County annual report · FIPS 02068
2025 Denali Borough, AK Power Outage Report
In 2025, customers in Denali Borough, AK went without power for an average of 40.8 hours, a total of 41K customer-hours (Alaska average 10.9 hours). That ranks 1st worst of 7 Alaska counties and 116th of 3,000 nationally.
Compared with AK, the US and 2024
Coverage line is EAGLE-I's share of Alaska customers tracked each year.
Biggest outages in Denali Borough, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 19, 2025 02:30 | June 19, 2025 06:00 | 3h 30m | 859 | 2,792 |
| 2 | August 11, 2025 22:30 | August 11, 2025 23:00 | 30m | 454 | 114 |
| 3 | August 14, 2025 22:15 | August 14, 2025 22:45 | 30m | 454 | 126 |
| 4 | May 15, 2025 18:15 | May 15, 2025 18:45 | 30m | 444 | 222 |
| 5 | May 22, 2025 08:45 | May 22, 2025 09:30 | 45m | 444 | 333 |
| 6 | October 31, 2025 00:30 | October 31, 2025 00:45 | 15m | 444 | 111 |
| 7 | May 15, 2025 23:15 | May 15, 2025 23:30 | 15m | 443 | 111 |
| 8 | May 21, 2025 18:15 | May 21, 2025 18:45 | 30m | 443 | 187 |
| 9 | October 2, 2025 05:15 | October 2, 2025 11:00 | 5h 45m | 441 | 2,536 |
| 10 | May 8, 2025 01:15 | May 8, 2025 01:45 | 30m | 440 | 209 |
Outage episodes by size in 2025: 42 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 Denali Borough reported on EIA Form 861 for 2025, 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 | 2024 | 9.2 hrs | 2.63 | 3.7 hrs | 1.96 |
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 Alaska's customers in 2025; 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, 2025, 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/2025/alaska/denali-borough