County annual report · FIPS 08117
2018 Summit County, CO Power Outage Report
In 2018, customers in Summit County, CO went without power for an average of 13.9 hours, a total of 224K customer-hours (Colorado average 1.6 hours). That ranks 1st worst of 49 Colorado counties and 403rd of 2,798 nationally.
Compared with CO, the US and 2017
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Summit County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 13, 2018 23:15 | September 14, 2018 03:15 | 4h | 6,169 | 11K |
| 2 | June 23, 2018 07:45 | June 24, 2018 05:30 | 21h 45m | 5,485 | 53K |
| 3 | June 8, 2018 07:00 | June 8, 2018 09:00 | 2h | 5,310 | 9,411 |
| 4 | April 7, 2018 07:30 | April 8, 2018 09:45 | 1d 2h | 3,862 | 29K |
| 5 | December 20, 2018 17:00 | December 20, 2018 18:15 | 1h 15m | 3,116 | 1,221 |
| 6 | June 28, 2018 23:00 | June 29, 2018 19:15 | 20h 15m | 2,327 | 6,100 |
| 7 | February 21, 2018 11:15 | February 21, 2018 21:00 | 9h 45m | 2,147 | 14K |
| 8 | October 3, 2018 19:15 | October 3, 2018 23:15 | 4h | 2,102 | 3,706 |
| 9 | November 7, 2018 18:45 | November 7, 2018 20:30 | 1h 45m | 2,069 | 3,621 |
| 10 | July 15, 2018 02:15 | July 15, 2018 03:45 | 1h 30m | 1,483 | 1,196 |
Outage episodes by size in 2018: 50 reached 100+ customers, 12 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 2018, 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 | 2018 | 1.9 hrs | 1.02 | 1.6 hrs | 0.98 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Mountain Parks Electric, 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 88% of Colorado's customers in 2018; 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, 2018, 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/2018/colorado/summit-county