County annual report · FIPS 46097
2020 Miner County, SD Power Outage Report
In 2020, customers in Miner County, SD went without power for an average of 6.3 hours, a total of 6,747 customer-hours (South Dakota average 4.6 hours). That ranks 14th worst of 62 South Dakota counties and 1192nd of 3,019 nationally.
Compared with SD, the US and 2019
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Miner County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 25, 2020 23:30 | June 26, 2020 01:15 | 1h 45m | 353 | 180 |
| 2 | June 6, 2020 23:15 | June 7, 2020 02:15 | 3h | 352 | 792 |
| 3 | August 10, 2020 10:15 | August 10, 2020 16:15 | 6h | 348 | 624 |
| 4 | January 25, 2020 10:15 | January 25, 2020 14:15 | 4h | 242 | 968 |
| 5 | August 15, 2020 22:15 | August 15, 2020 23:45 | 1h 30m | 41 | 17 |
| 6 | March 19, 2020 22:30 | March 20, 2020 01:00 | 2h 30m | 37 | 59 |
| 7 | December 3, 2020 14:45 | December 7, 2020 16:00 | 4d 1h | 35 | 3,184 |
| 8 | July 20, 2020 19:15 | July 20, 2020 20:30 | 1h 15m | 19 | 24 |
| 9 | July 21, 2020 10:30 | July 21, 2020 12:00 | 1h 30m | 19 | 29 |
| 10 | July 21, 2020 13:15 | July 21, 2020 16:00 | 2h 45m | 19 | 52 |
Outage episodes by size in 2020: 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 Miner County reported on EIA Form 861 for 2020, 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 |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | 2020 | 1.7 hrs | 0.84 | 68 min | 0.71 |
| Sioux Valley SW Elec Coop | 2020 | 1.5 hrs | 2.73 | 83 min | 2.32 |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| Dakota Energy Coop Inc | - | - | - | - | - |
| Central Electric Coop, Inc - (SD) | - | - | - | - | - |
| City of Howard - (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 79% of South Dakota's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,069 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. Miner County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Miner County, SD annual power outage report, 2020, 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/2020/south-dakota/miner-county