County annual report · FIPS 04017
2022 Navajo County, AZ Power Outage Report
In 2022, customers in Navajo County, AZ went without power for an average of 3.2 hours, a total of 271K customer-hours (Arizona average 2.0 hours). That ranks 5th worst of 13 Arizona counties and 1880th of 2,976 nationally.
Compared with AZ, the US and 2021
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Navajo County, 2022
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 11, 2022 21:45 | August 12, 2022 04:00 | 6h 15m | 10,781 | 12K |
| 2 | August 3, 2022 15:15 | August 3, 2022 23:00 | 7h 45m | 10,551 | 2,673 |
| 3 | April 29, 2022 07:15 | April 29, 2022 07:30 | 15m | 5,839 | 1,460 |
| 4 | April 26, 2022 15:15 | April 26, 2022 18:00 | 2h 45m | 5,838 | 1,463 |
| 5 | April 19, 2022 23:30 | April 20, 2022 01:00 | 1h 30m | 5,837 | 2,931 |
| 6 | April 20, 2022 02:15 | April 20, 2022 02:30 | 15m | 5,837 | 1,459 |
| 7 | January 1, 2022 00:00 | February 15, 2022 00:00 | 45d | 4,841 | 61K |
| 8 | June 20, 2022 06:00 | June 21, 2022 02:00 | 20h | 4,756 | 35K |
| 9 | June 17, 2022 18:30 | June 17, 2022 18:45 | 15m | 3,595 | 899 |
| 10 | June 23, 2022 05:00 | June 23, 2022 09:30 | 4h 30m | 3,303 | 4,983 |
Outage episodes by size in 2022: 105 reached 100+ customers, 36 reached 1,000+ customers, 2 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 Navajo County reported on EIA Form 861 for 2022, 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 | 2022 | 2.3 hrs | 1.04 | 84 min | 0.89 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Navajo Tribal Utility Authority | - | - | - | - | - |
| Navopache Electric Coop, Inc | - | - | - | - | - |
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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 84,388 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. Navajo County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Navajo County, AZ annual power outage report, 2022, 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/2022/arizona/navajo-county