County annual report · FIPS 46117
2019 Stanley County, SD Power Outage Report
In 2019, customers in Stanley County, SD went without power for an average of 0.4 hours, a total of 887 customer-hours (South Dakota average 3.8 hours). That ranks 38th worst of 58 South Dakota counties and 2721st 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 Stanley 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 | November 21, 2019 22:00 | November 22, 2019 14:30 | 16h 30m | 145 | 236 |
| 2 | July 5, 2019 07:45 | July 5, 2019 10:15 | 2h 30m | 68 | 109 |
| 3 | July 17, 2019 12:45 | July 18, 2019 03:30 | 14h 45m | 64 | 30 |
| 4 | July 24, 2019 16:15 | July 24, 2019 17:30 | 1h 15m | 63 | 39 |
| 5 | August 23, 2019 16:15 | August 23, 2019 17:00 | 45m | 53 | 28 |
| 6 | July 17, 2019 01:00 | July 17, 2019 04:15 | 3h 15m | 28 | 91 |
| 7 | July 17, 2019 09:45 | July 17, 2019 12:00 | 2h 15m | 27 | 61 |
| 8 | August 9, 2019 20:30 | August 9, 2019 21:00 | 30m | 22 | 11 |
| 9 | August 12, 2019 11:15 | August 12, 2019 12:30 | 1h 15m | 22 | 25 |
| 10 | July 28, 2019 13:00 | July 28, 2019 15:30 | 2h 30m | 15 | 31 |
Outage episodes by size in 2019: 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 Stanley 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 |
|---|---|---|---|---|---|
| West Central Electric Coop Inc - (SD) | 2018 | 3.7 hrs | 1.25 | 1.5 hrs | 1.25 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| City of Fort Pierre - (SD) | - | - | - | - | - |
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 ÷ 2,520 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. Stanley County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Stanley 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/stanley-county