County annual report · FIPS 46029
2021 Codington County, SD Power Outage Report
In 2021, customers in Codington County, SD went without power for an average of 0.1 hours, a total of 3,461 customer-hours (South Dakota average 3.4 hours). That ranks 59th worst of 61 South Dakota counties and 2905th of 2,974 nationally.
Compared with SD, the US and 2020
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Codington County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 3, 2021 05:15 | May 3, 2021 08:30 | 3h 15m | 612 | 972 |
| 2 | October 9, 2021 22:30 | October 9, 2021 23:30 | 1h | 500 | 418 |
| 3 | June 14, 2021 08:15 | June 14, 2021 10:45 | 2h 30m | 479 | 1,198 |
| 4 | February 17, 2021 12:00 | February 17, 2021 15:30 | 3h 30m | 122 | 397 |
| 5 | February 17, 2021 18:15 | February 17, 2021 20:15 | 2h | 122 | 244 |
| 6 | August 25, 2021 15:30 | August 25, 2021 18:00 | 2h 30m | 17 | 38 |
| 7 | September 15, 2021 13:45 | September 15, 2021 23:15 | 9h 30m | 12 | 53 |
| 8 | May 6, 2021 23:00 | May 7, 2021 02:15 | 3h 15m | 10 | 30 |
| 9 | May 11, 2021 19:00 | May 11, 2021 20:15 | 1h 15m | 8 | 10 |
| 10 | March 10, 2021 02:30 | March 10, 2021 04:30 | 2h | 7 | 14 |
Outage episodes by size in 2021: 5 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 Codington County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2021 | 86 min | 1.13 | 74 min | 1.09 |
| NorthWestern Energy - (SD) | 2021 | 1.5 hrs | 0.95 | 81 min | 0.83 |
| H-D Electric Coop Inc | 2018 | 2.6 hrs | 1.52 | 1.6 hrs | 1.14 |
| Whetstone Valley Elec Coop Inc | 2018 | 73 min | 0.64 | 42 min | 0.43 |
| Watertown Municipal Utilities | 2021 | 10 min | 0.10 | 0 min | 0.00 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Codington-Clark Elec 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 79% of South Dakota's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 24,302 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. Codington County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Codington County, SD annual power outage report, 2021, 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/2021/south-dakota/codington-county