Hillsborough County, New Hampshire Power Outages, 2015 to 2023

Hillsborough County, New Hampshire had 26 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.80 times the US outage time per person and 0.64 times the New Hampshire rate. It ranks 10 of 10 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

2.9major outages per year

9 of 9years with a major outage

95 hrslongest major outage

Mar, Octhardest months

March and October made up 48% of this county's outage time. The largest outage on record began Oct 30, 2017, reached 58,016 customers, and left at least 200 customers out for 95.0 hours.

Outage time per resident, rated New Hampshire counties

MostLeast

Outage impact by year

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

0.5M

1.5M

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	236,382	171	1
2016	478,823	188	3
2017	1,795,506	181	4
2018	849,410	143	4
2019	243,676	67	3
2020	870,478	161	4
2021	349,558	154	2
2022	877,513	131	3
2023	1,914,139	136	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
Oct 30, 2017	95.0	58,016	1,483,580
Mar 14, 2023	86.0	29,343	1,127,226
Jan 23, 2023	63.0	22,819	608,769
Dec 23, 2022	62.0	25,082	503,480
Mar 8, 2018	79.0	9,491	277,632

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.