Montgomery County power outages

Iowa outage history from 2015 to 2023, with the largest outages and a backup battery estimate.

Montgomery County, Iowa had 1 major outage from 2015 to 2023

Lower outage time among US counties

Residents here averaged 0.21 times the US outage time per person and 0.25 times the Iowa rate. It ranks 70 of 97 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.1major outages per year
1 of 9years with a major outage
10 hrslongest major outage
Jul, Junhardest months

July and June made up 38% of this county's outage time. The largest outage on record began Jul 6, 2016, reached 2,469 customers, and left at least 200 customers out for 3.5 hours.

Outage time per resident, rated Iowa counties
MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

0
2.5K
5K
7.5K
10K
2015'152016'162017'172018'182019'192020'202021'212022'222023'23
Show yearly numbers
YearCustomer-hoursReported outagesMajor outages
20151,38830
20167,55780
20171,96140
20186,94490
20192,316100
20206,07151
20218,88480
20225,58370
20236,88890

When outages hit

Share of this county's customer-hours by month.

0%
10%
20%
30%
40%
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start dateHoursPeak customersCustomer-hours
Jul 6, 20163.52,4694,865
Oct 12, 202010.27784,470
Dec 1, 20211.04,3464,241
Dec 15, 20217.87153,503
Sep 2, 20182.51,3882,760

Hours measure how long at least 200 customers in the county were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

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Counties ranked nearby

How to read this

  • A major outage lasted at least 8 hours and reached customers equal to at least 1% of county residents.
  • Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
  • Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.