County annual report · FIPS 46081
2019 Lawrence County, SD Power Outage Report
In 2019, customers in Lawrence County, SD went without power for an average of 3.5 hours, a total of 54K customer-hours (South Dakota average 3.8 hours). That ranks 15th worst of 58 South Dakota counties and 1470th 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 Lawrence 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 | July 5, 2019 02:15 | July 5, 2019 02:45 | 30m | 3,785 | 1,016 |
| 2 | May 22, 2019 13:30 | May 23, 2019 21:30 | 1d 8h | 2,105 | 9,159 |
| 3 | January 23, 2019 04:00 | January 23, 2019 05:00 | 1h | 1,470 | 985 |
| 4 | November 21, 2019 16:15 | November 21, 2019 22:30 | 6h 15m | 1,408 | 819 |
| 5 | July 31, 2019 03:45 | July 31, 2019 16:30 | 12h 45m | 1,356 | 2,597 |
| 6 | October 20, 2019 21:30 | October 22, 2019 15:30 | 1d 18h | 1,238 | 3,602 |
| 7 | July 3, 2019 16:15 | July 3, 2019 18:15 | 2h | 539 | 835 |
| 8 | August 6, 2019 14:30 | September 6, 2019 20:45 | 31d 6h | 536 | 6,040 |
| 9 | July 3, 2019 11:45 | July 3, 2019 13:30 | 1h 45m | 323 | 375 |
| 10 | July 4, 2019 06:30 | July 4, 2019 06:45 | 15m | 304 | 76 |
Outage episodes by size in 2019: 22 reached 100+ customers, 6 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 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2018 | 3.8 hrs | 1.21 | 3.7 hrs | 1.17 |
| Black Hills Electric Coop, Inc | 2018 | 68 min | 0.92 | 68 min | 0.92 |
| 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 87% of South Dakota's customers in 2019; 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, 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/lawrence-county