County annual report · FIPS 46053
2022 Gregory County, SD Power Outage Report
In 2022, customers in Gregory County, SD went without power for an average of 2.0 hours, a total of 5,475 customer-hours (South Dakota average 6.9 hours). That ranks 46th worst of 63 South Dakota counties and 2277th of 2,976 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Gregory County, 2022
The 3 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 15, 2022 13:00 | December 15, 2022 21:30 | 8h 30m | 300 | 2,550 |
| 2 | December 16, 2022 14:45 | December 16, 2022 23:30 | 8h 45m | 300 | 2,625 |
| 3 | December 14, 2022 20:45 | December 14, 2022 22:45 | 2h | 150 | 300 |
Outage episodes by size in 2022: 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 Gregory County reported on EIA Form 861 for 2022, 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 |
|---|---|---|---|---|---|
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Rosebud Electric Coop Inc | - | - | - | - | - |
| 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 89% of South Dakota's customers in 2022; 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, 2022, 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/). https://massoutage.com/reports/2022/south-dakota/gregory-county