County annual report · FIPS 46105
2019 Perkins County, SD Power Outage Report
In 2019, customers in Perkins County, SD went without power for an average of 19.2 hours, a total of 17K customer-hours (South Dakota average 3.8 hours). That ranks 2nd worst of 58 South Dakota counties and 226th of 2,945 nationally.
Compared with SD, the US and 2018
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Perkins 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 5, 2019 04:15 | September 5, 2019 13:30 | 9h 15m | 1,188 | 11K |
| 2 | September 18, 2019 00:15 | September 18, 2019 03:15 | 3h | 803 | 362 |
| 3 | June 27, 2019 09:15 | June 27, 2019 15:45 | 6h 30m | 195 | 588 |
| 4 | July 1, 2019 22:45 | July 2, 2019 13:45 | 15h | 135 | 2,025 |
| 5 | July 2, 2019 19:15 | July 3, 2019 00:30 | 5h 15m | 135 | 709 |
| 6 | June 27, 2019 17:00 | June 27, 2019 22:00 | 5h | 79 | 178 |
| 7 | December 15, 2019 23:15 | December 16, 2019 00:00 | 45m | 79 | 59 |
| 8 | July 27, 2019 17:30 | July 27, 2019 18:15 | 45m | 74 | 51 |
| 9 | August 5, 2019 21:30 | August 6, 2019 15:00 | 17h 30m | 68 | 1,190 |
| 10 | August 7, 2019 15:45 | August 7, 2019 16:45 | 1h | 68 | 68 |
Outage episodes by size in 2019: 5 reached 100+ customers, 1 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 Perkins 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 |
|---|---|---|---|---|---|
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| Grand 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 ÷ 890 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. Perkins County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Perkins 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/). https://massoutage.com/reports/2019/south-dakota/perkins-county