County annual report · FIPS 46081
2017 Lawrence County, SD Power Outage Report
In 2017, customers in Lawrence County, SD went without power for an average of 0.6 hours, a total of 9,198 customer-hours (South Dakota average 0.8 hours). That ranks 14th worst of 26 South Dakota counties and 2244th of 2,786 nationally.
Compared with SD, the US and 2016
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Lawrence County, 2017
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 15, 2017 19:15 | September 15, 2017 20:30 | 1h 15m | 1,535 | 1,885 |
| 2 | December 5, 2017 16:00 | December 6, 2017 00:15 | 8h 15m | 973 | 775 |
| 3 | February 23, 2017 16:30 | February 23, 2017 18:15 | 1h 45m | 921 | 1,326 |
| 4 | November 25, 2017 17:30 | November 25, 2017 19:15 | 1h 45m | 497 | 870 |
| 5 | October 23, 2017 05:45 | October 23, 2017 12:45 | 7h | 333 | 478 |
| 6 | November 29, 2017 12:15 | November 29, 2017 23:30 | 11h 15m | 220 | 535 |
| 7 | July 17, 2017 14:15 | July 17, 2017 21:45 | 7h 30m | 211 | 1,168 |
| 8 | September 8, 2017 20:15 | September 8, 2017 21:00 | 45m | 143 | 97 |
| 9 | November 2, 2017 06:45 | November 2, 2017 13:15 | 6h 30m | 127 | 216 |
| 10 | July 22, 2017 00:30 | July 22, 2017 02:45 | 2h 15m | 126 | 77 |
Outage episodes by size in 2017: 14 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 Lawrence 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2017 | 6.3 hrs | 1.90 | 68 min | 0.58 |
| Black Hills Electric Coop, Inc | 2017 | 1.6 hrs | 0.96 | 1.6 hrs | 0.96 |
| Black Hills Energy | - | - | - | - | - |
| Butte 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 ÷ 15,540 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. Lawrence County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Lawrence 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2017/south-dakota/lawrence-county