County annual report · FIPS 46095
2023 Mellette County, SD Power Outage Report
In 2023, customers in Mellette County, SD went without power for an average of 1.1 hours, a total of 447 customer-hours (South Dakota average 2.3 hours). That ranks 45th worst of 61 South Dakota counties and 2633rd of 2,977 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Mellette County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 13, 2023 00:30 | August 13, 2023 02:45 | 2h 15m | 17 | 34 |
| 2 | October 12, 2023 22:45 | October 13, 2023 00:00 | 1h 15m | 17 | 21 |
| 3 | August 6, 2023 04:15 | August 6, 2023 12:15 | 8h | 15 | 116 |
| 4 | January 13, 2023 18:30 | January 13, 2023 22:30 | 4h | 9 | 21 |
| 5 | January 26, 2023 22:45 | January 27, 2023 02:15 | 3h 30m | 5 | 18 |
| 6 | October 19, 2023 20:45 | October 19, 2023 21:30 | 45m | 5 | 4 |
| 7 | June 16, 2023 17:45 | June 16, 2023 20:00 | 2h 15m | 4 | 9 |
| 8 | June 21, 2023 02:00 | June 21, 2023 04:15 | 2h 15m | 4 | 9 |
| 9 | September 20, 2023 15:15 | September 20, 2023 16:30 | 1h 15m | 4 | 5 |
| 10 | September 23, 2023 10:00 | September 23, 2023 11:00 | 1h | 4 | 4 |
Outage episodes by size in 2023: 0 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 Mellette County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| West Central Electric Coop Inc - (SD) | 2018 | 3.7 hrs | 1.25 | 1.5 hrs | 1.25 |
| LaCreek Electric Assn, Inc | - | - | - | - | - |
| Cherry-Todd Electric Coop, Inc | - | - | - | - | - |
| Rosebud 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 n/a of South Dakota's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 403 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. Mellette County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Mellette County, SD annual power outage report, 2023, 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/2023/south-dakota/mellette-county