County annual report · FIPS 04021
2022 Pinal County, AZ Power Outage Report
In 2022, customers in Pinal County, AZ went without power for an average of 9.0 hours, a total of 831K customer-hours (Arizona average 2.0 hours). That ranks 2nd worst of 13 Arizona counties and 811th of 2,976 nationally.
Compared with AZ, the US and 2021
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Pinal County, 2022
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 16, 2022 00:00 | July 22, 2022 21:45 | 6d 21h | 10,905 | 466K |
| 2 | October 19, 2022 19:00 | October 20, 2022 13:45 | 18h 45m | 7,839 | 15K |
| 3 | September 2, 2022 03:30 | September 2, 2022 19:45 | 16h 15m | 7,300 | 20K |
| 4 | September 7, 2022 19:30 | October 11, 2022 23:30 | 34d 4h | 6,661 | 62K |
| 5 | August 23, 2022 22:30 | August 24, 2022 00:45 | 2h 15m | 6,443 | 7,206 |
| 6 | October 15, 2022 15:30 | October 16, 2022 13:45 | 22h 15m | 6,362 | 12K |
| 7 | September 2, 2022 21:15 | September 5, 2022 19:30 | 2d 22h | 6,192 | 22K |
| 8 | August 16, 2022 15:00 | August 22, 2022 08:15 | 5d 17h | 5,459 | 21K |
| 9 | August 13, 2022 22:15 | August 14, 2022 14:30 | 16h 15m | 3,808 | 1,720 |
| 10 | June 21, 2022 01:30 | July 3, 2022 11:00 | 12d 9h | 3,130 | 29K |
Outage episodes by size in 2022: 113 reached 100+ customers, 50 reached 1,000+ customers, 1 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 Pinal County reported on EIA Form 861 for 2022, 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 | 2022 | 2.3 hrs | 1.04 | 84 min | 0.89 |
| Salt River Project | 2022 | 81 min | 1.09 | 50 min | 0.85 |
| Trico Electric Cooperative Inc | 2022 | 71 min | 0.62 | 48 min | 0.38 |
| Gila River Indian Utility Authority (GRICUA) | 2022 | 2.0 hrs | 2.06 | 2.0 hrs | 2.06 |
| Electrical Dist No2 Pinal County | 2022 | 139.9 hrs | - | 8.0 hrs | - |
| Electrical Dist No3 Pinal County | 2022 | 86 min | 1.18 | 61 min | 0.91 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| USBIA-San Carlos Project | - | - | - | - | - |
| Tohono O'Odham Utility Authority | - | - | - | - | - |
| Ak-Chin Electric Utility Authority | - | - | - | - | - |
| Electrical Dist No4 Pinal County | - | - | - | - | - |
| Hohokam Irr & Drain Dist | - | - | - | - | - |
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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 92,098 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. Pinal County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Pinal County, AZ annual power outage report, 2022, 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/2022/arizona/pinal-county