County annual report · FIPS 55019
2018 Clark County, WI Power Outage Report
In 2018, customers in Clark County, WI went without power for an average of 1.4 hours, a total of 22K customer-hours (Wisconsin average 1.7 hours). That ranks 42nd worst of 71 Wisconsin counties and 2154th 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 Clark 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 | July 13, 2018 07:45 | July 13, 2018 13:00 | 5h 15m | 1,757 | 5,194 |
| 2 | July 1, 2018 20:15 | July 2, 2018 00:00 | 3h 45m | 1,694 | 1,712 |
| 3 | June 3, 2018 03:00 | June 3, 2018 03:45 | 45m | 1,412 | 1,059 |
| 4 | May 28, 2018 10:15 | May 28, 2018 14:15 | 4h | 1,153 | 1,618 |
| 5 | July 28, 2018 02:45 | July 28, 2018 03:30 | 45m | 1,146 | 287 |
| 6 | June 18, 2018 00:15 | June 18, 2018 16:15 | 16h | 622 | 4,106 |
| 7 | July 20, 2018 06:30 | July 20, 2018 06:45 | 15m | 558 | 140 |
| 8 | September 17, 2018 23:45 | September 18, 2018 01:15 | 1h 30m | 557 | 697 |
| 9 | July 29, 2018 19:30 | July 29, 2018 20:30 | 1h | 447 | 115 |
| 10 | July 9, 2018 16:30 | July 9, 2018 19:00 | 2h 30m | 387 | 298 |
Outage episodes by size in 2018: 18 reached 100+ customers, 5 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 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 |
|---|---|---|---|---|---|
| Northern States Power Co | 2018 | 2.9 hrs | 0.94 | 1.8 hrs | 0.69 |
| Taylor Electric Coop - (WI) | 2018 | 80 min | - | 46 min | - |
| City of Marshfield - (WI) | 2018 | 11 min | 0.28 | 8 min | 0.24 |
| 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 83% of Wisconsin's customers in 2018; 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, 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/clark-county