County annual report · FIPS 40041
2015 Delaware County, OK Power Outage Report
In 2015, customers in Delaware County, OK went without power for an average of 8.5 hours, a total of 202K customer-hours (Oklahoma average 5.1 hours). That ranks 14th worst of 74 Oklahoma counties and 311th of 2,484 nationally.
Compared with OK, the US
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Delaware County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 26, 2015 22:45 | December 30, 2015 22:30 | 3d 23h | 5,140 | 32K |
| 2 | October 4, 2015 12:45 | October 5, 2015 06:30 | 17h 45m | 4,006 | 26K |
| 3 | November 11, 2015 18:45 | November 12, 2015 07:15 | 12h 30m | 2,944 | 9,650 |
| 4 | June 25, 2015 19:00 | June 26, 2015 01:00 | 6h | 2,603 | 1,317 |
| 5 | May 17, 2015 05:45 | May 19, 2015 00:15 | 1d 18h | 2,572 | 19K |
| 6 | December 9, 2015 14:30 | December 9, 2015 17:45 | 3h 15m | 2,494 | 668 |
| 7 | May 25, 2015 19:00 | May 26, 2015 09:45 | 14h 45m | 2,154 | 6,135 |
| 8 | April 1, 2015 15:30 | April 1, 2015 17:45 | 2h 15m | 2,141 | 2,678 |
| 9 | February 23, 2015 18:30 | February 23, 2015 19:15 | 45m | 1,506 | 1,130 |
| 10 | May 9, 2015 04:00 | May 9, 2015 19:30 | 15h 30m | 1,351 | 1,264 |
Outage episodes by size in 2015: 122 reached 100+ customers, 20 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 2015, 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 | 2015 | 6.7 hrs | 1.58 | 1.9 hrs | 1.17 |
| Empire District Electric Co | 2015 | 3.2 hrs | 2.00 | 1.8 hrs | 1.42 |
| Ozarks Electric Coop Corp - (AR) | 2015 | 2.1 hrs | 1.68 | 49 min | 0.64 |
| Lake Region Electric Coop, Inc - (OK) | 2015 | 3.8 hrs | 1.48 | 3.5 hrs | 1.45 |
| 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 2015; 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, 2015, 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/2015/oklahoma/delaware-county