County annual report · FIPS 04017
2016 Navajo County, AZ Power Outage Report
In 2016, customers in Navajo County, AZ went without power for an average of 0.3 hours, a total of 27K customer-hours (Arizona average 0.7 hours). That ranks 6th worst of 9 Arizona counties and 2108th of 2,391 nationally.
Compared with AZ, the US and 2015
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Navajo County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 22, 2016 17:30 | March 23, 2016 02:45 | 9h 15m | 3,683 | 7,960 |
| 2 | January 10, 2016 20:00 | January 11, 2016 05:45 | 9h 45m | 3,006 | 11K |
| 3 | February 1, 2016 06:45 | February 1, 2016 18:00 | 11h 15m | 1,351 | 3,824 |
| 4 | April 4, 2016 15:15 | April 5, 2016 01:00 | 9h 45m | 564 | 561 |
| 5 | February 2, 2016 18:30 | February 2, 2016 19:00 | 30m | 398 | 199 |
| 6 | January 8, 2016 06:15 | January 8, 2016 07:15 | 1h | 286 | 286 |
| 7 | January 7, 2016 17:15 | January 7, 2016 18:00 | 45m | 209 | 157 |
| 8 | January 5, 2016 16:30 | January 5, 2016 16:45 | 15m | 145 | 36 |
| 9 | March 12, 2016 19:15 | March 12, 2016 19:30 | 15m | 143 | 36 |
| 10 | February 4, 2016 02:30 | February 4, 2016 18:30 | 16h | 114 | 807 |
Outage episodes by size in 2016: 10 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 Navajo County reported on EIA Form 861 for 2016, 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 | 2016 | 2.0 hrs | 0.91 | 87 min | 0.82 |
| 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 n/a of Arizona's customers in 2016; 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, 2016, 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/2016/arizona/navajo-county