County annual report · FIPS 55035
2021 Eau Claire County, WI Power Outage Report
In 2021, customers in Eau Claire County, WI went without power for an average of 1.8 hours, a total of 99K customer-hours (Wisconsin average 4.7 hours). That ranks 49th worst of 72 Wisconsin counties and 2330th of 2,974 nationally.
Compared with WI, the US and 2020
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Eau Claire County, 2021
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 31, 2021 22:45 | August 1, 2021 01:00 | 2h 15m | 8,654 | 4,770 |
| 2 | December 16, 2021 03:15 | December 18, 2021 03:00 | 1d 23h | 4,802 | 35K |
| 3 | April 5, 2021 13:45 | April 5, 2021 15:45 | 2h | 4,219 | 3,166 |
| 4 | June 28, 2021 08:15 | June 28, 2021 17:45 | 9h 30m | 4,219 | 2,865 |
| 5 | June 4, 2021 00:00 | June 4, 2021 04:45 | 4h 45m | 3,474 | 4,644 |
| 6 | July 29, 2021 03:30 | July 30, 2021 01:00 | 21h 30m | 2,716 | 8,466 |
| 7 | August 24, 2021 12:00 | August 25, 2021 02:15 | 14h 15m | 2,339 | 11K |
| 8 | May 30, 2021 11:00 | May 30, 2021 13:15 | 2h 15m | 1,563 | 3,273 |
| 9 | December 26, 2021 15:45 | December 26, 2021 21:30 | 5h 45m | 1,034 | 3,894 |
| 10 | June 12, 2021 23:45 | June 13, 2021 01:15 | 1h 30m | 1,011 | 1,290 |
Outage episodes by size in 2021: 30 reached 100+ customers, 10 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 Eau Claire County reported on EIA Form 861 for 2021, 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 | 2021 | 6.7 hrs | 1.60 | 2.2 hrs | 1.10 |
| Riverland Energy Cooperative | 2021 | 5.7 hrs | 1.31 | 72 min | 0.77 |
| Eau Claire Electric Coop | - | - | - | - | - |
| 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 85% of Wisconsin's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 55,392 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. Eau Claire County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Eau Claire County, WI annual power outage report, 2021, 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/2021/wisconsin/eau-claire-county