Jefferson County, Iowa Power Outages, 2015 to 2023

Jefferson County, Iowa had 2 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.50 times the US outage time per person and 0.59 times the Iowa rate. It ranks 39 of 97 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.2major outages per year

2 of 9years with a major outage

14 hrslongest major outage

Mar, Junhardest months

March and June made up 39% of this county's outage time. The largest outage on record began Mar 31, 2023, reached 1,495 customers, and left at least 200 customers out for 14.0 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.

10K

20K

30K

40K

2015'152016'162017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	15,676	7	1
2016	21,869	10	0
2017	12,720	7	0
2018	32,742	16	0
2019	7,546	6	0
2020	37,065	17	0
2021	10,832	9	0
2022	5,337	7	0
2023	30,786	18	1

When outages hit

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

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Mar 31, 2023	14.0	1,495	19,222
Jan 23, 2016	4.8	4,479	15,614
Jul 15, 2020	3.0	4,622	13,722
Jun 21, 2015	9.0	3,906	12,548
Mar 24, 2018	4.8	2,039	9,275

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.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

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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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.