County annual report · FIPS 46091
2019 Marshall County, SD Power Outage Report
In 2019, customers in Marshall County, SD went without power for an average of 5.0 hours, a total of 12K customer-hours (South Dakota average 3.8 hours). That ranks 11th worst of 58 South Dakota counties and 1101st of 2,945 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Marshall County, 2019
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 5, 2019 22:00 | October 5, 2019 22:30 | 30m | 691 | 346 |
| 2 | December 27, 2019 17:30 | December 27, 2019 21:00 | 3h 30m | 685 | 1,370 |
| 3 | December 29, 2019 22:15 | December 31, 2019 00:15 | 1d 2h | 203 | 3,496 |
| 4 | November 7, 2019 16:00 | November 7, 2019 21:30 | 5h 30m | 104 | 283 |
| 5 | September 27, 2019 01:15 | September 27, 2019 05:30 | 4h 15m | 87 | 350 |
| 6 | July 15, 2019 15:15 | July 15, 2019 17:45 | 2h 30m | 85 | 198 |
| 7 | August 15, 2019 22:45 | August 16, 2019 01:45 | 3h | 83 | 147 |
| 8 | July 12, 2019 20:45 | July 15, 2019 14:00 | 2d 17h | 75 | 4,894 |
| 9 | August 7, 2019 13:15 | August 7, 2019 14:45 | 1h 30m | 75 | 63 |
| 10 | November 21, 2019 16:15 | November 21, 2019 18:30 | 2h 15m | 59 | 133 |
Outage episodes by size in 2019: 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 Marshall County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2018 | 1.8 hrs | 1.30 | 1.7 hrs | 1.23 |
| NorthWestern Energy - (SD) | 2018 | 1.9 hrs | 1.24 | 1.6 hrs | 1.13 |
| Northern Electric Coop, Inc | 2018 | 3.3 hrs | 1.45 | 70 min | 1.25 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Traverse Electric Coop, Inc | - | - | - | - | - |
| Lake Region Electric Assn, Inc - (SD) | - | - | - | - | - |
| Town of Langford- (SD) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 87% of South Dakota's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,509 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. Marshall County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Marshall County, SD annual power outage report, 2019, 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/2019/south-dakota/marshall-county