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

Power outage history

Elmore County Idaho

3.2hours

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

26th most of 35 in Idaho 51% below the national median

Worst outage on record Jun 4, 2017 52% of customers out · 90% back in 9.8 hours
Hours without power, average customer per year 3.2h / yr State average 3.7 h · national median 6.6 h
Major outages a year 3.1 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 1hours Median across major outages, from the peak
Longest single outage 27hours Dec 17, 2025, over 1% of customers out
Outage hours on storm days 20% Share falling on days with a NOAA storm report here
Worst year 2022 4.5 hours without power, average customer
Electricity customers 13,404 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 Elmore'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

2022 was the worst well-recorded year, at 4.5 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Elmore, hours without power per customer

ElmoreUS median countyIdaho average
0 2 4 6 8 10 ’15 ’16 7.6 ’17 2.5 ’18 3.2 ’19 2.4 ’20 3.2 ’21 4.5 ’22 3.4 ’23 2.6 ’24 3.9 ’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
Jun 4, 2017 Thunderstorms 6,947 52% 20 h 9.8 h 39k
Dec 17, 2025 Windstorm 1,558 12% 27 h 25 h 21k
Aug 11, 2015 Wildfire 3,988 30% 8.8 h 7.2 h 16k
Mar 29, 2021 Windstorm 4,838 36% 7.8 h 2.2 h 13k
Jul 22, 2019 No storm report 5,002 37% 2.8 h 2.0 h 10k
Nov 5, 2023 No storm report 7,869 59% 1.2 h 30 min 6.6k
Jun 6, 2017 No storm report 1,702 13% 3.8 h 3.2 h 6.4k
Jan 16, 2020 No storm report 4,687 35% 2.0 h 1.0 h 6.0k
Dec 28, 2024 No storm report 884 7% 13 h 9.0 h 5.8k
Dec 12, 2022 Winter storm 4,266 32% 15 h 30 min 5.7k
Jul 26, 2023 No storm report 2,137 16% 3.2 h 2.8 h 5.5k
Oct 20, 2017 No storm report 1,335 10% 11 h 11 h 5.3k

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 +2h 90% by +6h

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 Elmore from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 80%
  • Windstorm 12%
  • Thunderstorms 3.9%
  • Winter storm 3.3%

Who keeps the lights on

Utilities serving Elmore

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
Idaho Power Co Investor Owned 171 141 1.03 11.8 540k
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 13,404 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 →