Power Out Map
– 0% of Grayson out 0 customers out in Virginia

Power outage history

Grayson County Virginia

53hours

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

3rd most of 123 in Virginia 8.0× the national median

Worst outage on record Hurricane Helene · Sep 27, 2024 100% of customers out · 90% back in 8.1 days
Hours without power, average customer per year 53h / yr State average 8.7 h · national median 6.6 h
Major outages a year 10.3 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 9.8days Hurricane Helene, over 1% of customers out
Outage hours on storm days 79% Share falling on days with a NOAA storm report here
Worst year 2024 7.1 days without power, average customer
Electricity customers 8,137 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 Grayson'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 7.1 days for the average customer. Hatched years have a thin record and are left out of the averages.

Grayson, hours without power per customer

GraysonUS median countyVirginia average
0 50 100 150 200 20 ’15 31 ’16 33 ’17 72 ’18 21 ’19 16 ’20 19 ’21 19 ’22 19 ’23 169 ’24 87 ’25 VA 8.7 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 8,137 100% 9.8 d 8.1 d 1.2M
Feb 11, 2025 Winter storm 8,137 100% 6.8 d 3.0 d 551k
Nov 15, 2018 Ice storm 7,299 90% 3.6 d 2.8 d 209k
Mar 7, 2016 No storm report 1,196 15% 3.9 d 38 h 108k
Oct 23, 2017 Tornadoes 6,119 75% 2.3 d 21 h 99k
Oct 20, 2018 Windstorm 6,139 75% 19 h 13 h 87k
Oct 8, 2017 Hurricane Nate 5,809 71% 25 h 17 h 68k
Oct 26, 2021 No storm report 5,686 70% 14 h 4.8 h 55k
Apr 2, 2016 Windstorm 2,723 33% 44 h 26 h 48k
Nov 2, 2020 No storm report 5,124 63% 19 h 16 h 45k
Jun 10, 2018 No storm report 5,040 62% 18 h 18 h 41k
Jan 27, 2021 Winter storm 1,920 24% 40 h 25 h 39k

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 +18h 90% by +26h

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 Grayson from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • Tropical storm 40%
  • Winter storm 23%
  • No storm on record 21%
  • Windstorm 9.0%
  • Ice storm 6.5%

Who keeps the lights on

Utilities serving Grayson

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Appalachian Power Co Investor Owned 1,116 328 2.36 17.2 468k

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 Virginia

Where it is darkest

Hours / yr64+

All Virginia 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 8,137 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 →