County annual report · FIPS 16065
2018 Madison County, ID Power Outage Report
In 2018, customers in Madison County, ID went without power for an average of 12.9 hours, a total of 115K customer-hours (Idaho average 2.0 hours). That ranks 9th worst of 44 Idaho counties and 428th of 2,798 nationally.
Compared with ID, the US and 2017
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Madison 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 | September 23, 2018 11:00 | September 23, 2018 19:15 | 8h 15m | 13,037 | 13K |
| 2 | December 8, 2018 03:30 | December 8, 2018 10:15 | 6h 45m | 12,911 | 36K |
| 3 | May 23, 2018 13:15 | May 23, 2018 16:15 | 3h | 5,681 | 11K |
| 4 | January 26, 2018 02:15 | January 26, 2018 06:00 | 3h 45m | 4,732 | 13K |
| 5 | November 18, 2018 14:30 | November 19, 2018 01:30 | 11h | 1,808 | 18K |
| 6 | May 14, 2018 13:15 | May 15, 2018 14:15 | 1d 1h | 1,012 | 5,722 |
| 7 | June 18, 2018 10:30 | June 18, 2018 14:15 | 3h 45m | 787 | 2,659 |
| 8 | July 14, 2018 15:00 | July 14, 2018 20:45 | 5h 45m | 787 | 1,110 |
| 9 | June 17, 2018 22:00 | June 18, 2018 09:00 | 11h | 786 | 1,386 |
| 10 | April 6, 2018 20:15 | April 6, 2018 21:45 | 1h 30m | 457 | 521 |
Outage episodes by size in 2018: 27 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 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| Fall River Rural Elec Coop Inc | 2018 | 4.6 hrs | 2.31 | 4.2 hrs | 2.11 |
| 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 91% of Idaho's customers in 2018; 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, 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/idaho/madison-county