County annual report · FIPS 46005
2021 Beadle County, SD Power Outage Report
In 2021, customers in Beadle County, SD went without power for an average of 2.1 hours, a total of 21K customer-hours (South Dakota average 3.4 hours). That ranks 39th worst of 61 South Dakota counties and 2185th 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 Beadle 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 | May 3, 2021 05:00 | May 3, 2021 09:15 | 4h 15m | 2,415 | 7,303 |
| 2 | February 16, 2021 15:30 | February 16, 2021 17:30 | 2h | 2,256 | 4,511 |
| 3 | May 31, 2021 02:45 | May 31, 2021 04:15 | 1h 30m | 593 | 890 |
| 4 | June 14, 2021 08:15 | June 14, 2021 10:45 | 2h 30m | 472 | 1,180 |
| 5 | March 29, 2021 17:45 | March 30, 2021 00:15 | 6h 30m | 371 | 1,180 |
| 6 | September 14, 2021 16:15 | September 14, 2021 17:15 | 1h | 335 | 335 |
| 7 | July 14, 2021 08:00 | July 14, 2021 12:00 | 4h | 334 | 1,336 |
| 8 | April 7, 2021 17:45 | April 7, 2021 20:45 | 3h | 313 | 395 |
| 9 | September 2, 2021 23:45 | September 3, 2021 01:00 | 1h 15m | 139 | 174 |
| 10 | August 26, 2021 14:00 | August 26, 2021 17:45 | 3h 45m | 131 | 103 |
Outage episodes by size in 2021: 11 reached 100+ customers, 2 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 Beadle 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 |
| Northern Electric Coop, Inc | 2021 | 2.0 hrs | 1.20 | 1.9 hrs | 1.18 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Dakota Energy Coop Inc | - | - | - | - | - |
| Codington-Clark Elec Coop, Inc | - | - | - | - | - |
| Kingsbury Electric Coop, 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 79% of South Dakota's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 9,787 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. Beadle County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Beadle 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/beadle-county