County annual report · FIPS 08059
2020 Jefferson County, CO Power Outage Report
In 2020, customers in Jefferson County, CO went without power for an average of 2.6 hours, a total of 722K customer-hours (Colorado average 2.2 hours). That ranks 24th worst of 57 Colorado counties and 2016th of 3,019 nationally.
Compared with CO, the US and 2019
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Jefferson County, 2020
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 11, 2020 14:30 | June 12, 2020 02:45 | 12h 15m | 34,885 | 27K |
| 2 | October 11, 2020 20:15 | October 13, 2020 07:30 | 1d 11h | 15,411 | 64K |
| 3 | June 6, 2020 12:00 | June 10, 2020 19:30 | 4d 7h | 14,351 | 196K |
| 4 | November 2, 2020 13:45 | November 20, 2020 16:00 | 18d 2h | 7,036 | 27K |
| 5 | June 28, 2020 06:15 | June 29, 2020 01:00 | 18h 45m | 5,811 | 16K |
| 6 | September 8, 2020 06:15 | September 13, 2020 01:00 | 4d 18h | 4,978 | 41K |
| 7 | June 19, 2020 15:30 | June 20, 2020 03:30 | 12h | 4,470 | 6,081 |
| 8 | July 16, 2020 15:15 | July 17, 2020 06:30 | 15h 15m | 4,358 | 12K |
| 9 | July 17, 2020 14:45 | July 19, 2020 05:15 | 1d 14h | 4,291 | 9,026 |
| 10 | February 3, 2020 17:45 | February 4, 2020 01:30 | 7h 45m | 4,156 | 5,374 |
Outage episodes by size in 2020: 190 reached 100+ customers, 49 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 Jefferson County reported on EIA Form 861 for 2020, 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 | 2020 | 2.3 hrs | 1.03 | 83 min | 0.85 |
| CORE Electric Cooperative | 2020 | 2.0 hrs | 0.77 | 89 min | 0.68 |
| United Power, Inc | 2020 | 2.6 hrs | 0.91 | 71 min | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 84% of Colorado's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 278,207 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, CO annual power outage report, 2020, 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/2020/colorado/jefferson-county