County annual report · FIPS 46073
2021 Jerauld County, SD Power Outage Report
In 2021, customers in Jerauld County, SD went without power for an average of 1.6 hours, a total of 1,634 customer-hours (South Dakota average 3.4 hours). That ranks 44th worst of 61 South Dakota counties and 2440th of 2,974 nationally.
Compared with SD, the US and 2020
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Jerauld 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 | September 10, 2021 19:00 | September 10, 2021 21:45 | 2h 45m | 433 | 1,121 |
| 2 | January 14, 2021 14:00 | January 14, 2021 15:45 | 1h 45m | 46 | 40 |
| 3 | February 3, 2021 14:30 | February 3, 2021 22:45 | 8h 15m | 43 | 172 |
| 4 | March 15, 2021 17:00 | March 15, 2021 22:45 | 5h 45m | 16 | 57 |
| 5 | July 14, 2021 04:30 | July 14, 2021 06:30 | 2h | 13 | 8 |
| 6 | August 28, 2021 21:00 | August 28, 2021 23:30 | 2h 30m | 12 | 15 |
| 7 | August 25, 2021 21:45 | August 26, 2021 00:15 | 2h 30m | 9 | 23 |
| 8 | August 31, 2021 21:30 | September 1, 2021 00:15 | 2h 45m | 9 | 25 |
| 9 | July 6, 2021 16:00 | July 6, 2021 16:15 | 15m | 8 | 2 |
| 10 | August 12, 2021 15:45 | August 12, 2021 17:00 | 1h 15m | 6 | 6 |
Outage episodes by size in 2021: 1 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 Jerauld 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 |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2021 | 1.5 hrs | 0.95 | 81 min | 0.83 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Dakota Energy Coop Inc | - | - | - | - | - |
| Central Electric Coop, Inc - (SD) | - | - | - | - | - |
| City of Wessington Springs | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 79% of South Dakota's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,049 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. Jerauld County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Jerauld County, SD 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/south-dakota/jerauld-county