County annual report · FIPS 40043
2020 Dewey County, OK Power Outage Report
In 2020, customers in Dewey County, OK went without power for an average of 19.2 hours, a total of 50K customer-hours (Oklahoma average 27.7 hours). That ranks 18th worst of 77 Oklahoma counties and 451st of 3,019 nationally.
Compared with OK, the US and 2019
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Dewey County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 27, 2020 06:00 | November 1, 2020 21:15 | 5d 15h | 1,206 | 31K |
| 2 | June 19, 2020 12:00 | June 19, 2020 17:45 | 5h 45m | 670 | 2,076 |
| 3 | April 3, 2020 09:00 | April 3, 2020 10:30 | 1h 30m | 607 | 911 |
| 4 | June 4, 2020 23:30 | June 5, 2020 08:45 | 9h 15m | 429 | 1,155 |
| 5 | June 9, 2020 19:15 | June 9, 2020 21:00 | 1h 45m | 405 | 189 |
| 6 | March 18, 2020 06:15 | March 18, 2020 08:30 | 2h 15m | 340 | 704 |
| 7 | May 21, 2020 04:15 | May 21, 2020 04:30 | 15m | 340 | 85 |
| 8 | June 9, 2020 21:45 | June 10, 2020 13:30 | 15h 45m | 326 | 2,068 |
| 9 | December 23, 2020 17:45 | December 23, 2020 23:00 | 5h 15m | 320 | 738 |
| 10 | December 3, 2020 11:00 | December 3, 2020 15:30 | 4h 30m | 319 | 1,278 |
Outage episodes by size in 2020: 23 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 2020, 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 | 2020 | 4.4 hrs | 1.41 | 89 min | 1.03 |
| Cimarron Electric Coop | 2020 | 47.4 hrs | 2.45 | 59 min | 0.51 |
| 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 93% of Oklahoma's customers in 2020; 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, 2020, 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/2020/oklahoma/dewey-county