County annual report · FIPS 08001
2021 Adams County, CO Power Outage Report
In 2021, customers in Adams County, CO went without power for an average of 1.6 hours, a total of 389K customer-hours (Colorado average 2.8 hours). That ranks 35th worst of 52 Colorado counties and 2405th 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 Adams 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 | May 29, 2021 11:30 | May 29, 2021 18:45 | 7h 15m | 18,856 | 36K |
| 2 | October 6, 2021 03:30 | October 6, 2021 23:45 | 20h 15m | 12,548 | 3,391 |
| 3 | March 4, 2021 16:30 | March 6, 2021 03:15 | 1d 10h | 8,418 | 11K |
| 4 | March 1, 2021 18:00 | March 2, 2021 02:30 | 8h 30m | 6,703 | 1,695 |
| 5 | March 10, 2021 21:15 | March 11, 2021 02:15 | 5h | 4,446 | 6,580 |
| 6 | December 14, 2021 15:30 | December 18, 2021 14:45 | 3d 23h | 4,444 | 15K |
| 7 | August 8, 2021 14:15 | August 13, 2021 04:30 | 4d 14h | 4,374 | 14K |
| 8 | June 17, 2021 07:15 | June 17, 2021 09:45 | 2h 30m | 3,978 | 6,962 |
| 9 | March 14, 2021 13:00 | March 15, 2021 10:15 | 21h 15m | 3,823 | 13K |
| 10 | June 5, 2021 22:00 | June 7, 2021 06:45 | 1d 8h | 3,818 | 11K |
Outage episodes by size in 2021: 180 reached 100+ customers, 41 reached 1,000+ customers, 2 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 Adams 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 |
| United Power, Inc | 2021 | 85 min | 0.80 | 68 min | - |
| Morgan County Rural Elec Assn | - | - | - | - | - |
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 ÷ 243,036 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. Adams County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Adams 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/adams-county