County annual report · FIPS 46105
2017 Perkins County, SD Power Outage Report
In 2017, customers in Perkins County, SD went without power for an average of 1.7 hours, a total of 1,545 customer-hours (South Dakota average 0.8 hours). That ranks 5th worst of 26 South Dakota counties and 1731st of 2,786 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Perkins County, 2017
The 7 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 10, 2017 02:15 | April 10, 2017 03:30 | 1h 15m | 759 | 948 |
| 2 | June 20, 2017 16:15 | June 20, 2017 18:00 | 1h 45m | 7 | 12 |
| 3 | August 8, 2017 21:00 | August 8, 2017 21:30 | 30m | 7 | 2 |
| 4 | August 12, 2017 12:45 | August 12, 2017 13:00 | 15m | 7 | 2 |
| 5 | March 19, 2017 18:00 | March 19, 2017 19:00 | 1h | 4 | 4 |
| 6 | June 26, 2017 15:45 | July 6, 2017 15:45 | 10d | 3 | 575 |
| 7 | February 18, 2017 03:30 | February 18, 2017 04:30 | 1h | 2 | 2 |
Outage episodes by size in 2017: 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 Perkins County reported on EIA Form 861 for 2017, 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 n/a of South Dakota's customers in 2017; 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, 2017, 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/2017/south-dakota/perkins-county