County annual report · FIPS 08077
2021 Mesa County, CO Power Outage Report
In 2021, customers in Mesa County, CO went without power for an average of 2.1 hours, a total of 169K customer-hours (Colorado average 2.8 hours). That ranks 29th worst of 52 Colorado counties and 2164th 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 Mesa 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 24, 2021 21:30 | May 25, 2021 04:30 | 7h | 23,030 | 40K |
| 2 | May 24, 2021 05:00 | May 24, 2021 09:30 | 4h 30m | 23,014 | 46K |
| 3 | April 4, 2021 19:30 | April 4, 2021 21:45 | 2h 15m | 4,511 | 7,921 |
| 4 | December 25, 2021 17:15 | December 25, 2021 23:45 | 6h 30m | 2,546 | 3,317 |
| 5 | May 19, 2021 02:00 | May 19, 2021 13:45 | 11h 45m | 1,219 | 2,164 |
| 6 | September 13, 2021 14:00 | September 14, 2021 02:00 | 12h | 1,040 | 305 |
| 7 | April 20, 2021 15:30 | April 20, 2021 21:30 | 6h | 967 | 251 |
| 8 | October 8, 2021 23:00 | October 9, 2021 01:00 | 2h | 949 | 1,897 |
| 9 | October 26, 2021 07:15 | October 27, 2021 16:45 | 1d 9h | 707 | 1,740 |
| 10 | December 19, 2021 21:45 | December 20, 2021 06:00 | 8h 15m | 707 | 4,220 |
Outage episodes by size in 2021: 63 reached 100+ customers, 6 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 Mesa 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 |
| Holy Cross Electric Assn, Inc | 2021 | 68 min | 0.91 | 68 min | 0.91 |
| Grand Valley Power | 2021 | 45 min | - | 45 min | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| San Miguel Power Assn, Inc | - | - | - | - | - |
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 ÷ 78,542 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. Mesa County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mesa 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/mesa-county