County annual report · FIPS 46027
2023 Clay County, SD Power Outage Report
In 2023, customers in Clay County, SD went without power for an average of 0.0 hours, a total of 180 customer-hours (South Dakota average 2.3 hours). That ranks 58th worst of 61 South Dakota counties and 2949th of 2,977 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 Clay County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 12, 2023 09:30 | July 12, 2023 10:45 | 1h 15m | 72 | 90 |
| 2 | July 30, 2023 00:30 | July 30, 2023 01:30 | 1h | 72 | 19 |
| 3 | July 30, 2023 12:00 | July 30, 2023 13:30 | 1h 30m | 72 | 22 |
| 4 | August 6, 2023 00:30 | August 6, 2023 01:15 | 45m | 72 | 19 |
| 5 | September 25, 2023 18:15 | September 25, 2023 19:45 | 1h 30m | 7 | 11 |
| 6 | September 7, 2023 16:00 | September 7, 2023 17:30 | 1h 30m | 6 | 9 |
| 7 | July 21, 2023 15:00 | July 21, 2023 15:15 | 15m | 1 | 0 |
| 8 | September 11, 2023 18:30 | September 11, 2023 20:15 | 1h 45m | 1 | 2 |
| 9 | September 22, 2023 16:30 | September 22, 2023 17:00 | 30m | 1 | 1 |
| 10 | September 22, 2023 17:45 | September 22, 2023 19:00 | 1h 15m | 1 | 1 |
Outage episodes by size in 2023: 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 Clay County reported on EIA Form 861 for 2023, 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 | - | - | - | - | - |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| Clay-Union Electric Corp | - | - | - | - | - |
| City of Vermillion - (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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,444 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. Clay County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Clay County, SD annual power outage report, 2023, 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/2023/south-dakota/clay-county