County annual report · FIPS 46137
2022 Ziebach County, SD Power Outage Report
In 2022, customers in Ziebach County, SD went without power for an average of 0.5 hours, a total of 749 customer-hours (South Dakota average 6.9 hours). That ranks 60th worst of 63 South Dakota counties and 2826th of 2,976 nationally.
Compared with SD, the US and 2021
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Ziebach County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 12, 2022 04:15 | June 12, 2022 16:30 | 12h 15m | 32 | 322 |
| 2 | October 21, 2022 15:15 | October 21, 2022 17:45 | 2h 30m | 32 | 80 |
| 3 | March 15, 2022 21:45 | March 16, 2022 00:30 | 2h 45m | 3 | 8 |
| 4 | April 12, 2022 13:30 | April 12, 2022 14:00 | 30m | 3 | 2 |
| 5 | April 13, 2022 02:30 | April 13, 2022 14:30 | 12h | 3 | 36 |
| 6 | April 24, 2022 01:00 | April 24, 2022 01:15 | 15m | 3 | 1 |
| 7 | April 24, 2022 18:30 | April 24, 2022 19:00 | 30m | 3 | 2 |
| 8 | July 5, 2022 14:00 | July 5, 2022 14:45 | 45m | 3 | 2 |
| 9 | August 16, 2022 20:15 | August 17, 2022 14:45 | 18h 30m | 3 | 56 |
| 10 | September 13, 2022 18:45 | September 13, 2022 21:45 | 3h | 3 | 9 |
Outage episodes by size in 2022: 0 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 Ziebach 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 |
|---|---|---|---|---|---|
| West River Electric Assn Inc | 2022 | 47 min | 0.48 | 47 min | 0.48 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Grand Electric Coop, Inc | - | - | - | - | - |
| Moreau-Grand 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 89% of South Dakota's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,374 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. Ziebach County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Ziebach 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2022/south-dakota/ziebach-county