County annual report · FIPS 08031
2018 Denver County, CO Power Outage Report
In 2018, customers in Denver County, CO went without power for an average of 2.4 hours, a total of 972K customer-hours (Colorado average 1.6 hours). That ranks 11th worst of 49 Colorado counties and 1680th of 2,798 nationally.
Compared with CO, the US and 2017
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Denver County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 16, 2018 11:30 | October 17, 2018 08:30 | 21h | 27,960 | 38K |
| 2 | April 16, 2018 23:30 | April 23, 2018 07:00 | 6d 7h | 25,179 | 250K |
| 3 | September 17, 2018 14:00 | September 18, 2018 11:45 | 21h 45m | 15,795 | 4,803 |
| 4 | November 28, 2018 16:15 | November 29, 2018 02:00 | 9h 45m | 14,173 | 18K |
| 5 | December 9, 2018 16:15 | December 10, 2018 00:45 | 8h 30m | 9,540 | 5,217 |
| 6 | November 10, 2018 15:00 | November 22, 2018 00:45 | 11d 9h | 8,855 | 15K |
| 7 | February 8, 2018 16:30 | February 9, 2018 03:45 | 11h 15m | 8,542 | 5,632 |
| 8 | October 2, 2018 20:30 | October 4, 2018 07:30 | 1d 11h | 8,419 | 18K |
| 9 | July 23, 2018 14:15 | July 30, 2018 00:00 | 6d 9h | 7,085 | 61K |
| 10 | May 4, 2018 20:45 | May 5, 2018 04:00 | 7h 15m | 6,722 | 6,568 |
Outage episodes by size in 2018: 203 reached 100+ customers, 71 reached 1,000+ customers, 4 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 2018, 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 | 2018 | 1.9 hrs | 1.02 | 1.6 hrs | 0.98 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 88% of Colorado's customers in 2018; 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, 2018, 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/2018/colorado/denver-county