PowerOutageHistory
Reliability Grade
A
Top tier
2017-2025
Idaho

Franklin CountyPower Outage History

20172025 · Idaho
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What this grade means

Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.

Takeaway
Low outage risk
Reliability Rank
Fuller bar = more reliable
Nationwide82nd pct
In Idaho#10 of 44
See full Idaho rankings →
Total events
236
Recorded 2017–2025
Avg duration
2.4 hrs
Per outage event
Longest outage
21 hrs
Single worst event on record
Customers served
11,921
Utility customers in county

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Aug 10, 20241 hrs6,717 (56%)Unnamed event
Aug 28, 2025<1 hr6,270 (53%)Unnamed event
Dec 1, 20202 hrs5,329 (45%)Unnamed event
Nov 8, 202013 hrs5,323 (45%)Unnamed event
Sep 22, 20255 hrs3,962 (33%)Unnamed event

Was There an Outage on a Specific Date?

Pick a date to see whether a power outage was recorded for Franklin County, Idaho that day.

Over the 9 years from 2017 to 2025, Franklin County recorded 236 distinct power outage events, averaging 2.4 hours per event.

The single worst outage on record in Franklin County started August 10, 2024, lasting 1 hours and leaving up to 6,717 customers without power (56% of the county) at its peak.

August has historically been the worst month for outages in Franklin County, with 51 events recorded during that month across the dataset.

Based on this history, Franklin County earns a Reliability Grade of A, placing it in the 82nd percentile nationally for grid reliability (higher percentile = more reliable).

Similar counties in Idaho

Counties with the closest reliability grade and national percentile to Franklin County.

CountyGradeNational percentile
Twin Falls CountyA82nd
Bannock CountyA81st
Payette CountyA85th
Bonneville CountyA85th
Teton CountyB78th

Most reliable counties nationally

The top 3 counties nationally by reliability grade and percentile.

CountyStateGradeNational percentile
Clay CountySouth DakotaA100th
Clearwater CountyMinnesotaA99th
Limestone CountyAlabamaA99th

Least reliable counties nationally

The bottom 3 counties nationally by reliability grade and percentile.

FAQ

How often does power go out in Franklin County?

Between 2017 and 2025, Franklin County recorded 236 outage events, averaging 2.4 hours each.

What is Franklin County's reliability grade?

Franklin County has a Reliability Grade of A, in the 82nd national percentile.

What was the worst power outage in Franklin County?

The worst outage on record started August 10, 2024, lasting 1 hours and affecting up to 6,717 customers.

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Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2025. See methodology.