County annual report · FIPS 46035
2025 Davison County, SD Power Outage Report
In 2025, customers in Davison County, SD went without power for an average of 1.5 hours, a total of 17K customer-hours (South Dakota average 6.5 hours). That ranks 46th worst of 65 South Dakota counties and 2609th of 3,000 nationally.
Compared with SD, the US and 2024
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Davison County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 29, 2025 22:00 | July 30, 2025 20:00 | 22h | 1,458 | 3,378 |
| 2 | December 10, 2025 05:00 | December 10, 2025 08:15 | 3h 15m | 949 | 2,573 |
| 3 | June 22, 2025 11:30 | June 22, 2025 14:45 | 3h 15m | 854 | 672 |
| 4 | June 5, 2025 21:45 | June 5, 2025 22:00 | 15m | 686 | 172 |
| 5 | August 22, 2025 00:45 | August 22, 2025 01:45 | 1h | 533 | 533 |
| 6 | November 9, 2025 20:45 | November 9, 2025 22:30 | 1h 45m | 533 | 141 |
| 7 | August 6, 2025 06:15 | August 6, 2025 13:30 | 7h 15m | 493 | 2,450 |
| 8 | October 2, 2025 18:00 | October 2, 2025 21:15 | 3h 15m | 450 | 1,245 |
| 9 | June 25, 2025 12:00 | June 25, 2025 16:15 | 4h 15m | 362 | 175 |
| 10 | May 19, 2025 15:00 | May 19, 2025 15:30 | 30m | 218 | 109 |
Outage episodes by size in 2025: 18 reached 100+ customers, 1 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 Davison County reported on EIA Form 861 for 2025, 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) | 2024 | 76 min | 0.70 | 66 min | 0.65 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Central Electric Coop, Inc - (SD) | - | - | - | - | - |
| Douglas 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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 11,593 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. Davison County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Davison County, SD annual power outage report, 2025, 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/2025/south-dakota/davison-county