County annual report · FIPS 46043
2020 Douglas County, SD Power Outage Report
In 2020, customers in Douglas County, SD went without power for an average of 5.5 hours, a total of 9,536 customer-hours (South Dakota average 4.6 hours). That ranks 20th worst of 62 South Dakota counties and 1323rd of 3,019 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Douglas 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 11:45 | June 9, 2020 18:45 | 7h | 973 | 4,445 |
| 2 | August 31, 2020 13:15 | August 31, 2020 14:30 | 1h 15m | 834 | 1,043 |
| 3 | September 6, 2020 03:15 | September 6, 2020 04:45 | 1h 30m | 834 | 1,115 |
| 4 | September 7, 2020 03:30 | September 7, 2020 05:00 | 1h 30m | 834 | 1,179 |
| 5 | October 22, 2020 11:45 | October 22, 2020 12:45 | 1h | 773 | 773 |
| 6 | October 5, 2020 08:00 | October 5, 2020 10:45 | 2h 45m | 123 | 338 |
| 7 | December 23, 2020 17:15 | December 23, 2020 20:30 | 3h 15m | 123 | 400 |
| 8 | July 31, 2020 15:30 | July 31, 2020 21:00 | 5h 30m | 101 | 215 |
| 9 | August 15, 2020 23:00 | August 16, 2020 00:45 | 1h 45m | 5 | 7 |
| 10 | July 25, 2020 15:00 | July 25, 2020 17:00 | 2h | 4 | 8 |
Outage episodes by size in 2020: 8 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 Douglas 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 |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2020 | 2.6 hrs | 1.54 | 1.9 hrs | 1.28 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| Douglas Electric Coop, Inc | - | - | - | - | - |
| Charles Mix Electric Assn, 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 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,745 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. Douglas County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Douglas 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2020/south-dakota/douglas-county