County annual report · FIPS 46089
2024 McPherson County, SD Power Outage Report
In 2024, customers in McPherson County, SD went without power for an average of 1.8 hours, a total of 2,206 customer-hours (South Dakota average 2.3 hours). That ranks 30th worst of 65 South Dakota counties and 2465th of 2,990 nationally.
Compared with SD, the US and 2023
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in McPherson County, 2024
The 9 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2024 01:15 | August 29, 2024 02:00 | 45m | 603 | 451 |
| 2 | October 19, 2024 17:30 | October 19, 2024 18:30 | 1h | 322 | 322 |
| 3 | June 14, 2024 03:30 | June 14, 2024 03:45 | 15m | 313 | 78 |
| 4 | June 6, 2024 19:00 | June 6, 2024 20:30 | 1h 30m | 297 | 187 |
| 5 | February 10, 2024 20:00 | February 10, 2024 21:30 | 1h 30m | 8 | 12 |
| 6 | September 6, 2024 05:45 | September 6, 2024 06:45 | 1h | 7 | 7 |
| 7 | January 25, 2024 19:00 | January 25, 2024 19:15 | 15m | 5 | 1 |
| 8 | May 14, 2024 14:45 | May 24, 2024 00:15 | 9d 9h | 5 | 1,121 |
| 9 | May 24, 2024 09:15 | May 24, 2024 14:30 | 5h 15m | 5 | 26 |
Outage episodes by size in 2024: 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 McPherson County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| Montana-Dakota Utilities Co | 2024 | 2.9 hrs | 1.26 | 2.1 hrs | 1.10 |
| Northern Electric Coop, Inc | 2024 | 50 min | 0.67 | 50 min | 0.67 |
| FEM Electric Assn, Inc | 2018 | 3.8 hrs | 2.21 | 3.8 hrs | 2.21 |
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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,223 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. McPherson County has data for 2017, 2019–2025.
Cite this report
MassOutage (massoutage.com), McPherson County, SD annual power outage report, 2024, 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/2024/south-dakota/mcpherson-county