Power Out Map
– 0% of Alleghany out 0 customers out in North Carolina

Power outage history

Alleghany County North Carolina

11hours

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

39th most of 100 in North Carolina 1.7× the national median

Worst outage on record Hurricane Helene · Sep 28, 2024 56% of customers out · 90% back in 6.5 days
Hours without power, average customer per year 11h / yr State average 8.3 h · national median 6.6 h
Major outages a year 2.6 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 9.4days Hurricane Helene, over 1% of customers out
Outage hours on storm days 92% Share falling on days with a NOAA storm report here
Worst year 2024 2.2 days without power, average customer
Electricity customers 7,617 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 Alleghany'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

2024 was the worst well-recorded year, at 2.2 days for the average customer. Hatched years have a thin record and are left out of the averages.

Alleghany, hours without power per customer

AlleghanyUS median countyNorth Carolina average
0 20 40 60 0.2 ’15 2.8 ’16 8.3 ’17 8.2 ’18 1.9 ’19 1.2 ’20 2.6 ’21 3.4 ’22 1.8 ’23 52 ’24 19 ’25 NC 8.3 US 6.6

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
Sep 27, 2024 Hurricane Helene 4,295 56% 9.4 d 6.5 d 388k
Feb 12, 2025 Winter storm 2,980 39% 4.7 d 2.4 d 121k
Oct 23, 2017 Thunderstorms 3,516 46% 43 h 25 h 53k
Nov 15, 2018 Ice storm 2,518 33% 2.4 d 46 h 47k
Sep 13, 2016 No storm report 5,385 71% 2.0 h 1.8 h 6.0k
Mar 2, 2018 Windstorm 604 8% 34 h 26 h 5.9k
Jun 10, 2021 No storm report 7,617 100% 48 min 30 min 5.7k
Jul 9, 2016 No storm report 1,483 19% 5.0 h 5.2 h 5.5k
Mar 5, 2025 No storm report 725 10% 11 h 6.8 h 3.7k
Jan 28, 2021 Winter storm 1,834 24% 11 h 2.5 h 3.7k
Mar 2, 2023 No storm report 3,733 49% 2.0 h 1.8 h 3.4k
May 6, 2022 Thunderstorms 2,228 29% 2.8 h 1.2 h 3.2k

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.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +2h 90% by +8h

When it happens

The outage clock

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

00061218 Jan inside

What was happening

Weather behind the outages

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

  • Tropical storm 62%
  • Winter storm 20%
  • No storm on record 7.7%
  • Ice storm 7.4%
  • Windstorm 2.1%
  • Thunderstorms 0.5%

Who keeps the lights on

Utilities serving Alleghany

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Blue Ridge Elec Member Corp Cooperative 542 110 2.22 14.9 72k

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

Across North Carolina

Where it is darkest

Hours / yr64+

All North Carolina 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 7,617 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 →