County annual report · FIPS 08035
2021 Douglas County, CO Power Outage Report
In 2021, customers in Douglas County, CO went without power for an average of 0.9 hours, a total of 138K customer-hours (Colorado average 2.8 hours). That ranks 43rd worst of 52 Colorado counties and 2708th of 2,974 nationally.
Compared with CO, the US and 2020
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Douglas County, 2021
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 28, 2021 21:45 | June 29, 2021 10:15 | 12h 30m | 24,204 | 24K |
| 2 | June 14, 2021 13:00 | June 18, 2021 19:30 | 4d 6h | 7,708 | 18K |
| 3 | February 14, 2021 13:15 | February 14, 2021 18:00 | 4h 45m | 2,755 | 2,365 |
| 4 | September 5, 2021 11:15 | September 5, 2021 17:45 | 6h 30m | 2,695 | 3,235 |
| 5 | December 30, 2021 16:15 | December 31, 2021 00:15 | 8h | 2,650 | 12K |
| 6 | July 30, 2021 00:45 | July 30, 2021 06:30 | 5h 45m | 2,540 | 2,065 |
| 7 | September 10, 2021 00:15 | September 10, 2021 02:30 | 2h 15m | 2,540 | 1,272 |
| 8 | September 3, 2021 18:15 | September 4, 2021 06:00 | 11h 45m | 2,172 | 5,357 |
| 9 | February 28, 2021 17:45 | March 1, 2021 01:45 | 8h | 2,061 | 691 |
| 10 | August 18, 2021 14:45 | August 19, 2021 03:00 | 12h 15m | 1,986 | 1,871 |
Outage episodes by size in 2021: 68 reached 100+ customers, 19 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 Douglas County reported on EIA Form 861 for 2021, 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 | 2021 | 3.0 hrs | 1.20 | 2.2 hrs | 1.00 |
| CORE Electric Cooperative | 2021 | 2.7 hrs | 0.91 | 46 min | 0.54 |
| Mountain View Elec Assn, Inc | 2021 | 50 min | 0.56 | 50 min | 0.56 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Colorado's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 157,251 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. Douglas County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Douglas County, CO annual power outage report, 2021, 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/2021/colorado/douglas-county