Power Out Map
– 0% of Butte out 0 customers out in Idaho

Power outage history

Butte County Idaho

9.1hours

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

10th most of 35 in Idaho 1.4× the national median

Worst outage on record Jul 2, 2020 37% of customers out · 90% back in 22 hours
Hours without power, average customer per year 9.1h / yr State average 3.7 h · national median 6.6 h
Major outages a year 5.6 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 4hours Median across major outages, from the peak
Longest single outage 24hours Feb 5, 2025, over 1% of customers out
Outage hours on storm days 51% Share falling on days with a NOAA storm report here
Worst year 2025 24 hours without power, average customer
Electricity customers 1,044 EAGLE-I 2024 count · 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 Butte'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

2025 was the worst well-recorded year, at 24 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Butte, hours without power per customer

ButteUS median countyIdaho average
0 10 20 30 ’17 1.3 ’18 1.2 ’19 15 ’20 4.9 ’21 15 ’22 5.8 ’23 5.8 ’24 24 ’25 US 6.6 ID 3.7

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
Jul 2, 2020 Wildfire 387 37% 21 h 22 h 8.1k
Feb 5, 2025 Windstorm 397 38% 24 h 23 h 6.7k
Dec 17, 2025 Windstorm 401 38% 21 h 13 h 5.7k
Nov 7, 2022 Winter storm 392 38% 15 h 15 h 4.8k
Jul 18, 2023 No storm report 1,043 100% 6.8 h 4.5 h 3.2k
Mar 16, 2025 Winter storm 397 38% 7.8 h 10 h 3.1k
Sep 30, 2021 No storm report 388 37% 6.0 h 6.0 h 2.3k
Mar 8, 2022 No storm report 313 30% 6.5 h 12 h 2.0k
Sep 20, 2020 No storm report 1,044 100% 4.0 h 4.0 h 2.0k
May 6, 2022 No storm report 314 30% 6.2 h 17 h 2.0k
Mar 29, 2022 No storm report 313 30% 6.2 h 6.2 h 2.0k
Sep 12, 2017 No storm report 648 62% 3.0 h 12 min 1.9k

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.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +8h 90% by +8h

When it happens

The outage clock

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

00061218 Jan inside

What was happening

Weather behind the outages

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

  • No storm on record 49%
  • Windstorm 21%
  • Winter storm 13%
  • Wildfire 12%
  • Thunderstorms 4.6%

Who keeps the lights on

Utilities serving Butte

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
PacifiCorp Investor Owned 146 146 1.16 13.5 76k
Lost River Electric Coop Inc ID – – – – 30k
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

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 1,044 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 →