County annual report · FIPS 55043
2018 Grant County, WI Power Outage Report
In 2018, customers in Grant County, WI went without power for an average of 1.9 hours, a total of 14K customer-hours (Wisconsin average 1.7 hours). That ranks 30th worst of 71 Wisconsin counties and 1894th of 2,798 nationally.
Compared with WI, the US and 2017
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Grant County, 2018
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 14, 2018 13:00 | August 14, 2018 19:30 | 6h 30m | 1,781 | 937 |
| 2 | September 2, 2018 20:30 | September 2, 2018 23:45 | 3h 15m | 1,018 | 2,250 |
| 3 | July 22, 2018 07:00 | July 22, 2018 12:15 | 5h 15m | 1,007 | 1,240 |
| 4 | May 11, 2018 21:00 | May 11, 2018 22:30 | 1h 30m | 622 | 933 |
| 5 | March 6, 2018 15:45 | March 6, 2018 16:15 | 30m | 620 | 310 |
| 6 | January 27, 2018 07:45 | January 27, 2018 10:15 | 2h 30m | 377 | 763 |
| 7 | June 17, 2018 09:45 | June 17, 2018 12:45 | 3h | 286 | 433 |
| 8 | March 9, 2018 16:15 | March 9, 2018 18:15 | 2h | 275 | 474 |
| 9 | November 6, 2018 00:00 | November 6, 2018 01:30 | 1h 30m | 232 | 348 |
| 10 | August 7, 2018 13:30 | August 7, 2018 19:30 | 6h | 224 | 177 |
Outage episodes by size in 2018: 20 reached 100+ customers, 3 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 2018, 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 | 2018 | 2.0 hrs | 0.73 | 70 min | 0.59 |
| 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 83% of Wisconsin's customers in 2018; 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, 2018, 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/2018/wisconsin/grant-county