County annual report · FIPS 04021
2016 Pinal County, AZ Power Outage Report
In 2016, customers in Pinal County, AZ went without power for an average of 0.8 hours, a total of 74K customer-hours (Arizona average 0.7 hours). That ranks 3rd worst of 9 Arizona counties and 1874th of 2,391 nationally.
Compared with AZ, the US and 2015
Coverage line is EAGLE-I's share of Arizona customers tracked each year.
Biggest outages in Pinal County, 2016
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 30, 2016 00:45 | July 1, 2016 04:30 | 1d 3h | 3,440 | 15K |
| 2 | February 1, 2016 05:15 | February 2, 2016 00:00 | 18h 45m | 1,932 | 5,357 |
| 3 | February 12, 2016 14:30 | February 12, 2016 15:30 | 1h | 1,774 | 1,774 |
| 4 | July 30, 2016 02:45 | July 30, 2016 04:00 | 1h 15m | 1,534 | 1,429 |
| 5 | July 30, 2016 04:45 | July 30, 2016 06:00 | 1h 15m | 1,534 | 1,778 |
| 6 | June 14, 2016 23:00 | June 14, 2016 23:15 | 15m | 1,515 | 379 |
| 7 | August 25, 2016 02:00 | August 25, 2016 10:15 | 8h 15m | 1,465 | 2,831 |
| 8 | August 3, 2016 02:00 | August 3, 2016 09:45 | 7h 45m | 1,409 | 2,853 |
| 9 | November 25, 2016 14:30 | November 25, 2016 15:15 | 45m | 1,400 | 1,050 |
| 10 | May 21, 2016 17:30 | May 21, 2016 22:15 | 4h 45m | 1,360 | 417 |
Outage episodes by size in 2016: 50 reached 100+ customers, 19 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 2016, 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 | 2016 | 2.0 hrs | 0.91 | 87 min | 0.82 |
| Salt River Project | 2016 | 46 min | 0.66 | 43 min | 0.63 |
| Trico Electric Cooperative Inc | 2016 | 41 min | 0.49 | 41 min | 0.49 |
| 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 No3 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 n/a of Arizona's customers in 2016; 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, 2016, 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/2016/arizona/pinal-county