County annual report · FIPS 46102
2024 Oglala Lakota County, SD Power Outage Report
In 2024, customers in Oglala Lakota County, SD went without power for an average of 0.5 hours, a total of 2,240 customer-hours (South Dakota average 2.3 hours). That ranks 57th worst of 65 South Dakota counties and 2837th of 2,990 nationally.
Compared with SD, the US and 2023
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Oglala Lakota County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 6, 2024 18:30 | August 6, 2024 21:00 | 2h 30m | 563 | 694 |
| 2 | February 13, 2024 08:45 | February 13, 2024 13:15 | 4h 30m | 261 | 709 |
| 3 | July 23, 2024 12:45 | July 24, 2024 12:45 | 1d | 67 | 133 |
| 4 | October 2, 2024 19:45 | October 2, 2024 21:45 | 2h | 44 | 82 |
| 5 | October 24, 2024 19:00 | October 24, 2024 20:00 | 1h | 33 | 17 |
| 6 | October 13, 2024 16:15 | October 13, 2024 18:00 | 1h 45m | 30 | 53 |
| 7 | April 15, 2024 00:45 | April 15, 2024 05:15 | 4h 30m | 25 | 88 |
| 8 | February 1, 2024 15:45 | February 1, 2024 16:45 | 1h | 23 | 23 |
| 9 | March 19, 2024 15:30 | March 19, 2024 21:00 | 5h 30m | 22 | 81 |
| 10 | April 15, 2024 07:45 | April 15, 2024 19:30 | 11h 45m | 18 | 131 |
Outage episodes by size in 2024: 2 reached 100+ customers, 0 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 2024, 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 | 2024 | 74 min | 0.74 | 74 min | 0.74 |
| Black Hills Electric Coop, Inc | 2024 | 3.8 hrs | 1.03 | 1.7 hrs | 0.77 |
| West River Electric Assn Inc | 2024 | 44 min | 0.53 | 44 min | 0.53 |
| 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 n/a of South Dakota's customers in 2024; 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, 2024, 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/2024/south-dakota/oglala-lakota-county