– 0% of Hancock out 0 customers out in Maine

Power outage history

Hancock County Maine

41hours

without power for the average customer in a typical year, 2018–2025

3rd most of 16 in Maine 6.2× the national median

Worst outage on record Dec 19, 2023 100% of customers out · 90% back in 3.3 days

Hours without power, average customer per year 41h / yr State average 21 h · national median 6.6 h

Major outages a year 9.8 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 4hours Median across major outages, from the peak

Longest single outage 6.2days Dec 18, 2023, over 1% of customers out

Outage hours on storm days 81% Share falling on days with a NOAA storm report here

Worst year 2023 3.3 days without power, average customer

Electricity customers 31,079 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Hancock's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2023 was the worst well-recorded year, at 3.3 days for the average customer. Hatched years have a thin record and are left out of the averages.

Hancock, hours without power per customer

HancockUS median countyMaine average

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began	Storm	Peak out	Share	Lasted	90% restored	Customer-hours
Dec 18, 2023	Windstorm	31,079	100%	6.2 d	3.3 d	1.5M
Dec 23, 2022	Windstorm	26,662	86%	6.0 d	3.3 d	1.2M
Oct 30, 2017	Windstorm	31,079	100%	5.8 d	3.3 d	1.2M
Apr 9, 2020	Winter storm	21,854	70%	6.0 d	2.3 d	903k
Oct 17, 2019	Windstorm	21,916	71%	2.6 d	45 h	518k
Jan 10, 2016	Windstorm	22,804	73%	2.8 d	42 h	463k
Dec 11, 2024	Windstorm	22,539	73%	2.1 d	26 h	429k
Dec 19, 2025	Windstorm	15,306	49%	2.9 d	42 h	389k
Oct 31, 2019	Windstorm	16,627	54%	3.6 d	42 h	346k
Mar 23, 2024	Winter storm	18,230	59%	2.6 d	33 h	335k
Nov 3, 2018	No storm report	15,786	51%	2.1 d	27 h	324k
Sep 16, 2023	Hurricane Lee	16,197	52%	2.5 d	30 h	275k
Apr 4, 2024	Winter storm	15,530	50%	2.5 d	26 h	249k
Jan 10, 2024	Winter storm	12,148	39%	2.6 d	29 h	216k
Oct 7, 2023	Windstorm	15,425	50%	35 h	11 h	202k
Nov 30, 2020	Windstorm	8,072	26%	48 h	33 h	144k
May 1, 2023	Windstorm	11,951	38%	34 h	11 h	115k
Jan 24, 2019	Windstorm	7,136	23%	30 h	19 h	112k
Nov 30, 2022	Windstorm	6,804	22%	36 h	19 h	86k
Oct 31, 2021	No storm report	13,055	42%	26 h	10 h	74k
Mar 14, 2018	Winter storm	5,463	18%	35 h	27 h	73k
Mar 14, 2017	Winter storm	4,248	14%	43 h	9.0 h	71k
Sep 30, 2015	Flooding	11,197	36%	33 h	6.0 h	71k
Nov 27, 2023	Windstorm	10,262	33%	29 h	8.8 h	69k
Sep 30, 2020	Windstorm	5,641	18%	32 h	25 h	59k
Apr 7, 2016	Windstorm	4,402	14%	28 h	11 h	56k
Dec 5, 2020	No storm report	3,214	10%	26 h	12 h	55k
Aug 13, 2019	No storm report	9,317	30%	6.0 h	3.0 h	54k
Dec 6, 2021	No storm report	6,729	22%	15 h	7.2 h	52k
Oct 12, 2024	Windstorm	9,701	31%	13 h	5.8 h	50k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Hancock from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Windstorm 57%
Winter storm 20%
No storm on record 19%
Tropical storm 3.1%
Thunderstorms 0.6%

Who keeps the lights on

Utilities serving Hancock

As each utility reports to the Energy Information Administration for its whole Maine territory, not this county alone. Outage minutes include major storm days.

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Central Maine Power Co	Investor Owned	318	177	2.11	27.4	584k
Versant Power	Investor Owned	500	223	2.38	30.1	138k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Hancock (this county) 41 h
Waldo 27 h
Knox 27 h
Penobscot 21 h
Washington 19 h

Across Maine

Where it is darkest

Hours / yr64+

All Maine counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 31,079 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →