 reached 100+ customers, 11 reached 1,000+ customers, 0 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 2025, 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 | 2024 | 87 min | 0.93 | 81 min | 0.88 |
| Sulphur Springs Valley E C Inc | 2024 | 2.3 hrs | 1.32 | 2.1 hrs | 0.92 |
| Trico Electric Cooperative Inc | 2024 | 2.5 hrs | 1.03 | 83 min | 0.68 |
| UNS Electric, Inc | 2024 | 72 min | 0.79 | 60 min | 0.69 |
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 2025; 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, 2025, 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/2025/arizona/santa-cruz-county