County annual report · FIPS 08069
2023 Larimer County, CO Power Outage Report
In 2023, customers in Larimer County, CO went without power for an average of 0.7 hours, a total of 114K customer-hours (Colorado average 2.1 hours). That ranks 44th worst of 52 Colorado counties and 2758th of 2,977 nationally.
Compared with CO, the US and 2022
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Larimer County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 27, 2023 16:15 | June 27, 2023 23:15 | 7h | 3,735 | 3,230 |
| 2 | May 31, 2023 23:00 | June 1, 2023 00:00 | 1h | 3,597 | 2,416 |
| 3 | June 11, 2023 13:45 | June 21, 2023 17:45 | 10d 4h | 3,252 | 11K |
| 4 | December 20, 2023 16:15 | December 20, 2023 18:30 | 2h 15m | 2,911 | 6,132 |
| 5 | August 15, 2023 22:15 | August 16, 2023 20:45 | 22h 30m | 2,677 | 4,343 |
| 6 | December 7, 2023 14:45 | December 7, 2023 23:30 | 8h 45m | 2,250 | 3,288 |
| 7 | December 12, 2023 02:45 | December 12, 2023 04:45 | 2h | 1,681 | 3,360 |
| 8 | August 31, 2023 23:15 | September 1, 2023 02:15 | 3h | 1,648 | 3,694 |
| 9 | September 16, 2023 11:45 | September 16, 2023 19:45 | 8h | 1,619 | 7,782 |
| 10 | March 30, 2023 15:00 | March 30, 2023 23:00 | 8h | 1,410 | 413 |
Outage episodes by size in 2023: 75 reached 100+ customers, 15 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Larimer County reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Public Service Co of Colorado | 2023 | 1.9 hrs | 1.02 | 1.7 hrs | 0.98 |
| Mountain Parks Electric, Inc | 2023 | 74 min | 0.88 | 74 min | 0.88 |
| Poudre Valley REA, Inc | 2023 | 67 min | 0.68 | 67 min | 0.68 |
| City of Fort Collins - (CO) | 2023 | 20 min | 0.24 | 20 min | 0.24 |
| City of Loveland - (CO) | 2023 | 21 min | 0.27 | 21 min | 0.27 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| High West Energy, Inc | - | - | - | - | - |
| Town of Estes Park | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Colorado's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 154,680 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Larimer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Larimer County, CO annual power outage report, 2023, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2023/colorado/larimer-county