County annual report · FIPS 46053
2024 Gregory County, SD Power Outage Report
In 2024, customers in Gregory County, SD went without power for an average of 0.6 hours, a total of 1,528 customer-hours (South Dakota average 2.3 hours). That ranks 56th worst of 65 South Dakota counties and 2829th of 2,990 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Gregory County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 20, 2024 16:15 | November 20, 2024 18:45 | 2h 30m | 129 | 156 |
| 2 | May 28, 2024 16:45 | May 28, 2024 17:00 | 15m | 95 | 24 |
| 3 | May 25, 2024 01:45 | May 28, 2024 12:30 | 3d 10h | 79 | 102 |
| 4 | September 17, 2024 16:45 | September 17, 2024 17:00 | 15m | 62 | 16 |
| 5 | August 15, 2024 21:15 | August 15, 2024 23:15 | 2h | 58 | 90 |
| 6 | September 16, 2024 12:15 | September 16, 2024 15:00 | 2h 45m | 42 | 65 |
| 7 | August 3, 2024 15:00 | August 3, 2024 17:30 | 2h 30m | 40 | 100 |
| 8 | November 14, 2024 16:45 | November 14, 2024 19:15 | 2h 30m | 38 | 95 |
| 9 | September 10, 2024 14:00 | September 10, 2024 15:00 | 1h | 36 | 36 |
| 10 | June 14, 2024 01:30 | June 14, 2024 02:15 | 45m | 33 | 17 |
Outage episodes by size in 2024: 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 Gregory 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 |
|---|---|---|---|---|---|
| Rosebud Electric Coop Inc | 2024 | 1.9 hrs | 0.84 | 1.6 hrs | 0.76 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| City of Burke - (SD) | - | - | - | - | - |
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 ÷ 2,673 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. Gregory County has data for 2022, 2024–2025.
Cite this report
MassOutage (massoutage.com), Gregory 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/gregory-county