County annual report · FIPS 16001
2015 Ada County, ID Power Outage Report
In 2015, customers in Ada County, ID went without power for an average of 0.2 hours, a total of 55K customer-hours (Idaho average 2.6 hours). That ranks 23rd worst of 31 Idaho counties and 2245th of 2,484 nationally.
Compared with ID, the US
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Ada County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 25, 2015 22:30 | August 25, 2015 23:45 | 1h 15m | 5,318 | 5,800 |
| 2 | August 28, 2015 16:45 | August 29, 2015 00:45 | 8h | 3,657 | 3,908 |
| 3 | August 11, 2015 22:30 | August 12, 2015 07:30 | 9h | 3,272 | 9,119 |
| 4 | September 17, 2015 19:30 | September 18, 2015 00:45 | 5h 15m | 3,090 | 2,563 |
| 5 | September 17, 2015 16:00 | September 17, 2015 17:00 | 1h | 2,268 | 2,268 |
| 6 | September 16, 2015 06:00 | September 16, 2015 06:45 | 45m | 2,190 | 1,643 |
| 7 | August 18, 2015 18:30 | August 18, 2015 22:45 | 4h 15m | 1,925 | 1,158 |
| 8 | September 6, 2015 01:45 | September 6, 2015 05:00 | 3h 15m | 1,782 | 1,864 |
| 9 | September 2, 2015 13:30 | September 2, 2015 14:00 | 30m | 1,778 | 889 |
| 10 | September 16, 2015 19:00 | September 16, 2015 19:15 | 15m | 1,715 | 429 |
Outage episodes by size in 2015: 46 reached 100+ customers, 16 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 Ada County reported on EIA Form 861 for 2015, 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 |
|---|---|---|---|---|---|
| Idaho Power Co | 2015 | 4.8 hrs | 1.76 | 4.4 hrs | 1.64 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Idaho's customers in 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 256,537 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. Ada County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ada County, ID annual power outage report, 2015, 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/2015/idaho/ada-county