County annual report · FIPS 04023
2017 Santa Cruz County, AZ Power Outage Report
In 2017, customers in Santa Cruz County, AZ went without power for an average of 10.5 hours, a total of 14K customer-hours (Arizona average 1.1 hours). That ranks 1st worst of 13 Arizona counties and 516th of 2,786 nationally.
Compared with AZ, the US and 2016
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Santa Cruz County, 2017
The 8 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 19, 2017 05:45 | August 19, 2017 08:30 | 2h 45m | 4,492 | 11K |
| 2 | August 10, 2017 22:45 | August 11, 2017 00:45 | 2h | 1,780 | 1,617 |
| 3 | August 14, 2017 23:45 | August 15, 2017 00:30 | 45m | 402 | 212 |
| 4 | August 9, 2017 23:00 | August 9, 2017 23:15 | 15m | 263 | 66 |
| 5 | August 23, 2017 21:45 | August 23, 2017 23:00 | 1h 15m | 185 | 175 |
| 6 | September 25, 2017 10:00 | September 25, 2017 11:30 | 1h 30m | 185 | 278 |
| 7 | October 31, 2017 04:00 | October 31, 2017 05:15 | 1h 15m | 183 | 229 |
| 8 | August 10, 2017 00:15 | August 10, 2017 05:00 | 4h 45m | 69 | 313 |
Outage episodes by size in 2017: 7 reached 100+ customers, 2 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 2017, 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 | 2017 | 1.9 hrs | 0.91 | 75 min | 0.75 |
| Sulphur Springs Valley E C Inc | 2017 | 83 min | 1.19 | 69 min | 0.85 |
| Trico Electric Cooperative Inc | 2017 | 2.0 hrs | 0.76 | 47 min | 0.38 |
| UNS Electric, Inc | 2017 | 3.3 hrs | 1.65 | 1.5 hrs | 0.48 |
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 2017; 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, 2017, 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/2017/arizona/santa-cruz-county