San Joaquin County, California Power Outages, 2018 to 2023

San Joaquin County, California had 10 major outages from 2018 to 2023

Below middle outage time among US counties

Residents here averaged 0.57 times the US outage time per person and 0.64 times the California rate. It ranks 38 of 55 in the state, where 1 has the most. Data confidence: Medium, with 6 years of records.

1.7major outages per year

5 of 6years with a major outage

66 hrslongest major outage

Jan, Aughardest months

January and August made up 63% of this county's outage time. The largest outage on record began Jan 1, 2023, reached 43,541 customers, and left at least 200 customers out for 66.2 hours.

Outage time per resident, rated California counties

MostLeast

Outage impact by year

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

2018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2018	164,844	159	0
2019	758,931	331	2
2020	525,575	316	1
2021	1,824,567	283	3
2022	731,734	289	1
2023	2,878,147	356	3

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
Jan 1, 2023	66.2	43,541	1,265,510
Jan 27, 2021	37.5	56,870	1,197,286
Jan 8, 2023	27.5	40,168	438,477
Jan 8, 2023	8.5	40,830	293,685
Apr 23, 2019	15.0	18,357	144,071

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.

Look up another county

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.