County annual report · FIPS 04027
2018 Yuma County, AZ Power Outage Report
In 2018, customers in Yuma County, AZ went without power for an average of 1.7 hours, a total of 187K customer-hours (Arizona average 1.9 hours). That ranks 9th worst of 13 Arizona counties and 1986th of 2,798 nationally.
Compared with AZ, the US and 2017
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Yuma County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 9, 2018 06:00 | July 9, 2018 15:30 | 9h 30m | 5,498 | 13K |
| 2 | January 2, 2018 03:30 | January 2, 2018 06:45 | 3h 15m | 4,820 | 7,279 |
| 3 | May 27, 2018 18:45 | May 27, 2018 20:15 | 1h 30m | 4,794 | 4,044 |
| 4 | August 1, 2018 01:30 | August 1, 2018 06:45 | 5h 15m | 3,663 | 11K |
| 5 | October 1, 2018 01:45 | October 1, 2018 20:30 | 18h 45m | 3,598 | 36K |
| 6 | October 9, 2018 20:00 | October 10, 2018 01:00 | 5h | 3,153 | 1,879 |
| 7 | December 7, 2018 00:30 | December 7, 2018 21:45 | 21h 15m | 3,006 | 8,811 |
| 8 | October 2, 2018 01:00 | October 3, 2018 04:30 | 1d 3h | 2,750 | 14K |
| 9 | August 30, 2018 01:30 | August 30, 2018 06:45 | 5h 15m | 2,677 | 3,319 |
| 10 | December 17, 2018 06:30 | December 17, 2018 08:30 | 2h | 2,552 | 3,035 |
Outage episodes by size in 2018: 60 reached 100+ customers, 18 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 Yuma County reported on EIA Form 861 for 2018, 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 | 2018 | 2.6 hrs | 1.08 | 86 min | 0.84 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Wellton-Mohawk Irr & Drain Dist | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 87% of Arizona's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 109,100 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. Yuma County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Yuma County, AZ annual power outage report, 2018, 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/2018/arizona/yuma-county