County annual report · FIPS 46035
2019 Davison County, SD Power Outage Report
In 2019, customers in Davison County, SD went without power for an average of 0.2 hours, a total of 1,741 customer-hours (South Dakota average 3.8 hours). That ranks 46th worst of 58 South Dakota counties and 2802nd of 2,945 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Davison County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 20, 2019 22:30 | September 21, 2019 01:00 | 2h 30m | 79 | 179 |
| 2 | July 20, 2019 12:30 | July 20, 2019 18:00 | 5h 30m | 76 | 238 |
| 3 | September 18, 2019 16:45 | September 18, 2019 18:15 | 1h 30m | 66 | 83 |
| 4 | October 30, 2019 23:30 | October 31, 2019 03:30 | 4h | 66 | 248 |
| 5 | August 18, 2019 02:00 | August 18, 2019 09:00 | 7h | 51 | 304 |
| 6 | August 20, 2019 16:00 | August 20, 2019 17:30 | 1h 30m | 33 | 47 |
| 7 | August 21, 2019 14:15 | August 21, 2019 20:00 | 5h 45m | 33 | 190 |
| 8 | November 30, 2019 10:15 | November 30, 2019 17:30 | 7h 15m | 27 | 154 |
| 9 | August 10, 2019 20:30 | August 10, 2019 21:45 | 1h 15m | 21 | 26 |
| 10 | December 27, 2019 14:45 | December 27, 2019 21:30 | 6h 45m | 18 | 75 |
Outage episodes by size in 2019: 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 Davison County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2018 | 1.9 hrs | 1.24 | 1.6 hrs | 1.13 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Central Electric Coop, Inc - (SD) | - | - | - | - | - |
| Douglas 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 87% of South Dakota's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 11,593 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. Davison County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Davison County, SD annual power outage report, 2019, 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/2019/south-dakota/davison-county