Barnstable County, MA Power Outages
Only some utilities serving Barnstable County, Massachusetts share live outage data (Massachusetts Electric Co), and none of them report outages here right now. NSTAR Electric Company does not share live data, so check its outage map for real-time status.
Barnstable County on the Massachusetts outage map
- Normal
- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Barnstable County power outage history
Every significant outage recorded in Barnstable County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 317 significant power outages in Barnstable County, meaning events that left at least 1% of customers in the dark. The largest (Oct 27–31, 2021) came when high winds left 273,634 customers (100% of the county) without power.
From 2018 to 2025, the average customer here lost about 21 hr 12 min of power per year, more than the Massachusetts average of 5 hr 11 min. That ranks 2nd of 14 Massachusetts counties for outage time, where 1st has the most.
March is the riskiest month: it accounted for 40% of all customer outage time from 2018 to 2025. On 72 days in that period, at least 5% of customers were out at the same time. Outage time in Barnstable County has fallen recently: about 9 hr 3 min per customer per year in 2022–2025, versus 33 hr 20 min in 2018–2021.
The most recent significant outage on record (Dec 24, 2025) affected 1,617 customers (1.4%).
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Oct 27–31, 2021 | 273,634(100%) | 5 | High winds |
| 2 | Mar 13–16, 2018 | 128,268(100%) | 4 | Winter storm |
| 3 | Mar 2–8, 2018 | 103,060(87%) | 7 | High winds |
| 4 | Jan 27 – Feb 4, 2022 | 85,305(72%) | 9 | Winter storm |
| 5 | Feb 9–13, 2017 | 50,097(42.3%) | 5 | Winter storm |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Barnstable County?
Electric companies with service territory in Barnstable County (EIA-861, 2025)
| Utility | Type | Customers (MA) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Eversource (Massachusetts) | Investor Owned | 1,483,524 | Not reporting | |
| National Grid (Massachusetts) | Investor Owned | 1,399,921 | Reporting |
Customer counts are each utility's statewide total in Massachusetts. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Barnstable County outage headlines in the past week.
Barnstable County power outage FAQ
Is the power out in Barnstable County right now?
No outages are currently reported for Barnstable County by participating utilities. Live coverage is limited here, so If your power is out, report it to your electric company.
Which electric company serves Barnstable County?
According to EIA-861 service territory data, NSTAR Electric Company, Massachusetts Electric Co provide electric service in Barnstable County, Massachusetts.
What was the worst power outage in Barnstable County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Oct 27–31, 2021. It peaked at 273,634 customers without power (100% of the county). NOAA storm reports for that period point to high winds.
How often does the power go out in Barnstable County?
EAGLE-I has recorded 317 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 21 hr 12 min of power per year, and on 72 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Barnstable County, MA Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/massachusetts/barnstable-county