San Diego County, California Power Outages, 2015 to 2023

San Diego County, California had 3 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.45 times the US outage time per person and 0.50 times the California rate. It ranks 44 of 55 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.3major outages per year

3 of 9years with a major outage

86 hrslongest major outage

Dec, Octhardest months

December and October made up 28% of this county's outage time. The largest outage on record began Dec 2, 2020, reached 74,451 customers, and left at least 200 customers out for 85.5 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.

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	2,228,780	876	0
2016	2,766,487	782	1
2017	3,523,657	677	1
2018	3,638,827	755	0
2019	3,963,308	776	0
2020	6,049,800	728	1
2021	3,674,581	817	0
2022	3,355,441	782	0
2023	3,347,426	701	0

When outages hit

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

10%

15%

20%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Dec 2, 2020	85.5	74,451	2,272,300
Dec 7, 2017	118.2	27,587	1,066,189
Oct 30, 2019	46.5	27,587	759,836
Sep 5, 2020	123.2	27,150	627,692
Nov 13, 2018	66.2	28,815	619,402

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.