County annual report · FIPS 04001
2018 Apache County, AZ Power Outage Report
In 2018, customers in Apache County, AZ went without power for an average of 0.4 hours, a total of 13K customer-hours (Arizona average 1.9 hours). That ranks 13th worst of 13 Arizona counties and 2541st 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 Apache 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 | August 16, 2018 22:00 | August 17, 2018 00:00 | 2h | 1,172 | 1,176 |
| 2 | August 15, 2018 18:45 | August 15, 2018 19:00 | 15m | 1,023 | 256 |
| 3 | September 23, 2018 16:00 | September 23, 2018 18:00 | 2h | 1,018 | 1,818 |
| 4 | January 10, 2018 07:45 | January 10, 2018 17:00 | 9h 15m | 360 | 1,809 |
| 5 | August 10, 2018 01:00 | August 10, 2018 20:30 | 19h 30m | 351 | 888 |
| 6 | April 17, 2018 13:15 | April 17, 2018 18:30 | 5h 15m | 237 | 421 |
| 7 | January 22, 2018 11:00 | January 22, 2018 12:45 | 1h 45m | 203 | 280 |
| 8 | April 12, 2018 19:45 | April 13, 2018 01:00 | 5h 15m | 170 | 673 |
| 9 | April 17, 2018 19:15 | April 18, 2018 00:45 | 5h 30m | 153 | 567 |
| 10 | May 8, 2018 23:15 | May 9, 2018 04:00 | 4h 45m | 147 | 313 |
Outage episodes by size in 2018: 11 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 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 | - | - | - | - | - |
| 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 87% of Arizona's customers in 2018; 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, 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/apache-county