County annual report · FIPS 46049
2021 Faulk County, SD Power Outage Report
In 2021, customers in Faulk County, SD went without power for an average of 3.3 hours, a total of 3,885 customer-hours (South Dakota average 3.4 hours). That ranks 23rd worst of 61 South Dakota counties and 1737th 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 Faulk 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 | October 9, 2021 22:45 | October 10, 2021 01:00 | 2h 15m | 806 | 1,613 |
| 2 | August 7, 2021 07:15 | August 7, 2021 09:45 | 2h 30m | 584 | 1,348 |
| 3 | February 3, 2021 22:15 | February 3, 2021 23:15 | 1h | 70 | 22 |
| 4 | September 20, 2021 08:00 | September 20, 2021 09:30 | 1h 30m | 60 | 90 |
| 5 | October 15, 2021 10:45 | October 15, 2021 14:00 | 3h 15m | 60 | 195 |
| 6 | April 8, 2021 11:30 | April 8, 2021 15:30 | 4h | 46 | 184 |
| 7 | May 2, 2021 18:30 | May 2, 2021 20:00 | 1h 30m | 46 | 69 |
| 8 | February 4, 2021 00:00 | February 4, 2021 04:45 | 4h 45m | 29 | 131 |
| 9 | September 10, 2021 02:30 | September 10, 2021 05:15 | 2h 45m | 19 | 43 |
| 10 | October 14, 2021 05:45 | October 14, 2021 06:45 | 1h | 14 | 9 |
Outage episodes by size in 2021: 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 Faulk 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 |
| FEM Electric Assn, Inc | 2018 | 3.8 hrs | 2.21 | 3.8 hrs | 2.21 |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| Dakota Energy 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 ÷ 1,168 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. Faulk County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Faulk 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/faulk-county