County annual report · FIPS 46047
2022 Fall River County, SD Power Outage Report
In 2022, customers in Fall River County, SD went without power for an average of 2.2 hours, a total of 8,804 customer-hours (South Dakota average 6.9 hours). That ranks 45th worst of 63 South Dakota counties and 2231st 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 Fall River 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 22, 2022 10:30 | December 22, 2022 15:15 | 4h 45m | 506 | 2,278 |
| 2 | November 27, 2022 01:45 | November 28, 2022 15:00 | 1d 13h | 302 | 704 |
| 3 | March 30, 2022 01:45 | March 30, 2022 09:00 | 7h 15m | 162 | 1,175 |
| 4 | June 3, 2022 16:45 | June 3, 2022 20:15 | 3h 30m | 156 | 251 |
| 5 | July 3, 2022 02:15 | July 3, 2022 18:30 | 16h 15m | 79 | 1,163 |
| 6 | May 17, 2022 22:30 | May 19, 2022 04:30 | 1d 6h | 77 | 281 |
| 7 | July 5, 2022 05:30 | July 5, 2022 17:30 | 12h | 72 | 548 |
| 8 | April 23, 2022 13:00 | April 23, 2022 17:00 | 4h | 58 | 99 |
| 9 | November 10, 2022 14:45 | November 10, 2022 15:45 | 1h | 48 | 48 |
| 10 | November 30, 2022 17:45 | November 30, 2022 19:30 | 1h 45m | 46 | 81 |
Outage episodes by size in 2022: 4 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 Fall River 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2022 | 1.8 hrs | 0.88 | 1.6 hrs | 0.85 |
| Black Hills Electric Coop, Inc | 2022 | 2.2 hrs | 0.70 | 80 min | 0.61 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Niobrara Electric Assn, Inc | - | - | - | - | - |
| Black Hills Energy | - | - | - | - | - |
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 ÷ 4,055 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. Fall River County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Fall River 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/fall-river-county