County annual report · FIPS 04003
2018 Cochise County, AZ Power Outage Report
In 2018, customers in Cochise County, AZ went without power for an average of 0.5 hours, a total of 40K customer-hours (Arizona average 1.9 hours). That ranks 11th worst of 13 Arizona counties and 2503rd 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 Cochise 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 | June 4, 2018 19:30 | June 4, 2018 20:15 | 45m | 3,623 | 2,281 |
| 2 | August 15, 2018 02:00 | August 15, 2018 03:15 | 1h 15m | 3,546 | 4,432 |
| 3 | July 21, 2018 02:00 | July 21, 2018 19:00 | 17h | 1,751 | 7,115 |
| 4 | June 8, 2018 17:15 | June 8, 2018 17:45 | 30m | 1,601 | 801 |
| 5 | October 7, 2018 01:15 | October 7, 2018 02:30 | 1h 15m | 1,470 | 1,838 |
| 6 | July 31, 2018 01:00 | July 31, 2018 03:00 | 2h | 634 | 1,168 |
| 7 | August 30, 2018 05:00 | August 31, 2018 09:00 | 1d 4h | 513 | 1,529 |
| 8 | October 23, 2018 14:45 | October 23, 2018 15:45 | 1h | 508 | 280 |
| 9 | June 4, 2018 21:45 | June 4, 2018 23:45 | 2h | 371 | 742 |
| 10 | October 16, 2018 02:15 | October 17, 2018 11:30 | 1d 9h | 334 | 1,246 |
Outage episodes by size in 2018: 19 reached 100+ customers, 5 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 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 |
| Sulphur Springs Valley E C Inc | 2018 | 73 min | 0.93 | 73 min | 0.93 |
| Tucson Electric Power Co | 2018 | 51 min | 0.78 | 0 min | 0.00 |
| 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 87% of Arizona's customers in 2018; 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, 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/cochise-county