Galveston County power outages

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

Galveston County, Texas had 36 major outages from 2015 to 2023

Higher outage time among US counties

Residents here averaged 1.65 times the US outage time per person and 1.82 times the Texas rate. It ranks 56 of 189 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

4.0major outages per year
6 of 9years with a major outage
724 hrslongest major outage
Feb, Sephardest months

February and September made up 64% of this county's outage time. The largest outage on record began Feb 15, 2021, reached 164,606 customers, and left at least 200 customers out for 83.2 hours.

Outage time per resident, rated Texas counties
MostLeast

Outage impact by year

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

0
2.5M
5M
7.5M
10M
2015'152016'162017'172018'182019'192020'202021'212022'222023'23
Show yearly numbers
YearCustomer-hoursReported outagesMajor outages
2015132,7951100
201615,90880
2017248,859391
2018296,1381410
2019891,4901763
2020448,5641756
20218,704,75052210
20221,093,42663810
20231,502,2824696

When outages hit

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

0%
20%
40%
60%
80%
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start dateHoursPeak customersCustomer-hours
Feb 15, 202183.2164,6066,486,881
Sep 13, 2021121.057,1421,245,544
Jun 22, 202373.028,418426,096
Jun 7, 2019723.88,234412,800
Sep 19, 201954.86,593246,862

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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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.