County annual report · FIPS 46103
2022 Pennington County, SD Power Outage Report
In 2022, customers in Pennington County, SD went without power for an average of 1.9 hours, a total of 128K customer-hours (South Dakota average 6.9 hours). That ranks 49th worst of 63 South Dakota counties and 2340th 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 Pennington 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 | September 13, 2022 17:30 | September 15, 2022 02:15 | 1d 8h | 2,445 | 5,645 |
| 2 | June 20, 2022 17:00 | June 20, 2022 21:45 | 4h 45m | 2,267 | 1,414 |
| 3 | December 21, 2022 16:00 | December 21, 2022 18:30 | 2h 30m | 1,699 | 1,324 |
| 4 | November 1, 2022 14:30 | November 10, 2022 14:45 | 9d | 1,654 | 41K |
| 5 | April 6, 2022 11:15 | April 8, 2022 03:15 | 1d 16h | 1,619 | 2,289 |
| 6 | April 22, 2022 16:15 | April 24, 2022 02:30 | 1d 10h | 1,063 | 2,510 |
| 7 | February 19, 2022 07:30 | February 19, 2022 14:45 | 7h 15m | 958 | 4,210 |
| 8 | November 25, 2022 17:30 | November 30, 2022 14:15 | 4d 20h | 930 | 863 |
| 9 | September 6, 2022 18:30 | September 7, 2022 12:30 | 18h | 704 | 723 |
| 10 | July 18, 2022 07:15 | July 19, 2022 14:00 | 1d 6h | 690 | 2,108 |
Outage episodes by size in 2022: 46 reached 100+ customers, 6 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 Pennington 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 |
| West River Electric Assn Inc | 2022 | 47 min | 0.48 | 47 min | 0.48 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| 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 ÷ 68,130 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. Pennington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Pennington 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/pennington-county