County annual report · FIPS 46027
2020 Clay County, SD Power Outage Report
In 2020, customers in Clay County, SD went without power for an average of 0.2 hours, a total of 1,955 customer-hours (South Dakota average 4.6 hours). That ranks 57th worst of 62 South Dakota counties and 2895th of 3,019 nationally.
Compared with SD, the US and 2019
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Clay County, 2020
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 9, 2020 22:30 | June 10, 2020 04:00 | 5h 30m | 100 | 111 |
| 2 | April 27, 2020 16:00 | April 28, 2020 13:00 | 21h | 99 | 152 |
| 3 | February 14, 2020 20:30 | February 14, 2020 22:00 | 1h 30m | 66 | 25 |
| 4 | March 5, 2020 17:30 | March 5, 2020 18:00 | 30m | 11 | 6 |
| 5 | July 25, 2020 11:30 | July 25, 2020 12:30 | 1h | 10 | 6 |
| 6 | June 18, 2020 10:45 | June 18, 2020 12:15 | 1h 30m | 9 | 11 |
| 7 | July 25, 2020 07:45 | July 25, 2020 10:00 | 2h 15m | 9 | 20 |
| 8 | December 23, 2020 17:15 | December 28, 2020 15:00 | 4d 21h | 9 | 1,047 |
| 9 | August 30, 2020 06:30 | August 30, 2020 07:30 | 1h | 8 | 8 |
| 10 | September 3, 2020 13:45 | September 3, 2020 14:30 | 45m | 8 | 6 |
Outage episodes by size in 2020: 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 Clay County reported on EIA Form 861 for 2020, 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 79% of South Dakota's customers in 2020; 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, 2020, 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/2020/south-dakota/clay-county