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Idaho power outages

141.162 minutes

Minutes without power for the average Idaho Power Co customer, excluding major event days as IEEE 1366 defines them, 2025

−13.9% since 2024 (164.01 minutes); −12.0% since 2020 (160.45 minutes); −14.7% since 2015 (165.519 minutes)

Source: U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861 (Reliability). Data period 2025. Published .

SAIDI (System Average Interruption Duration Index) without major event days: minutes of power interruption the average customer of an Idaho utility experienced in the year, reported under IEEE Standard 1366.

Change and comparison

From 2013 (145 minutes) to 2025 (141.162 minutes), the change was −2.6%.

The series high is 210 minutes in 2017 and the low is 119.71 minutes in 2023.

The largest category is Salmon River Electric Coop Inc at 356.051 minutes; next is Avista Corp at 208 minutes.

Historical data

Idaho power outages, 2013 to 2025Idaho power outages, 2013 to 2025. Idaho Power Co: 145 in 2013, 141.162 in 2025.0100200300201520202025Idaho PowerCoMinutesIdaho power outages, 2013 to 2025Idaho power outages, 2013 to 2025. Idaho Power Co: 145 in 2013, 141.162 in 2025.0100200300201520202025Idaho Power CoMinutesIdaho power outages, 2013 to 2025Idaho power outages, 2013 to 2025. Idaho Power Co: 145 in 2013, 141.162 in 2025.0100200300201520202025Idaho Power CoMinutes

Source: U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861 (Reliability). Published .

Data table (13 rows)
PeriodIdaho Power Co (minutes)
2013145.000
2014126.610
2015165.519
2016159.440
2017210.000
2018121.540
2019120.000
2020160.450
2021119.760
2022151.680
2023119.710
2024164.010
2025141.162

Outage minutes by utility

Minutes

  1. Salmon River Electric Coop Inc356.051
  2. Avista Corp208.000
  3. PacifiCorp145.950
  4. United Electric Co-op, Inc - (ID)118.200
  5. Kootenai Electric Cooperative93.580
  6. City of Idaho Falls - (ID)16.760
  7. Fall River Rural Elec Coop Inc7.049
  8. Missoula Electric Coop, Inc0.772

Source: U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861 (Reliability). Data period 2025. Published .

Data table (8 rows)
Utility2025 (minutes)
Salmon River Electric Coop Inc356.051
Avista Corp208.000
PacifiCorp145.950
United Electric Co-op, Inc - (ID)118.200
Kootenai Electric Cooperative93.580
City of Idaho Falls - (ID)16.760
Fall River Rural Elec Coop Inc7.049
Missoula Electric Coop, Inc0.772

Interruptions per customer

0.963 in 2025. SAIFI (System Average Interruption Frequency Index) without major event days: interruptions per customer per year for an Idaho utility, reported under IEEE Standard 1366.

Interruptions per customer, 2013 to 2025Interruptions per customer, 2013 to 2025. Power interruptions per customer: 1.27 in 2013, 0.963 in 2025.0.00.51.01.5201520202025RatioInterruptions per customer, 2013 to 2025Interruptions per customer, 2013 to 2025. Power interruptions per customer: 1.27 in 2013, 0.963 in 2025.0.00.51.01.5201520202025Powerinterruptionsper customerRatioInterruptions per customer, 2013 to 2025Interruptions per customer, 2013 to 2025. Power interruptions per customer: 1.27 in 2013, 0.963 in 2025.0.00.51.01.5201520202025Powerinterruptionsper customerRatio

Source: U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861 (Reliability). Published .

Data table (13 rows)
PeriodPower interruptions per customer (ratio)
20131.270
20141.080
20151.357
20161.180
20171.480
20181.060
20191.150
20201.090
20211.090
20221.170
20231.000
20241.210
20250.963

Idaho utility reliability, latest year

One row per Idaho utility per year it filed reliability figures on Form EIA-861.

Data table (10 rows)
UtilityCustomersMinutes without power per customerInterruptions per customerMinutes with major eventsInterruptions with major events
Fall River Rural Elec Coop Inc18,8197.0490.0617.3040.063
City of Idaho Falls - (ID)33,87516.760.250.610.47
Idaho Power Co636,130141.1620.963170.9631.029
Kootenai Electric Cooperative35,02993.580.719368.91.35
Missoula Electric Coop, Inc700.7720.1387.790.15
Northern Lights, Inc19,250417.45n/a1,053.88n/a
PacifiCorp91,462145.951.16145.951.16
Salmon River Electric Coop Inc3,114356.0513.824356.0513.824
United Electric Co-op, Inc - (ID)7,692118.21.01225.721.52
Avista Corp148,2012081.29731.89

Source: U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861 (Reliability). Published .

Source

Organization
U.S. Energy Information Administration
Dataset
Annual Electric Power Industry Report, Form EIA-861 (Reliability)
Geography
Idaho utilities only; the source file covers every state.
Time coverage
2013-2025
Update frequency
Annual
Published
Original file
https://www.eia.gov/electricity/data/eia861/zip/f8612025.zip
Methodology
https://www.eia.gov/electricity/data/eia861/
License
Public domain. U.S. federal government work.
Our copy
Annual Electric Power Industry Report, Form EIA-861 (Reliability)

Caveats

  • SAIDI and SAIFI are as reported by each utility to EIA; this site does not recompute them.
  • IEEE Standard 1366 lets a utility exclude 'major event days,' meaning days with unusually severe storms or other extreme conditions, from its headline SAIDI and SAIFI figures; the records table also gives the figures with those days included.
  • A few small Idaho utilities report under an internally defined 'Other' standard rather than IEEE 1366. Their figures are kept in the records table but excluded from the two measures below, since mixing measurement rules under one figure would compare different definitions of an interruption. Northern Lights, Inc reports under the Other standard in every year it has filed; Kootenai Electric Cooperative reported under the Other standard from 2013 through 2017 and under IEEE from 2018 on.
  • Not every utility files every year; a utility absent from a year's records filed no reliability figures that year (commonly a Short Form filing).
  • Utility names are made consistent across years wherever this dataset groups figures by utility (Kootenai Electric Cooperative is printed 'Kootenai Electric Coop Inc' in the 2017 file); the records table keeps the name EIA printed that year.
  • Reliability reporting on Form EIA-861 began with the 2013 data year.

Cite

Cite this page as Understand Idaho, “Idaho power outages”, https://understandidaho.com/energy/reliability/, retrieved on the date you read it, and the publisher named above for the figures themselves. The dataset behind it is described in the data catalog.

This page was last updated .