County annual report · FIPS 40019
2021 Carter County, OK Power Outage Report
In 2021, customers in Carter County, OK went without power for an average of 3.3 hours, a total of 98K customer-hours (Oklahoma average 3.2 hours). That ranks 41st worst of 77 Oklahoma counties and 1747th 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 Carter 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 06:45 | February 16, 2021 22:45 | 16h | 5,348 | 11K |
| 2 | October 1, 2021 00:45 | October 1, 2021 03:15 | 2h 30m | 2,146 | 5,365 |
| 3 | October 1, 2021 09:15 | October 1, 2021 11:30 | 2h 15m | 2,145 | 4,798 |
| 4 | May 28, 2021 05:30 | May 28, 2021 14:30 | 9h | 1,933 | 12K |
| 5 | March 22, 2021 16:15 | March 22, 2021 21:45 | 5h 30m | 1,911 | 4,174 |
| 6 | June 29, 2021 15:00 | June 29, 2021 21:00 | 6h | 1,796 | 4,784 |
| 7 | July 11, 2021 05:45 | July 12, 2021 02:00 | 20h 15m | 1,768 | 11K |
| 8 | July 3, 2021 13:15 | July 3, 2021 15:00 | 1h 45m | 1,662 | 2,908 |
| 9 | July 2, 2021 11:45 | July 2, 2021 15:00 | 3h 15m | 1,661 | 5,126 |
| 10 | August 17, 2021 13:30 | August 17, 2021 14:45 | 1h 15m | 1,019 | 1,274 |
Outage episodes by size in 2021: 55 reached 100+ customers, 10 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 Carter 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 |
|---|---|---|---|---|---|
| Cotton Electric Coop, Inc | 2021 | 3.5 hrs | 2.32 | 2.8 hrs | 1.79 |
| Rural Electric Coop, Inc - (OK) | 2021 | 5.2 hrs | 2.89 | 3.9 hrs | 2.24 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| People's Electric Cooperative | - | - | - | - | - |
| Red River Valley Rrl Elec Assn | - | - | - | - | - |
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 ÷ 29,805 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. Carter County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Carter 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/carter-county