County annual report · FIPS 46021
2025 Campbell County, SD Power Outage Report
In 2025, customers in Campbell County, SD went without power for an average of 1.3 hours, a total of 724 customer-hours (South Dakota average 6.5 hours). That ranks 50th worst of 65 South Dakota counties and 2687th 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 Campbell County, 2025
The 6 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 2, 2025 00:45 | April 2, 2025 03:00 | 2h 15m | 226 | 509 |
| 2 | December 10, 2025 04:00 | December 10, 2025 09:15 | 5h 15m | 26 | 112 |
| 3 | June 21, 2025 03:00 | June 21, 2025 03:30 | 30m | 20 | 10 |
| 4 | December 18, 2025 16:45 | December 18, 2025 21:45 | 5h | 18 | 67 |
| 5 | December 18, 2025 12:15 | December 18, 2025 14:00 | 1h 45m | 13 | 20 |
| 6 | December 29, 2025 16:00 | December 29, 2025 17:15 | 1h 15m | 5 | 6 |
Outage episodes by size in 2025: 1 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 Campbell 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 |
|---|---|---|---|---|---|
| Montana-Dakota Utilities Co | 2024 | 2.9 hrs | 1.26 | 2.1 hrs | 1.10 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Cam Wal 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 ÷ 576 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. Campbell County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Campbell 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/campbell-county