County annual report · FIPS 04003
2021 Cochise County, AZ Power Outage Report
In 2021, customers in Cochise County, AZ went without power for an average of 0.5 hours, a total of 37K customer-hours (Arizona average 1.9 hours). That ranks 13th worst of 13 Arizona counties and 2824th 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 Cochise 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 23, 2021 03:15 | July 23, 2021 06:30 | 3h 15m | 5,266 | 7,915 |
| 2 | July 23, 2021 20:15 | July 23, 2021 22:00 | 1h 45m | 1,987 | 1,158 |
| 3 | May 26, 2021 22:15 | May 27, 2021 01:15 | 3h | 1,984 | 1,396 |
| 4 | August 17, 2021 00:15 | August 17, 2021 01:00 | 45m | 1,476 | 820 |
| 5 | June 15, 2021 00:15 | June 15, 2021 10:30 | 10h 15m | 1,471 | 2,511 |
| 6 | May 6, 2021 08:15 | May 6, 2021 10:45 | 2h 30m | 1,451 | 3,628 |
| 7 | May 12, 2021 08:15 | May 12, 2021 08:30 | 15m | 1,451 | 363 |
| 8 | June 4, 2021 08:15 | June 4, 2021 08:30 | 15m | 1,451 | 363 |
| 9 | July 10, 2021 22:15 | July 11, 2021 03:15 | 5h | 1,413 | 2,135 |
| 10 | May 21, 2021 17:45 | May 21, 2021 18:30 | 45m | 1,296 | 972 |
Outage episodes by size in 2021: 38 reached 100+ customers, 11 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 Cochise 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 |
| Sulphur Springs Valley E C Inc | 2021 | 71 min | 0.67 | 52 min | 0.67 |
| Tucson Electric Power Co | 2021 | 1.7 hrs | 0.91 | - | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Columbus 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 ÷ 80,227 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. Cochise County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Cochise 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/cochise-county