County annual report · FIPS 40041
2021 Delaware County, OK Power Outage Report
In 2021, customers in Delaware County, OK went without power for an average of 5.8 hours, a total of 137K customer-hours (Oklahoma average 3.2 hours). That ranks 16th worst of 77 Oklahoma counties and 1186th of 2,974 nationally.
Compared with OK, the US and 2020
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Delaware County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 16, 2021 04:30 | February 17, 2021 01:15 | 20h 45m | 5,073 | 31K |
| 2 | March 17, 2021 11:30 | March 17, 2021 23:45 | 12h 15m | 2,840 | 848 |
| 3 | February 23, 2021 23:15 | February 24, 2021 08:30 | 9h 15m | 2,286 | 7,438 |
| 4 | July 4, 2021 16:00 | July 4, 2021 18:15 | 2h 15m | 2,204 | 4,955 |
| 5 | May 23, 2021 15:15 | May 23, 2021 22:45 | 7h 30m | 2,190 | 3,938 |
| 6 | April 13, 2021 13:30 | April 13, 2021 19:45 | 6h 15m | 1,606 | 818 |
| 7 | October 28, 2021 17:00 | October 29, 2021 12:15 | 19h 15m | 1,484 | 5,427 |
| 8 | November 24, 2021 12:30 | November 24, 2021 22:45 | 10h 15m | 1,436 | 1,977 |
| 9 | March 13, 2021 15:00 | March 13, 2021 23:45 | 8h 45m | 1,433 | 2,427 |
| 10 | September 15, 2021 05:15 | September 15, 2021 18:30 | 13h 15m | 1,366 | 5,072 |
Outage episodes by size in 2021: 93 reached 100+ customers, 14 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 2021, 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 | 2021 | 2.3 hrs | 1.39 | 1.9 hrs | 1.21 |
| Empire District Electric Co | 2021 | 2.4 hrs | 1.25 | 88 min | 0.98 |
| Ozarks Electric Coop Corp - (AR) | 2021 | 86 min | 1.06 | 49 min | 0.80 |
| Lake Region Electric Coop, Inc - (OK) | 2021 | 2.2 hrs | 1.09 | 1.9 hrs | 0.99 |
| 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 93% of Oklahoma's customers in 2021; 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, 2021, 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/2021/oklahoma/delaware-county