County annual report · FIPS 46081
2025 Lawrence County, SD Power Outage Report
In 2025, customers in Lawrence County, SD went without power for an average of 11.4 hours, a total of 177K customer-hours (South Dakota average 6.5 hours). That ranks 9th worst of 65 South Dakota counties and 700th of 3,000 nationally.
Compared with SD, the US and 2024
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Lawrence County, 2025
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 13, 2025 19:45 | November 14, 2025 05:00 | 9h 15m | 13,759 | 55K |
| 2 | May 18, 2025 20:45 | May 19, 2025 04:15 | 7h 30m | 5,991 | 6,338 |
| 3 | July 22, 2025 00:15 | July 23, 2025 17:00 | 1d 16h | 5,512 | 5,463 |
| 4 | December 18, 2025 07:45 | December 24, 2025 23:00 | 6d 15h | 2,269 | 91K |
| 5 | December 25, 2025 12:00 | December 26, 2025 20:00 | 1d 8h | 887 | 2,528 |
| 6 | May 16, 2025 15:15 | May 16, 2025 19:30 | 4h 15m | 739 | 419 |
| 7 | November 25, 2025 07:15 | November 25, 2025 18:45 | 11h 30m | 667 | 4,444 |
| 8 | March 14, 2025 17:30 | March 14, 2025 23:00 | 5h 30m | 649 | 3,302 |
| 9 | November 4, 2025 15:45 | November 4, 2025 16:15 | 30m | 529 | 152 |
| 10 | May 15, 2025 15:45 | May 15, 2025 17:15 | 1h 30m | 372 | 94 |
Outage episodes by size in 2025: 22 reached 100+ customers, 4 reached 1,000+ customers, 1 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 2025, 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. | 2024 | 40 min | 0.70 | 40 min | 0.70 |
| Black Hills Electric Coop, Inc | 2024 | 3.8 hrs | 1.03 | 1.7 hrs | 0.77 |
| 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 2025; 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, 2025, 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/2025/south-dakota/lawrence-county