County annual report · FIPS 04001
2021 Apache County, AZ Power Outage Report
In 2021, customers in Apache County, AZ went without power for an average of 1.1 hours, a total of 33K customer-hours (Arizona average 1.9 hours). That ranks 11th worst of 13 Arizona counties and 2621st 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 Apache 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 | July 17, 2021 00:15 | July 17, 2021 15:45 | 15h 30m | 2,213 | 20K |
| 2 | November 30, 2021 01:45 | November 30, 2021 04:15 | 2h 30m | 1,183 | 2,038 |
| 3 | July 18, 2021 19:00 | July 19, 2021 15:30 | 20h 30m | 1,027 | 297 |
| 4 | February 14, 2021 06:15 | February 14, 2021 23:45 | 17h 30m | 432 | 3,999 |
| 5 | July 29, 2021 02:45 | July 30, 2021 02:00 | 23h 15m | 219 | 394 |
| 6 | March 24, 2021 15:30 | March 24, 2021 20:15 | 4h 45m | 197 | 770 |
| 7 | September 30, 2021 13:00 | September 30, 2021 17:00 | 4h | 190 | 429 |
| 8 | July 3, 2021 01:00 | July 3, 2021 02:15 | 1h 15m | 105 | 131 |
| 9 | August 14, 2021 06:30 | August 14, 2021 08:45 | 2h 15m | 105 | 106 |
| 10 | July 23, 2021 23:45 | July 25, 2021 08:45 | 1d 9h | 80 | 531 |
Outage episodes by size in 2021: 9 reached 100+ customers, 3 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 Apache 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 | - | - | - | - | - |
| 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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 29,549 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. Apache County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Apache 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/apache-county