County annual report · FIPS 02170
2025 Matanuska-Susitna Borough, AK Power Outage Report
In 2025, customers in Matanuska-Susitna Borough, AK went without power for an average of 23.2 hours, a total of 1.4M customer-hours (Alaska average 10.9 hours). That ranks 2nd worst of 7 Alaska counties and 285th 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 Matanuska-Susitna 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 | December 6, 2025 06:00 | December 10, 2025 11:30 | 4d 5h | 21,218 | 852K |
| 2 | October 27, 2025 16:30 | October 28, 2025 00:00 | 7h 30m | 16,143 | 13K |
| 3 | January 12, 2025 11:15 | January 15, 2025 01:45 | 2d 14h | 7,726 | 99K |
| 4 | April 6, 2025 23:00 | April 7, 2025 02:00 | 3h | 6,081 | 2,973 |
| 5 | July 20, 2025 20:00 | July 21, 2025 01:45 | 5h 45m | 5,635 | 4,850 |
| 6 | October 17, 2025 08:45 | October 17, 2025 13:45 | 5h | 3,775 | 13K |
| 7 | August 6, 2025 12:15 | August 6, 2025 17:15 | 5h | 3,287 | 4,065 |
| 8 | September 24, 2025 23:45 | September 25, 2025 00:30 | 45m | 3,211 | 1,849 |
| 9 | December 28, 2025 11:45 | December 30, 2025 15:15 | 2d 3h | 3,002 | 41K |
| 10 | January 25, 2025 07:45 | January 30, 2025 05:45 | 4d 22h | 2,737 | 68K |
Outage episodes by size in 2025: 143 reached 100+ customers, 39 reached 1,000+ customers, 2 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 Matanuska-Susitna 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 |
|---|---|---|---|---|---|
| Matanuska Electric Assn Inc | 2024 | 4.3 hrs | 2.35 | 4.3 hrs | 2.35 |
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 ÷ 59,763 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. Matanuska-Susitna Borough has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Matanuska-Susitna 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/matanuska-susitna-borough