County annual report · FIPS 04021
2019 Pinal County, AZ Power Outage Report
In 2019, customers in Pinal County, AZ went without power for an average of 2.3 hours, a total of 210K customer-hours (Arizona average 1.3 hours). That ranks 6th worst of 13 Arizona counties and 1926th of 2,945 nationally.
Compared with AZ, the US and 2018
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Pinal County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 26, 2019 01:45 | April 26, 2019 02:30 | 45m | 7,599 | 4,642 |
| 2 | November 19, 2019 20:00 | November 20, 2019 13:15 | 17h 15m | 5,529 | 9,223 |
| 3 | September 30, 2019 23:15 | October 1, 2019 20:45 | 21h 30m | 3,517 | 43K |
| 4 | December 10, 2019 23:00 | December 11, 2019 02:00 | 3h | 3,269 | 5,175 |
| 5 | December 10, 2019 15:45 | December 10, 2019 20:30 | 4h 45m | 2,888 | 3,112 |
| 6 | January 26, 2019 15:15 | January 27, 2019 06:00 | 14h 45m | 2,847 | 3,374 |
| 7 | November 29, 2019 03:30 | December 2, 2019 13:45 | 3d 10h | 2,362 | 14K |
| 8 | December 13, 2019 15:45 | December 30, 2019 14:30 | 16d 22h | 2,305 | 6,109 |
| 9 | November 11, 2019 16:45 | November 11, 2019 17:00 | 15m | 2,248 | 562 |
| 10 | September 14, 2019 21:45 | September 15, 2019 16:15 | 18h 30m | 1,982 | 1,709 |
Outage episodes by size in 2019: 73 reached 100+ customers, 33 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 2019, 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 |
| Salt River Project | 2018 | 84 min | 0.83 | 37 min | 0.57 |
| Trico Electric Cooperative Inc | 2018 | 1.5 hrs | 0.66 | 28 min | 0.25 |
| Electrical Dist No3 Pinal County | 2018 | 2.4 hrs | 1.24 | 41 min | 0.59 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| USBIA-San Carlos Project | - | - | - | - | - |
| Tohono O'Odham Utility Authority | - | - | - | - | - |
| Gila River Indian Utility Authority (GRICUA) | - | - | - | - | - |
| Ak-Chin Electric Utility Authority | - | - | - | - | - |
| Electrical Dist No2 Pinal County | - | - | - | - | - |
| 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 86% of Arizona's customers in 2019; 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, 2019, 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/2019/arizona/pinal-county