County annual report · FIPS 46019
2023 Butte County, SD Power Outage Report
In 2023, customers in Butte County, SD went without power for an average of 3.8 hours, a total of 18K customer-hours (South Dakota average 2.3 hours). That ranks 13th worst of 61 South Dakota counties and 1720th of 2,977 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Butte County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 11, 2023 19:30 | March 12, 2023 00:45 | 5h 15m | 1,402 | 6,423 |
| 2 | August 31, 2023 20:15 | August 31, 2023 21:30 | 1h 15m | 451 | 464 |
| 3 | July 4, 2023 16:15 | July 7, 2023 18:15 | 3d 2h | 418 | 368 |
| 4 | September 4, 2023 21:30 | September 5, 2023 21:15 | 23h 45m | 373 | 2,030 |
| 5 | January 31, 2023 04:00 | January 31, 2023 09:45 | 5h 45m | 176 | 1,004 |
| 6 | March 1, 2023 03:00 | March 3, 2023 15:30 | 2d 12h | 175 | 643 |
| 7 | March 15, 2023 16:30 | March 15, 2023 17:00 | 30m | 172 | 46 |
| 8 | September 19, 2023 16:00 | September 19, 2023 17:30 | 1h 30m | 172 | 258 |
| 9 | November 6, 2023 19:15 | November 6, 2023 20:15 | 1h | 172 | 172 |
| 10 | January 23, 2023 17:45 | January 23, 2023 21:45 | 4h | 171 | 599 |
Outage episodes by size in 2023: 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 Butte County reported on EIA Form 861 for 2023, 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. | 2023 | 66 min | 0.77 | 64 min | 0.74 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Grand Electric Coop, Inc | - | - | - | - | - |
| 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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,717 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. Butte County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Butte County, SD annual power outage report, 2023, 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/2023/south-dakota/butte-county