Williamson County, Tennessee Power Outages, 2015 to 2023

Williamson County, Tennessee had 7 major outages from 2015 to 2023

Lower outage time among US counties

Residents here averaged 0.17 times the US outage time per person and 0.19 times the Tennessee rate. It ranks 61 of 78 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.8major outages per year

6 of 9years with a major outage

34 hrslongest major outage

May, Julhardest months

May and July made up 38% of this county's outage time. The largest outage on record began May 4, 2020, reached 6,445 customers, and left at least 200 customers out for 33.8 hours.

Outage time per resident, rated Tennessee counties

MostLeast

Outage impact by year

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

100K

200K

300K

400K

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	36,201	37	0
2016	75,763	64	1
2017	41,949	43	0
2018	68,993	77	0
2019	130,158	56	1
2020	205,048	73	1
2021	100,510	72	1
2022	227,298	101	1
2023	147,632	92	2

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
May 4, 2020	33.8	6,445	89,612
Jul 1, 2023	10.0	11,340	41,001
Mar 3, 2023	24.2	8,667	39,162
Apr 14, 2022	15.2	10,062	39,010
Jun 20, 2019	18.0	5,282	37,528

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.