County annual report · FIPS 02068
2018 Denali Borough, AK Power Outage Report
In 2018, customers in Denali Borough, AK went without power for an average of 14.5 hours, a total of 15K customer-hours (Alaska average 6.2 hours). That ranks 2nd worst of 7 Alaska counties and 385th of 2,798 nationally.
Compared with AK, the US and 2017
Coverage line is EAGLE-I's share of Alaska customers tracked each year.
Biggest outages in Denali Borough, 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 | December 22, 2018 02:45 | December 22, 2018 03:30 | 45m | 1,358 | 749 |
| 2 | July 1, 2018 16:00 | July 1, 2018 16:30 | 30m | 795 | 398 |
| 3 | August 6, 2018 09:30 | August 6, 2018 14:30 | 5h | 795 | 3,975 |
| 4 | July 26, 2018 22:45 | July 26, 2018 23:30 | 45m | 395 | 296 |
| 5 | August 3, 2018 01:30 | August 3, 2018 02:45 | 1h 15m | 395 | 483 |
| 6 | November 5, 2018 17:15 | November 5, 2018 17:45 | 30m | 386 | 97 |
| 7 | December 3, 2018 07:00 | December 3, 2018 07:45 | 45m | 382 | 287 |
| 8 | December 15, 2018 18:00 | December 15, 2018 18:15 | 15m | 382 | 96 |
| 9 | December 12, 2018 18:00 | December 12, 2018 18:30 | 30m | 379 | 95 |
| 10 | December 14, 2018 11:30 | December 14, 2018 12:00 | 30m | 378 | 189 |
Outage episodes by size in 2018: 23 reached 100+ customers, 1 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 Denali Borough 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 |
|---|---|---|---|---|---|
| Golden Valley Elec Assn Inc | 2018 | 8.8 hrs | 6.61 | 5.5 hrs | 5.26 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 67% of Alaska's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,014 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. Denali Borough has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Denali Borough, AK 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/alaska/denali-borough