County annual report · FIPS 08069
2015 Larimer County, CO Power Outage Report
In 2015, customers in Larimer County, CO went without power for an average of 1.1 hours, a total of 176K customer-hours (Colorado average 1.2 hours). That ranks 16th worst of 33 Colorado counties and 1691st of 2,484 nationally.
Compared with CO, the US
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Larimer County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 8, 2015 05:15 | November 9, 2015 14:00 | 1d 8h | 7,267 | 73K |
| 2 | April 17, 2015 00:00 | April 18, 2015 17:45 | 1d 17h | 4,026 | 28K |
| 3 | July 12, 2015 22:30 | July 14, 2015 00:15 | 1d 1h | 2,041 | 2,308 |
| 4 | April 18, 2015 18:45 | April 18, 2015 23:00 | 4h 15m | 2,030 | 3,604 |
| 5 | April 19, 2015 00:30 | April 19, 2015 00:45 | 15m | 2,030 | 508 |
| 6 | January 27, 2015 16:00 | January 27, 2015 22:45 | 6h 45m | 1,651 | 1,690 |
| 7 | February 24, 2015 17:15 | February 24, 2015 19:00 | 1h 45m | 1,347 | 850 |
| 8 | May 26, 2015 15:00 | May 29, 2015 02:30 | 2d 11h | 1,262 | 1,075 |
| 9 | September 3, 2015 20:15 | September 3, 2015 21:30 | 1h 15m | 1,203 | 714 |
| 10 | June 16, 2015 15:30 | June 16, 2015 18:45 | 3h 15m | 1,107 | 1,129 |
Outage episodes by size in 2015: 86 reached 100+ customers, 14 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 2015, 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 | 2015 | 1.6 hrs | 0.98 | 88 min | 0.95 |
| Poudre Valley REA, Inc | 2015 | 3.5 hrs | 1.63 | 2.0 hrs | 0.97 |
| City of Loveland - (CO) | 2015 | 38 min | 0.40 | 38 min | 0.40 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| High West Energy, Inc | - | - | - | - | - |
| Mountain Parks Electric, Inc | - | - | - | - | - |
| Town of Estes Park | - | - | - | - | - |
| City of Fort Collins - (CO) | - | - | - | - | - |
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 2015; 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, 2015, 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/2015/colorado/larimer-county