County annual report · FIPS 08013
2025 Boulder County, CO Power Outage Report
In 2025, customers in Boulder County, CO went without power for an average of 16.9 hours, a total of 2.8M customer-hours (Colorado average 4.6 hours). That ranks 7th worst of 52 Colorado counties and 437th of 3,000 nationally.
Compared with CO, the US and 2024
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Boulder County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 17, 2025 15:30 | December 26, 2025 23:15 | 9d 7h | 60,021 | 2.4M |
| 2 | February 3, 2025 01:00 | February 4, 2025 04:00 | 1d 3h | 8,660 | 17K |
| 3 | December 27, 2025 14:15 | December 28, 2025 00:30 | 10h 15m | 6,508 | 7,140 |
| 4 | December 31, 2025 17:30 | December 31, 2025 23:45 | 6h 15m | 5,673 | 1,426 |
| 5 | March 14, 2025 14:15 | March 18, 2025 00:45 | 3d 10h | 5,417 | 23K |
| 6 | May 28, 2025 11:15 | May 29, 2025 00:45 | 13h 30m | 5,361 | 5,566 |
| 7 | September 30, 2025 14:45 | October 1, 2025 05:00 | 14h 15m | 4,652 | 4,328 |
| 8 | April 1, 2025 14:30 | April 2, 2025 02:30 | 12h | 4,625 | 4,742 |
| 9 | May 1, 2025 12:30 | May 2, 2025 02:00 | 13h 30m | 4,567 | 3,231 |
| 10 | October 27, 2025 02:15 | October 27, 2025 21:45 | 19h 30m | 4,377 | 6,203 |
Outage episodes by size in 2025: 166 reached 100+ customers, 62 reached 1,000+ customers, 1 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 Boulder County reported on EIA Form 861 for 2025, 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 | 2024 | 5.9 hrs | 1.68 | 2.6 hrs | 1.36 |
| United Power, Inc | 2024 | 77 min | 1.20 | 77 min | 1.20 |
| Poudre Valley REA, Inc | 2024 | 5.4 hrs | 1.33 | 74 min | 0.72 |
| City of Longmont | 2024 | 19 min | 0.47 | 19 min | 0.47 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Town of Estes Park | - | - | - | - | - |
| Town of Lyons - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 166,613 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. Boulder County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Boulder County, CO annual power outage report, 2025, 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/2025/colorado/boulder-county