Suffolk County, Massachusetts Power Outages, 2015 to 2023

Suffolk County, Massachusetts had 5 major outages from 2015 to 2023

Lower outage time among US counties

Residents here averaged 0.29 times the US outage time per person and 0.32 times the Massachusetts rate. It ranks 12 of 12 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.6major outages per year

5 of 9years with a major outage

58 hrslongest major outage

Oct, Marhardest months

October and March made up 24% of this county's outage time. The largest outage on record began Mar 2, 2018, reached 11,082 customers, and left at least 200 customers out for 58.2 hours.

Outage time per resident, rated Massachusetts counties

MostLeast

Outage impact by year

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

0.25M

0.5M

0.75M

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	550,656	254	0
2016	583,033	372	1
2017	480,793	327	0
2018	853,778	404	1
2019	450,963	214	1
2020	536,095	347	0
2021	475,460	316	0
2022	470,358	252	1
2023	583,232	248	1

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
Mar 2, 2018	58.2	11,082	161,189
Dec 18, 2023	52.5	12,487	144,504
Oct 17, 2019	48.2	9,193	109,354
Jul 24, 2022	24.0	22,288	70,982
Mar 8, 2018	36.2	4,111	63,429

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.