County annual report · FIPS 08031
2025 Denver County, CO Power Outage Report
In 2025, customers in Denver County, CO went without power for an average of 2.0 hours, a total of 796K customer-hours (Colorado average 4.6 hours). That ranks 34th worst of 52 Colorado counties and 2421st 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 Denver 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 | January 8, 2025 10:45 | January 9, 2025 03:45 | 17h | 20,461 | 6,358 |
| 2 | December 17, 2025 13:30 | December 22, 2025 01:30 | 4d 12h | 16,168 | 139K |
| 3 | April 14, 2025 12:00 | April 15, 2025 11:30 | 23h 30m | 15,184 | 15K |
| 4 | July 8, 2025 13:30 | July 12, 2025 11:15 | 3d 21h | 7,738 | 34K |
| 5 | September 28, 2025 09:00 | September 29, 2025 13:00 | 1d 4h | 6,489 | 16K |
| 6 | July 30, 2025 13:30 | July 31, 2025 04:15 | 14h 45m | 6,020 | 6,922 |
| 7 | December 31, 2025 17:30 | December 31, 2025 23:15 | 5h 45m | 5,274 | 4,428 |
| 8 | May 18, 2025 14:00 | May 19, 2025 03:45 | 13h 45m | 5,124 | 3,944 |
| 9 | November 10, 2025 03:30 | November 10, 2025 08:30 | 5h | 5,001 | 5,266 |
| 10 | August 4, 2025 14:00 | August 5, 2025 09:15 | 19h 15m | 4,968 | 20K |
Outage episodes by size in 2025: 276 reached 100+ customers, 69 reached 1,000+ customers, 3 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 Denver 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 |
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 ÷ 398,898 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. Denver County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Denver 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/denver-county