County annual report · FIPS 40041
2018 Delaware County, OK Power Outage Report
In 2018, customers in Delaware County, OK went without power for an average of 5.9 hours, a total of 141K customer-hours (Oklahoma average 2.7 hours). That ranks 18th worst of 77 Oklahoma counties and 916th of 2,798 nationally.
Compared with OK, the US and 2017
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Delaware County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 31, 2018 13:15 | June 1, 2018 02:45 | 13h 30m | 12,215 | 6,128 |
| 2 | October 6, 2018 23:00 | October 8, 2018 02:30 | 1d 3h | 4,520 | 23K |
| 3 | December 1, 2018 04:30 | December 2, 2018 02:00 | 21h 30m | 3,127 | 8,247 |
| 4 | July 17, 2018 14:30 | July 18, 2018 03:00 | 12h 30m | 2,572 | 9,436 |
| 5 | July 16, 2018 10:15 | July 16, 2018 11:00 | 45m | 1,882 | 596 |
| 6 | January 16, 2018 02:45 | January 16, 2018 10:45 | 8h | 1,626 | 5,520 |
| 7 | July 16, 2018 17:00 | July 17, 2018 08:30 | 15h 30m | 1,538 | 2,333 |
| 8 | August 16, 2018 23:00 | August 17, 2018 19:30 | 20h 30m | 1,534 | 8,282 |
| 9 | January 17, 2018 09:45 | January 17, 2018 17:00 | 7h 15m | 1,496 | 3,290 |
| 10 | August 21, 2018 12:45 | August 24, 2018 13:15 | 3d | 1,379 | 689 |
Outage episodes by size in 2018: 106 reached 100+ customers, 23 reached 1,000+ customers, 1 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 2018, 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 | 2018 | 2.1 hrs | 1.34 | 1.7 hrs | 1.17 |
| Empire District Electric Co | 2018 | 2.1 hrs | 1.34 | 1.5 hrs | 1.05 |
| Ozarks Electric Coop Corp - (AR) | 2018 | 9.0 hrs | 1.91 | 59 min | 0.67 |
| Lake Region Electric Coop, Inc - (OK) | 2018 | 2.6 hrs | 1.31 | 2.2 hrs | 1.15 |
| 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 89% of Oklahoma's customers in 2018; 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, 2018, 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/2018/oklahoma/delaware-county