County annual report · FIPS 55019
2020 Clark County, WI Power Outage Report
In 2020, customers in Clark County, WI went without power for an average of 1.0 hours, a total of 16K customer-hours (Wisconsin average 1.8 hours). That ranks 53rd worst of 72 Wisconsin counties and 2659th 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 Clark 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 | May 26, 2020 15:00 | May 27, 2020 06:30 | 15h 30m | 1,153 | 5,311 |
| 2 | December 22, 2020 11:30 | December 22, 2020 15:00 | 3h 30m | 561 | 987 |
| 3 | June 11, 2020 18:15 | June 11, 2020 22:45 | 4h 30m | 559 | 338 |
| 4 | August 14, 2020 22:00 | August 14, 2020 23:30 | 1h 30m | 553 | 830 |
| 5 | October 20, 2020 21:00 | October 21, 2020 07:30 | 10h 30m | 513 | 1,572 |
| 6 | May 20, 2020 14:00 | May 20, 2020 18:30 | 4h 30m | 506 | 391 |
| 7 | June 9, 2020 18:00 | June 9, 2020 18:30 | 30m | 499 | 250 |
| 8 | June 29, 2020 13:30 | June 29, 2020 17:45 | 4h 15m | 397 | 319 |
| 9 | April 20, 2020 22:30 | April 21, 2020 06:45 | 8h 15m | 363 | 1,149 |
| 10 | August 13, 2020 17:15 | August 13, 2020 19:30 | 2h 15m | 346 | 90 |
Outage episodes by size in 2020: 16 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 Clark 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 |
|---|---|---|---|---|---|
| Northern States Power Co | 2020 | 3.9 hrs | 1.63 | 2.8 hrs | 1.52 |
| Taylor Electric Coop - (WI) | 2018 | 80 min | - | 46 min | - |
| City of Marshfield - (WI) | 2020 | 38 min | 0.56 | 13 min | 0.22 |
| 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 84% of Wisconsin's customers in 2020; 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, 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/clark-county