County annual report · FIPS 04027
2021 Yuma County, AZ Power Outage Report
In 2021, customers in Yuma County, AZ went without power for an average of 1.0 hours, a total of 104K customer-hours (Arizona average 1.9 hours). That ranks 12th worst of 13 Arizona counties and 2679th of 2,974 nationally.
Compared with AZ, the US and 2020
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Yuma County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2021 14:15 | August 29, 2021 15:30 | 1h 15m | 6,291 | 6,832 |
| 2 | August 28, 2021 16:15 | August 28, 2021 17:45 | 1h 30m | 5,785 | 7,264 |
| 3 | November 9, 2021 10:45 | November 9, 2021 20:15 | 9h 30m | 2,788 | 4,288 |
| 4 | January 20, 2021 08:30 | January 20, 2021 20:45 | 12h 15m | 2,713 | 13K |
| 5 | June 4, 2021 06:15 | June 4, 2021 16:00 | 9h 45m | 2,327 | 4,488 |
| 6 | June 19, 2021 18:30 | June 20, 2021 05:15 | 10h 45m | 2,055 | 1,251 |
| 7 | September 14, 2021 02:00 | September 14, 2021 08:15 | 6h 15m | 2,019 | 1,849 |
| 8 | July 29, 2021 02:45 | July 29, 2021 05:15 | 2h 30m | 2,017 | 2,272 |
| 9 | March 11, 2021 03:45 | March 11, 2021 05:30 | 1h 45m | 1,910 | 1,163 |
| 10 | June 19, 2021 03:30 | June 19, 2021 09:45 | 6h 15m | 1,589 | 2,437 |
Outage episodes by size in 2021: 57 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 2021, 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 | 2021 | 1.8 hrs | 1.02 | 87 min | 0.89 |
| 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 91% of Arizona's customers in 2021; 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, 2021, 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/2021/arizona/yuma-county