County annual report · FIPS 04005
2018 Coconino County, AZ Power Outage Report
In 2018, customers in Coconino County, AZ went without power for an average of 2.3 hours, a total of 322K customer-hours (Arizona average 1.9 hours). That ranks 6th worst of 13 Arizona counties and 1710th 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 Coconino 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 | October 7, 2018 10:45 | October 8, 2018 02:00 | 15h 15m | 5,518 | 26K |
| 2 | June 10, 2018 14:15 | June 10, 2018 16:00 | 1h 45m | 4,769 | 7,414 |
| 3 | July 5, 2018 02:30 | July 5, 2018 21:00 | 18h 30m | 4,144 | 7,512 |
| 4 | July 26, 2018 02:15 | July 27, 2018 15:30 | 1d 13h | 3,383 | 17K |
| 5 | August 23, 2018 06:00 | August 24, 2018 03:45 | 21h 45m | 3,032 | 9,219 |
| 6 | July 9, 2018 02:15 | July 9, 2018 09:45 | 7h 30m | 2,312 | 9,373 |
| 7 | April 29, 2018 21:45 | May 3, 2018 00:00 | 3d 2h | 2,115 | 126K |
| 8 | November 28, 2018 02:30 | November 28, 2018 09:30 | 7h | 1,768 | 12K |
| 9 | August 13, 2018 02:45 | August 13, 2018 07:30 | 4h 45m | 1,760 | 5,449 |
| 10 | August 9, 2018 21:15 | August 9, 2018 21:30 | 15m | 1,719 | 430 |
Outage episodes by size in 2018: 63 reached 100+ customers, 17 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 Coconino 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 |
| Garkane Energy Coop, Inc | 2018 | 6.5 hrs | - | 6.5 hrs | - |
| Mohave Electric Cooperative, Inc. | 2018 | 9.4 hrs | - | 8.7 hrs | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Navajo Tribal Utility Authority | - | - | - | - | - |
| City of Fredonia - (AZ) | - | - | - | - | - |
| City of Williams - AZ | - | - | - | - | - |
| Page Utility Enterprises | - | - | - | - | - |
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 ÷ 138,090 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. Coconino County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Coconino 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/coconino-county