County annual report · FIPS 16065
2021 Madison County, ID Power Outage Report
In 2021, customers in Madison County, ID went without power for an average of 11.5 hours, a total of 102K customer-hours (Idaho average 5.7 hours). That ranks 12th worst of 43 Idaho counties and 698th of 2,974 nationally.
Compared with ID, the US and 2020
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Madison 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 | June 12, 2021 19:30 | June 13, 2021 00:45 | 5h 15m | 13,277 | 19K |
| 2 | May 16, 2021 11:45 | May 16, 2021 12:00 | 15m | 11,807 | 2,952 |
| 3 | October 29, 2021 15:45 | October 30, 2021 00:15 | 8h 30m | 9,972 | 38K |
| 4 | February 3, 2021 11:00 | February 3, 2021 18:15 | 7h 15m | 5,173 | 20K |
| 5 | March 29, 2021 08:00 | March 29, 2021 09:15 | 1h 15m | 2,891 | 2,219 |
| 6 | December 21, 2021 16:30 | December 21, 2021 17:15 | 45m | 1,905 | 1,429 |
| 7 | August 3, 2021 12:45 | August 3, 2021 18:30 | 5h 45m | 966 | 2,178 |
| 8 | March 29, 2021 19:15 | March 29, 2021 20:30 | 1h 15m | 792 | 990 |
| 9 | April 17, 2021 23:00 | April 18, 2021 00:45 | 1h 45m | 792 | 596 |
| 10 | October 22, 2021 14:45 | October 23, 2021 01:00 | 10h 15m | 477 | 1,508 |
Outage episodes by size in 2021: 28 reached 100+ customers, 6 reached 1,000+ customers, 2 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 Madison 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2021 | 4.3 hrs | 1.86 | 2.0 hrs | 1.19 |
| Fall River Rural Elec Coop Inc | 2021 | 71 min | 0.61 | 57 min | 0.50 |
| Bonneville Power Administration | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 90% of Idaho's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,877 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. Madison County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Madison County, ID 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/idaho/madison-county