County annual report · FIPS 02020
2017 Anchorage Municipality, AK Power Outage Report
In 2017, customers in Anchorage Municipality, AK went without power for an average of 1.2 hours, a total of 132K customer-hours (Alaska average 1.8 hours). That ranks 5th worst of 7 Alaska counties and 1962nd of 2,786 nationally.
Compared with AK, the US
Coverage line is EAGLE-I's share of Alaska customers tracked each year.
Biggest outages in Anchorage Municipality, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 4, 2017 08:45 | October 4, 2017 18:15 | 9h 30m | 6,171 | 17K |
| 2 | September 6, 2017 07:00 | September 8, 2017 06:30 | 1d 23h | 4,115 | 16K |
| 3 | May 6, 2017 22:00 | May 7, 2017 00:00 | 2h | 3,433 | 4,782 |
| 4 | September 12, 2017 23:30 | September 13, 2017 00:30 | 1h | 3,309 | 1,651 |
| 5 | April 6, 2017 05:00 | April 6, 2017 15:30 | 10h 30m | 2,297 | 17K |
| 6 | June 12, 2017 20:00 | June 12, 2017 22:30 | 2h 30m | 1,995 | 599 |
| 7 | August 3, 2017 14:00 | August 4, 2017 02:45 | 12h 45m | 1,974 | 1,375 |
| 8 | October 25, 2017 19:45 | October 25, 2017 22:00 | 2h 15m | 1,962 | 1,542 |
| 9 | May 16, 2017 15:45 | May 16, 2017 16:00 | 15m | 1,957 | 489 |
| 10 | May 25, 2017 15:30 | May 27, 2017 01:45 | 1d 10h | 1,711 | 3,917 |
Outage episodes by size in 2017: 66 reached 100+ customers, 19 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 Anchorage Municipality reported on EIA Form 861 for 2017, 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 |
|---|---|---|---|---|---|
| Chugach Electric Assn Inc | 2017 | 1.5 hrs | 0.70 | - | - |
| Matanuska Electric Assn Inc | 2017 | 3.1 hrs | 1.28 | 2.5 hrs | 1.17 |
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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 110,430 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. Anchorage Municipality has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Anchorage Municipality, AK annual power outage report, 2017, 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/2017/alaska/anchorage-municipality