Grundy County, Iowa Power Outages, 2015 to 2023

Grundy County, Iowa had 4 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.73 times the US outage time per person and 0.86 times the Iowa rate. It ranks 24 of 97 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.4major outages per year

3 of 9years with a major outage

107 hrslongest major outage

Aug, Mayhardest months

August and May made up 73% of this county's outage time. The largest outage on record began Aug 11, 2020, reached 1,304 customers, and left at least 200 customers out for 107.0 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.

50K

100K

150K

200K

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	1,778	4	0
2016	14,651	18	0
2017	18,054	14	1
2018	6,480	8	0
2019	3,326	6	0
2020	126,279	10	2
2021	14,525	12	1
2022	6,940	4	0
2023	7,957	7	0

When outages hit

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

20%

40%

60%

80%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Aug 11, 2020	107.0	1,304	89,100
Aug 10, 2020	15.2	2,341	20,084
May 17, 2017	19.5	779	11,037
Aug 10, 2020	4.8	2,341	10,368
Mar 16, 2021	17.2	823	4,866

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.