County annual report · FIPS 46107
2025 Potter County, SD Power Outage Report
In 2025, customers in Potter County, SD went without power for an average of 2.5 hours, a total of 2,843 customer-hours (South Dakota average 6.5 hours). That ranks 32nd worst of 65 South Dakota counties and 2229th 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 Potter 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 | May 16, 2025 01:45 | May 16, 2025 03:00 | 1h 15m | 219 | 167 |
| 2 | January 10, 2025 01:00 | January 10, 2025 06:45 | 5h 45m | 85 | 354 |
| 3 | February 12, 2025 18:30 | February 22, 2025 18:30 | 10d | 15 | 2,156 |
| 4 | June 21, 2025 16:30 | June 22, 2025 05:15 | 12h 45m | 12 | 141 |
| 5 | May 15, 2025 23:15 | May 16, 2025 00:15 | 1h | 8 | 4 |
| 6 | June 29, 2025 13:00 | June 29, 2025 14:30 | 1h 30m | 8 | 8 |
| 7 | May 19, 2025 10:45 | May 19, 2025 11:45 | 1h | 7 | 7 |
| 8 | July 27, 2025 13:15 | July 27, 2025 13:45 | 30m | 7 | 4 |
| 9 | September 22, 2025 15:30 | September 22, 2025 15:45 | 15m | 6 | 2 |
| 10 | September 22, 2025 18:30 | September 22, 2025 18:45 | 15m | 6 | 2 |
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 Potter 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 ÷ 1,138 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. Potter County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Potter 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/potter-county