County annual report · FIPS 55043
2020 Grant County, WI Power Outage Report
In 2020, customers in Grant County, WI went without power for an average of 4.7 hours, a total of 35K customer-hours (Wisconsin average 1.8 hours). That ranks 8th worst of 72 Wisconsin counties and 1458th of 3,019 nationally.
Compared with WI, the US and 2019
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Grant County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 10, 2020 18:00 | August 11, 2020 10:15 | 16h 15m | 4,608 | 23K |
| 2 | March 29, 2020 02:00 | March 29, 2020 10:30 | 8h 30m | 1,403 | 2,234 |
| 3 | February 26, 2020 16:45 | February 26, 2020 22:00 | 5h 15m | 815 | 1,023 |
| 4 | July 17, 2020 09:15 | July 17, 2020 11:15 | 2h | 770 | 1,354 |
| 5 | July 15, 2020 02:45 | July 15, 2020 06:15 | 3h 30m | 643 | 958 |
| 6 | June 17, 2020 13:45 | June 17, 2020 15:30 | 1h 45m | 567 | 580 |
| 7 | January 16, 2020 23:45 | January 17, 2020 01:30 | 1h 45m | 370 | 609 |
| 8 | July 16, 2020 09:15 | July 16, 2020 09:45 | 30m | 367 | 184 |
| 9 | May 14, 2020 03:30 | May 14, 2020 05:15 | 1h 45m | 219 | 347 |
| 10 | February 1, 2020 23:30 | February 2, 2020 00:45 | 1h 15m | 216 | 270 |
Outage episodes by size in 2020: 13 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 2020, 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 | 2020 | 2.3 hrs | 0.87 | 1.6 hrs | 0.70 |
| 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 84% of Wisconsin's customers in 2020; 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, 2020, 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/2020/wisconsin/grant-county