Middlesex County, Massachusetts Power Outages, 2015 to 2023

Middlesex County, Massachusetts had 14 major outages from 2015 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 Massachusetts rate. It ranks 10 of 12 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

1.6major outages per year

8 of 9years with a major outage

100 hrslongest major outage

Mar, Octhardest months

March and October made up 53% of this county's outage time. The largest outage on record began Mar 8, 2018, reached 148,898 customers, and left at least 200 customers out for 92.8 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.

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	1,009,870	497	1
2016	1,593,754	621	1
2017	3,221,885	510	2
2018	6,867,634	576	2
2019	1,293,030	324	2
2020	1,853,768	482	3
2021	916,806	485	0
2022	1,012,709	522	1
2023	3,061,581	465	2

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 8, 2018	92.8	148,898	5,580,955
Oct 29, 2017	100.0	66,566	2,209,476
Dec 18, 2023	66.8	85,579	1,254,996
Oct 17, 2019	63.8	29,508	556,342
Feb 5, 2016	59.5	32,359	541,213

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.