County annual report · FIPS 08117
2023 Summit County, CO Power Outage Report
In 2023, customers in Summit County, CO went without power for an average of 7.4 hours, a total of 120K customer-hours (Colorado average 2.1 hours). That ranks 6th worst of 52 Colorado counties and 1093rd of 2,977 nationally.
Compared with CO, the US and 2022
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Summit County, 2023
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 18, 2023 11:15 | May 19, 2023 09:45 | 22h 30m | 4,702 | 11K |
| 2 | November 7, 2023 20:15 | November 7, 2023 23:45 | 3h 30m | 3,936 | 3,711 |
| 3 | February 18, 2023 16:45 | February 18, 2023 19:45 | 3h | 2,746 | 2,996 |
| 4 | January 16, 2023 10:30 | January 16, 2023 22:30 | 12h | 2,616 | 3,671 |
| 5 | October 29, 2023 01:15 | October 31, 2023 02:45 | 2d 1h | 2,465 | 21K |
| 6 | June 17, 2023 18:00 | June 17, 2023 21:15 | 3h 15m | 2,192 | 2,648 |
| 7 | March 29, 2023 15:45 | March 29, 2023 19:00 | 3h 15m | 2,124 | 4,078 |
| 8 | July 9, 2023 23:00 | July 10, 2023 16:45 | 17h 45m | 2,072 | 4,824 |
| 9 | August 28, 2023 13:15 | August 28, 2023 15:15 | 2h | 1,998 | 2,110 |
| 10 | October 10, 2023 16:45 | October 10, 2023 20:00 | 3h 15m | 1,458 | 367 |
Outage episodes by size in 2023: 60 reached 100+ customers, 13 reached 1,000+ customers, 0 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 Summit County reported on EIA Form 861 for 2023, 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 | 2023 | 1.9 hrs | 1.02 | 1.7 hrs | 0.98 |
| Mountain Parks Electric, Inc | 2023 | 74 min | 0.88 | 74 min | 0.88 |
| 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 n/a of Colorado's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,131 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. Summit County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Summit County, CO annual power outage report, 2023, 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/2023/colorado/summit-county