County annual report · FIPS 55019
2025 Clark County, WI Power Outage Report
In 2025, customers in Clark County, WI went without power for an average of 2.3 hours, a total of 37K customer-hours (Wisconsin average 3.9 hours). That ranks 36th worst of 72 Wisconsin counties and 2291st of 3,000 nationally.
Compared with WI, the US and 2024
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Clark 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 | May 15, 2025 22:15 | May 17, 2025 23:30 | 2d 1h | 2,505 | 27K |
| 2 | July 14, 2025 20:30 | July 14, 2025 21:15 | 45m | 1,242 | 621 |
| 3 | April 2, 2025 14:00 | April 2, 2025 20:30 | 6h 30m | 843 | 1,361 |
| 4 | July 29, 2025 05:30 | July 29, 2025 11:15 | 5h 45m | 652 | 1,631 |
| 5 | May 30, 2025 03:30 | May 30, 2025 09:45 | 6h 15m | 408 | 2,550 |
| 6 | October 19, 2025 16:15 | October 19, 2025 19:45 | 3h 30m | 408 | 751 |
| 7 | January 3, 2025 16:15 | January 3, 2025 16:45 | 30m | 133 | 67 |
| 8 | August 16, 2025 15:45 | August 16, 2025 20:00 | 4h 15m | 133 | 204 |
| 9 | May 15, 2025 16:15 | May 15, 2025 19:15 | 3h | 105 | 187 |
| 10 | June 28, 2025 14:15 | June 28, 2025 15:15 | 1h | 75 | 57 |
Outage episodes by size in 2025: 9 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 Clark 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 |
|---|---|---|---|---|---|
| Northern States Power Co | 2024 | 3.1 hrs | 1.06 | 2.0 hrs | 0.81 |
| Taylor Electric Coop - (WI) | 2018 | 80 min | - | 46 min | - |
| City of Marshfield - (WI) | 2024 | 36 min | 0.60 | 20 min | 0.37 |
| Eau Claire Electric Coop | - | - | - | - | - |
| Clark Electric Coop - (WI) | - | - | - | - | - |
| Jackson Electric Coop, Inc - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 15,996 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. Clark County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clark County, WI 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/wisconsin/clark-county