Power Out Map
– 0% of Summit out 0 customers out in Colorado

Power outage history

Summit County Colorado

9.8hours

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

7th most of 39 in Colorado 1.5× the national median

Worst outage on record Feb 8, 2019 100% of customers out · 90% back in 6.0 hours
Hours without power, average customer per year 9.8h / yr State average 3.0 h · national median 6.6 h
Major outages a year 8.0 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 47hours Dec 17, 2025, over 1% of customers out
Outage hours on storm days 25% Share falling on days with a NOAA storm report here
Worst year 2025 15 hours without power, average customer
Electricity customers 16,131 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 Summit'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

2025 was the worst well-recorded year, at 15 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Summit, hours without power per customer

SummitUS median countyColorado average
0 5 10 15 20 3.7 ’15 3.0 ’16 9.4 ’17 14 ’18 9.7 ’19 6.5 ’20 5.8 ’21 6.1 ’22 7.3 ’23 14 ’24 15 ’25 US 6.6 CO 3.0

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
Feb 8, 2019 No storm report 16,131 100% 8.0 h 6.0 h 90k
Dec 17, 2025 Windstorm 4,017 25% 47 h 13 h 74k
Oct 1, 2017 Winter storm 13,497 84% 21 h 8.8 h 62k
Jun 23, 2018 No storm report 5,485 34% 21 h 16 h 53k
Apr 7, 2018 Winter storm 3,862 24% 37 h 13 h 34k
Dec 23, 2017 Winter storm 2,410 15% 18 h 11 h 31k
Oct 16, 2020 Wildfire 2,137 13% 18 h 13 h 29k
Jan 13, 2024 Winter storm 1,714 11% 25 h 24 h 26k
Jun 5, 2024 No storm report 2,685 17% 9.2 h 2.2 h 25k
May 27, 2015 No storm report 1,760 11% 14 h 14 h 24k
Jun 12, 2018 No storm report 814 5% 29 h 29 h 23k
Oct 29, 2023 Winter storm 2,465 15% 18 h 2.8 h 20k

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 +6h 90% by +14h

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

  • No storm on record 75%
  • Winter storm 15%
  • Windstorm 7.8%
  • Wildfire 2.9%

Who keeps the lights on

Utilities serving Summit

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Public Service Co of Colorado Investor Owned 360 149 1.58 15.9 1.4M
Mountain Parks Electric, Inc Cooperative 181 122 2.42 17.5 20k
WAPA-- Western Area Power Administration Federal – – – – –

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 Colorado

Where it is darkest

Hours / yr64+

All Colorado 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 16,131 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 →