Power outage history
Weld County Colorado
3.8hours
without power for the average customer in a typical year, 2018–2025
14th most of 39 in Colorado 43% below the national median
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 Weld's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2021 was the worst well-recorded year, at 8.3 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Weld, hours without power per customer
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 |
|---|---|---|---|---|---|---|
| Mar 14, 2021 | Winter storm | 31,733 | 26% | 2.2 d | 32 h | 705k |
| Mar 23, 2016 | Winter storm | 39,618 | 32% | 2.4 d | 29 h | 571k |
| Dec 17, 2025 | Windstorm | 10,855 | 9% | 23 h | 15 h | 109k |
| Apr 6, 2024 | Windstorm | 5,521 | 5% | 17 h | 7.5 h | 47k |
| Aug 29, 2024 | No storm report | 8,967 | 7% | 8.5 h | 3.5 h | 44k |
| Jul 28, 2023 | Thunderstorms | 17,817 | 15% | 2.5 h | 2.5 h | 35k |
| Mar 19, 2020 | Winter storm | 6,414 | 5% | 11 h | 8.2 h | 35k |
| Jan 18, 2024 | Winter storm | 14,721 | 12% | 2.8 h | 2.0 h | 31k |
| Dec 23, 2017 | No storm report | 8,004 | 7% | 4.5 h | 3.2 h | 28k |
| Aug 18, 2023 | No storm report | 18,854 | 15% | 2.0 h | 1.8 h | 26k |
| Jun 26, 2015 | Thunderstorms | 10,675 | 9% | 2.8 h | 2.5 h | 24k |
| Jan 25, 2016 | No storm report | 10,336 | 8% | 2.2 h | 13 h | 23k |
| Feb 11, 2025 | No storm report | 5,171 | 4% | 4.5 h | 4.5 h | 23k |
| Nov 25, 2021 | No storm report | 6,366 | 5% | 5.8 h | 5.5 h | 23k |
| Jul 4, 2023 | No storm report | 9,228 | 8% | 3.0 h | 48 min | 21k |
| Mar 14, 2025 | Windstorm | 6,252 | 5% | 5.8 h | 5.5 h | 21k |
| Aug 15, 2015 | No storm report | 3,213 | 3% | 7.5 h | – | 20k |
| Jun 20, 2023 | No storm report | 3,262 | 3% | 12 h | – | 20k |
| Jul 9, 2025 | No storm report | 8,302 | 7% | 3.5 h | 3.5 h | 19k |
| Oct 11, 2020 | Windstorm | 4,178 | 3% | 8.0 h | – | 17k |
| Jul 17, 2023 | No storm report | 3,650 | 3% | 7.0 h | – | 17k |
| Oct 24, 2024 | No storm report | 8,560 | 7% | 5.2 h | 48 min | 17k |
| Aug 10, 2017 | Thunderstorms | 7,398 | 6% | 3.0 h | 2.2 h | 16k |
| Feb 25, 2025 | No storm report | 3,261 | 3% | 5.8 h | – | 16k |
| Oct 14, 2017 | No storm report | 3,008 | 2% | 7.0 h | – | 16k |
| May 31, 2023 | Thunderstorms | 5,415 | 4% | 5.8 h | 4.5 h | 16k |
| Mar 13, 2019 | Winter storm | 2,490 | 2% | 6.8 h | – | 14k |
| Jul 17, 2017 | No storm report | 6,555 | 5% | 2.2 h | 1.2 h | 14k |
| Jun 12, 2024 | Windstorm | 4,609 | 4% | 4.2 h | – | 14k |
| Jul 28, 2021 | No storm report | 3,314 | 3% | 9.0 h | – | 14k |
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 Weld from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 40%
- Winter storm 40%
- Windstorm 12%
- Thunderstorms 6.0%
- Wildfire 1.4%
Who keeps the lights on
Utilities serving Weld
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 |
| United Power, Inc | Cooperative | 303 | 90 | 1.18 | 16.5 | 103k |
| Poudre Valley REA, Inc | Cooperative | 151 | 49 | 1.03 | 12.5 | 51k |
| City of Longmont | Municipal | 40 | 40 | 0.56 | 13.1 | 41k |
| Morgan County Rural Elec Assn | Cooperative | 86 | 86 | – | 14.5 | 5.9k |
| Highline Electric Assn | Cooperative | – | – | – | 15.2 | 5.0k |
| High West Energy, Inc | Cooperative | – | – | – | 15.1 | 671 |
| 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
- Boulder 5.3 h
- Logan 4.9 h
- Weld (this county) 3.8 h
- Adams 2.4 h
- Morgan 2.1 h
- Larimer 1.8 h
- Broomfield 1.8 h
- Laramie, WY 1.0 h
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 122,323 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 →