County annual report · FIPS 46069
2025 Hyde County, SD Power Outage Report
In 2025, customers in Hyde County, SD went without power for an average of 1.1 hours, a total of 646 customer-hours (South Dakota average 6.5 hours). That ranks 54th worst of 65 South Dakota counties and 2743rd 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 Hyde 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 15, 2025 19:15 | May 15, 2025 23:15 | 4h | 471 | 137 |
| 2 | July 23, 2025 14:30 | July 24, 2025 16:00 | 1d 1h | 359 | 143 |
| 3 | February 24, 2025 21:45 | February 24, 2025 23:30 | 1h 45m | 240 | 88 |
| 4 | December 17, 2025 16:00 | December 17, 2025 17:45 | 1h 45m | 86 | 151 |
| 5 | November 18, 2025 14:45 | November 18, 2025 17:00 | 2h 15m | 18 | 21 |
| 6 | October 22, 2025 14:45 | October 22, 2025 15:00 | 15m | 8 | 2 |
| 7 | October 22, 2025 17:00 | October 22, 2025 17:30 | 30m | 8 | 4 |
| 8 | October 6, 2025 20:00 | October 6, 2025 23:00 | 3h | 7 | 21 |
| 9 | December 4, 2025 16:15 | December 4, 2025 21:15 | 5h | 7 | 35 |
| 10 | December 15, 2025 20:45 | December 15, 2025 23:00 | 2h 15m | 6 | 11 |
Outage episodes by size in 2025: 3 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 Hyde 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 | - | - | - | - | - |
| Dakota Energy 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 ÷ 615 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. Hyde County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Hyde 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/hyde-county