County annual report · FIPS 40041
2025 Delaware County, OK Power Outage Report
In 2025, customers in Delaware County, OK went without power for an average of 5.3 hours, a total of 125K customer-hours (Oklahoma average 4.9 hours). That ranks 45th worst of 77 Oklahoma counties and 1430th of 3,000 nationally.
Compared with OK, the US and 2024
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Delaware County, 2025
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 29, 2025 12:00 | April 30, 2025 02:45 | 14h 45m | 3,893 | 14K |
| 2 | June 18, 2025 06:15 | June 19, 2025 03:45 | 21h 30m | 3,106 | 19K |
| 3 | March 14, 2025 12:30 | March 15, 2025 04:15 | 15h 45m | 1,969 | 4,615 |
| 4 | November 20, 2025 09:30 | November 20, 2025 17:30 | 8h | 1,399 | 614 |
| 5 | March 19, 2025 09:45 | March 19, 2025 21:00 | 11h 15m | 1,310 | 2,052 |
| 6 | May 4, 2025 02:00 | May 4, 2025 03:30 | 1h 30m | 1,034 | 647 |
| 7 | September 15, 2025 17:45 | September 15, 2025 22:15 | 4h 30m | 1,029 | 1,059 |
| 8 | May 19, 2025 22:15 | May 20, 2025 10:15 | 12h | 1,022 | 4,512 |
| 9 | December 15, 2025 17:15 | December 16, 2025 00:00 | 6h 45m | 994 | 2,303 |
| 10 | May 18, 2025 07:00 | May 19, 2025 08:15 | 1d 1h | 952 | 2,997 |
Outage episodes by size in 2025: 90 reached 100+ customers, 8 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 Delaware County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Public Service Co of Oklahoma | 2024 | 3.1 hrs | 1.55 | 1.9 hrs | 1.30 |
| Empire District Electric Co | 2024 | 9.1 hrs | 1.95 | 1.9 hrs | 0.98 |
| Ozarks Electric Coop Corp - (AR) | 2024 | 4.2 hrs | 1.78 | 76 min | 0.95 |
| Lake Region Electric Coop, Inc - (OK) | 2024 | 5.7 hrs | 1.83 | 1.9 hrs | 1.08 |
| Northeast Oklahoma Electric Co | - | - | - | - | - |
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 Oklahoma's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 23,694 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. Delaware County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Delaware County, OK annual power outage report, 2025, 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/2025/oklahoma/delaware-county