County annual report · FIPS 40043
2025 Dewey County, OK Power Outage Report
In 2025, customers in Dewey County, OK went without power for an average of 17.9 hours, a total of 47K customer-hours (Oklahoma average 4.9 hours). That ranks 6th worst of 77 Oklahoma counties and 416th 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 Dewey 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 | May 15, 2025 06:15 | May 15, 2025 07:45 | 1h 30m | 1,140 | 1,145 |
| 2 | March 14, 2025 16:45 | March 15, 2025 21:45 | 1d 5h | 954 | 5,620 |
| 3 | August 24, 2025 23:45 | August 27, 2025 20:00 | 2d 20h | 899 | 15K |
| 4 | March 19, 2025 08:45 | March 19, 2025 23:30 | 14h 45m | 728 | 3,356 |
| 5 | May 20, 2025 01:00 | May 20, 2025 20:00 | 19h | 641 | 2,076 |
| 6 | May 27, 2025 00:00 | May 27, 2025 19:45 | 19h 45m | 616 | 1,272 |
| 7 | April 3, 2025 23:45 | April 4, 2025 20:00 | 20h 15m | 598 | 1,008 |
| 8 | March 5, 2025 00:30 | March 5, 2025 19:00 | 18h 30m | 443 | 3,371 |
| 9 | January 5, 2025 11:00 | January 5, 2025 16:15 | 5h 15m | 352 | 1,313 |
| 10 | March 4, 2025 01:00 | March 4, 2025 08:30 | 7h 30m | 341 | 1,134 |
Outage episodes by size in 2025: 25 reached 100+ customers, 1 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 Dewey 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 |
| Cimarron Electric Coop | 2024 | 80 min | 0.89 | 39 min | 0.50 |
| Northfork Electric Coop, Inc | 2018 | 3.7 hrs | - | 2.7 hrs | - |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| CKenergy Electric Cooperative | - | - | - | - | - |
| Northwestern Electric Coop Inc - (OK) | - | - | - | - | - |
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 ÷ 2,623 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. Dewey County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dewey 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/dewey-county