County annual report · FIPS 49037
2018 San Juan County, UT Power Outage Report
In 2018, customers in San Juan County, UT went without power for an average of 1.7 hours, a total of 8,540 customer-hours (Utah average 1.9 hours). That ranks 19th worst of 26 Utah counties and 2012th of 2,798 nationally.
Compared with UT, the US and 2017
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in San Juan 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 | August 21, 2018 19:30 | August 22, 2018 01:00 | 5h 30m | 409 | 1,408 |
| 2 | December 12, 2018 20:45 | December 12, 2018 21:00 | 15m | 348 | 87 |
| 3 | February 6, 2018 12:45 | February 6, 2018 15:45 | 3h | 347 | 1,041 |
| 4 | November 13, 2018 17:30 | November 13, 2018 18:15 | 45m | 347 | 260 |
| 5 | September 9, 2018 12:00 | September 9, 2018 13:45 | 1h 45m | 346 | 504 |
| 6 | August 13, 2018 02:00 | August 13, 2018 06:30 | 4h 30m | 345 | 1,537 |
| 7 | August 17, 2018 06:15 | August 17, 2018 09:45 | 3h 30m | 264 | 784 |
| 8 | August 15, 2018 12:15 | August 15, 2018 13:00 | 45m | 261 | 196 |
| 9 | April 10, 2018 21:45 | April 10, 2018 22:00 | 15m | 260 | 65 |
| 10 | September 1, 2018 14:45 | September 1, 2018 18:45 | 4h | 205 | 639 |
Outage episodes by size in 2018: 15 reached 100+ customers, 0 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 San Juan 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| Empire Electric Assn, Inc | 2018 | 66 min | 0.60 | 66 min | 0.60 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Navajo Tribal Utility Authority | - | - | - | - | - |
| City of Blanding - (UT) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 80% of Utah's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,137 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. San Juan County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), San Juan County, UT 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/utah/san-juan-county