Howard County, Maryland Power Outages, 2015 to 2023

Howard County, Maryland had 11 major outages from 2015 to 2023

Lower outage time among US counties

Residents here averaged 0.26 times the US outage time per person and 0.67 times the Maryland rate. It ranks 22 of 24 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

1.2major outages per year

6 of 9years with a major outage

60 hrslongest major outage

Jun, Marhardest months

June and March made up 39% of this county's outage time. The largest outage on record began Mar 2, 2018, reached 21,220 customers, and left at least 200 customers out for 31.2 hours.

Outage time per resident, rated Maryland counties

MostLeast

Outage impact by year

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

200K

400K

600K

800K

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	104,632	100	0
2016	401,452	146	3
2017	84,142	114	0
2018	486,291	147	1
2019	266,950	112	4
2020	98,350	81	1
2021	108,245	92	0
2022	270,210	69	1
2023	143,702	88	1

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
Mar 2, 2018	31.2	21,220	183,936
Dec 23, 2022	60.2	6,274	170,854
Jun 21, 2016	8.2	23,403	154,323
Jun 22, 2016	30.5	8,918	98,106
May 23, 2019	21.8	9,812	51,493

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.