County annual report · FIPS 04021
2023 Pinal County, AZ Power Outage Report
In 2023, customers in Pinal County, AZ went without power for an average of 3.2 hours, a total of 291K customer-hours (Arizona average 2.1 hours). That ranks 6th worst of 14 Arizona counties and 1905th of 2,977 nationally.
Compared with AZ, the US and 2022
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Pinal County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 25, 2023 12:45 | January 25, 2023 15:30 | 2h 45m | 7,552 | 16K |
| 2 | July 18, 2023 00:30 | July 20, 2023 19:15 | 2d 18h | 7,189 | 7,267 |
| 3 | July 27, 2023 03:30 | July 28, 2023 16:45 | 1d 13h | 5,317 | 12K |
| 4 | August 28, 2023 02:00 | September 2, 2023 23:45 | 5d 21h | 5,224 | 31K |
| 5 | June 30, 2023 05:00 | June 30, 2023 08:00 | 3h | 4,406 | 5,822 |
| 6 | February 15, 2023 05:00 | February 15, 2023 11:45 | 6h 45m | 4,388 | 7,375 |
| 7 | September 12, 2023 20:45 | September 14, 2023 01:15 | 1d 4h | 3,672 | 16K |
| 8 | July 21, 2023 22:00 | July 22, 2023 05:45 | 7h 45m | 3,622 | 7,202 |
| 9 | August 11, 2023 18:45 | August 13, 2023 18:30 | 1d 23h | 3,165 | 12K |
| 10 | February 22, 2023 08:00 | February 22, 2023 20:30 | 12h 30m | 2,909 | 6,289 |
Outage episodes by size in 2023: 124 reached 100+ customers, 54 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 Pinal County reported on EIA Form 861 for 2023, 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 | 2023 | 1.6 hrs | 0.88 | 82 min | 0.81 |
| Salt River Project | 2023 | 70 min | 1.01 | 49 min | 0.81 |
| Trico Electric Cooperative Inc | 2023 | 4.0 hrs | 1.17 | 82 min | 0.65 |
| Gila River Indian Utility Authority (GRICUA) | 2023 | 2.7 hrs | 2.32 | 2.7 hrs | 2.32 |
| Electrical Dist No2 Pinal County | 2023 | 3.0 hrs | - | 2.3 hrs | - |
| Electrical Dist No3 Pinal County | 2023 | 73 min | 1.22 | 73 min | 1.22 |
| 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 n/a of Arizona's customers in 2023; 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, 2023, 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/2023/arizona/pinal-county