County annual report · FIPS 55043
2024 Grant County, WI Power Outage Report
In 2024, customers in Grant County, WI went without power for an average of 2.6 hours, a total of 19K customer-hours (Wisconsin average 4.6 hours). That ranks 43rd worst of 72 Wisconsin counties and 2236th of 2,990 nationally.
Compared with WI, the US and 2023
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Grant County, 2024
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 21, 2024 22:00 | July 21, 2024 23:45 | 1h 45m | 1,849 | 1,256 |
| 2 | July 15, 2024 23:45 | July 16, 2024 04:45 | 5h | 1,692 | 5,751 |
| 3 | November 14, 2024 17:15 | November 14, 2024 18:15 | 1h | 665 | 665 |
| 4 | March 3, 2024 19:15 | March 4, 2024 02:00 | 6h 45m | 417 | 998 |
| 5 | July 10, 2024 05:00 | July 10, 2024 06:30 | 1h 30m | 346 | 419 |
| 6 | June 12, 2024 21:15 | June 13, 2024 03:00 | 5h 45m | 317 | 672 |
| 7 | June 25, 2024 05:15 | June 25, 2024 07:00 | 1h 45m | 267 | 424 |
| 8 | May 22, 2024 03:30 | May 24, 2024 00:15 | 1d 20h | 255 | 1,354 |
| 9 | April 12, 2024 02:00 | April 12, 2024 02:45 | 45m | 243 | 182 |
| 10 | July 14, 2024 10:15 | July 14, 2024 14:30 | 4h 15m | 233 | 469 |
Outage episodes by size in 2024: 16 reached 100+ customers, 2 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 Grant County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2024 | 4.9 hrs | 1.04 | 1.8 hrs | 0.74 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Scenic Rivers Energy Coop | - | - | - | - | - |
| Village of Muscoda - (WI) | - | - | - | - | - |
| City of Cuba City | - | - | - | - | - |
| Village of Hazel Green - (WI) | - | - | - | - | - |
| City of Boscobel - (WI) | - | - | - | - | - |
| City of Fennimore - (WI) | - | - | - | - | - |
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 Wisconsin's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,428 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. Grant County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grant County, WI annual power outage report, 2024, 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/2024/wisconsin/grant-county