County annual report · FIPS 46102
2022 Oglala Lakota County, SD Power Outage Report
In 2022, customers in Oglala Lakota County, SD went without power for an average of 1.8 hours, a total of 7,535 customer-hours (South Dakota average 6.9 hours). That ranks 51st worst of 63 South Dakota counties and 2361st of 2,976 nationally.
Compared with SD, the US and 2021
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Oglala Lakota County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 16, 2022 19:30 | December 16, 2022 20:45 | 1h 15m | 1,500 | 1,875 |
| 2 | January 7, 2022 12:00 | January 7, 2022 18:00 | 6h | 901 | 3,102 |
| 3 | May 28, 2022 22:15 | May 28, 2022 22:45 | 30m | 880 | 220 |
| 4 | October 11, 2022 15:45 | October 11, 2022 16:00 | 15m | 487 | 122 |
| 5 | March 7, 2022 02:00 | March 7, 2022 02:15 | 15m | 189 | 47 |
| 6 | November 17, 2022 07:45 | November 17, 2022 09:00 | 1h 15m | 73 | 41 |
| 7 | November 7, 2022 19:15 | November 8, 2022 04:15 | 9h | 71 | 595 |
| 8 | December 21, 2022 22:00 | December 21, 2022 22:30 | 30m | 66 | 33 |
| 9 | April 11, 2022 20:45 | April 12, 2022 12:30 | 15h 45m | 57 | 898 |
| 10 | June 18, 2022 16:00 | June 20, 2022 12:45 | 1d 20h | 29 | 202 |
Outage episodes by size in 2022: 5 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 Oglala Lakota County reported on EIA Form 861 for 2022, 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 |
|---|---|---|---|---|---|
| Nebraska Public Power District | 2022 | 2.2 hrs | 1.04 | 78 min | 0.81 |
| Black Hills Electric Coop, Inc | 2022 | 2.2 hrs | 0.70 | 80 min | 0.61 |
| West River Electric Assn Inc | 2022 | 47 min | 0.48 | 47 min | 0.48 |
| LaCreek Electric Assn, Inc | - | - | - | - | - |
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 South Dakota's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,164 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. Oglala Lakota County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Oglala Lakota County, SD annual power outage report, 2022, 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/2022/south-dakota/oglala-lakota-county