– 0% of Bonner out 0 customers out in Idaho

Power outage history

Bonner County Idaho

17hours

without power for the average customer in a typical year, 2018–2025

5th most of 35 in Idaho 2.6× the national median

Worst outage on record Sep 7, 2020 57% of customers out · 90% back in 2.0 days

Hours without power, average customer per year 17h / yr State average 3.7 h · national median 6.6 h

Major outages a year 6.3 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 5hours Median across major outages, from the peak

Longest single outage 4.3days Sep 7, 2020, over 1% of customers out

Outage hours on storm days 71% Share falling on days with a NOAA storm report here

Worst year 2020 38 hours without power, average customer

Electricity customers 27,216 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Bonner's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2020 was the worst well-recorded year, at 38 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Bonner, hours without power per customer

BonnerUS median countyIdaho average

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began	Storm	Peak out	Share	Lasted	90% restored	Customer-hours
Sep 7, 2020	Windstorm	15,483	57%	4.3 d	2.0 d	415k
Sep 25, 2024	Thunderstorms	18,917	70%	2.3 d	46 h	338k
Dec 19, 2017	Winter storm	11,568	43%	3.2 d	43 h	313k
Mar 13, 2020	Windstorm	17,259	63%	2.1 d	35 h	268k
Jan 13, 2021	Windstorm	18,423	68%	2.6 d	34 h	229k
Nov 15, 2021	Windstorm	25,571	94%	2.8 d	18 h	220k
Apr 18, 2021	Windstorm	27,216	100%	47 h	17 h	192k
Dec 17, 2025	Windstorm	14,387	53%	2.1 d	16 h	151k
Nov 17, 2015	Windstorm	7,084	26%	3.1 d	31 h	122k
Jan 12, 2020	Winter storm	14,113	52%	19 h	9.8 h	91k
Nov 4, 2022	No storm report	13,642	50%	20 h	17 h	83k
Mar 28, 2021	Windstorm	8,438	31%	16 h	12 h	55k
Nov 27, 2019	No storm report	3,679	14%	41 h	39 h	50k
Jul 23, 2019	Thunderstorms	5,022	18%	20 h	16 h	45k
May 22, 2021	No storm report	4,057	15%	11 h	10 h	37k
Sep 18, 2024	No storm report	3,554	13%	10 h	12 h	31k
Dec 6, 2020	No storm report	4,275	16%	12 h	12 h	31k
Jan 9, 2024	Winter storm	4,568	17%	20 h	12 h	30k
May 8, 2024	No storm report	3,511	13%	8.0 h	9.8 h	27k
Dec 29, 2017	Winter storm	4,737	17%	14 h	4.5 h	26k
Jan 13, 2024	Winter storm	4,933	18%	24 h	12 h	26k
Aug 18, 2016	Wildfire	5,670	21%	12 h	8.0 h	25k
Apr 4, 2022	Windstorm	4,033	15%	16 h	14 h	24k
Sep 28, 2019	Winter storm	3,814	14%	24 h	8.0 h	24k
Dec 24, 2022	No storm report	2,926	11%	8.5 h	6.0 h	23k
Dec 2, 2023	Winter storm	2,444	9%	13 h	10 h	23k
May 28, 2016	No storm report	8,357	31%	4.8 h	2.5 h	21k
May 10, 2020	No storm report	11,095	41%	3.2 h	12 min	21k
Sep 28, 2022	No storm report	4,707	17%	6.5 h	4.2 h	21k
Dec 5, 2025	No storm report	5,592	21%	4.5 h	2.0 h	21k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Bonner from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Windstorm 46%
No storm on record 29%
Thunderstorms 11%
Winter storm 10%
Wildfire 3.1%
Flooding 0.7%

Who keeps the lights on

Utilities serving Bonner

As each utility reports to the Energy Information Administration for its whole Idaho territory, not this county alone. Outage minutes include major storm days.

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Avista Corp	Investor Owned	973	208	1.89	11.8	129k
Kootenai Electric Cooperative	Cooperative	369	94	1.35	13.4	31k
Northern Lights, Inc	Cooperative	1,054	417	–	12.2	18k
Inland Power & Light Company	Cooperative	–	–	–	9.4	2.2k
Bonneville Power Administration	Federal	–	–	–	–	–

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Shoshone 20 h
Bonner (this county) 17 h
Lincoln, MT 14 h
Boundary 13 h
Sanders, MT 13 h
Pend Oreille, WA 8.8 h
Kootenai 3.8 h
Spokane, WA 3.6 h

Across Idaho

Where it is darkest

Hours / yr64+

All Idaho counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 27,216 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →