Municipal · Alaska · EIA 599
Anchorage Municipal Light and Power
Municipal · Alaska. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2020 shows SAIDI 69 minutes/customer.
Reliability verdict
Anchorage Municipal Light and Power shows above-average chronic reliability in 2020: 18 minutes SAIDI excluding major events (69 minutes including them).
- 69 min
- SAIDI 2020
- 0.27
- SAIFI 2020
- 18 min
- SAIDI ex-MED
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: short interruption minutes vs the 911 utility cohort (≤96 min tercile cut).
What short-outage Anchorage Municipal Light and Power filings show
Anchorage Municipal Light and Power is a municipally-owned utility operating in Alaska under EIA identifier 599. Customer count is not reported in the current EIA filing. Municipal ownership means a local board or city council typically oversees this utility, and it is exempt from federal income tax.
In 2020, the average Anchorage Municipal Light and Power customer experienced 68.7 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. Over the same period, SAIFI (outage events per customer) was 0.27, putting the typical customer at roughly 0 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 18.1 minutes; the difference from the headline 68.7 shows how much of the outage total came from weather rather than everyday grid issues.
Only a single year of reliability data is available, so multi-year trend analysis is not yet possible for Anchorage Municipal Light and Power.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
69 minutes per customer per year
Minutes without power per year (2020)
Anchorage Municipal Light and Power vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
69 Among the lowest fewer outage minutes than 76% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
SAIDI 2020 breakdown: 68.7 minutes
Reliability Trend (2020–2020)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 68.7 | 18.1 | 0.271 | 31,159 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Frequently Asked Questions
How reliable is Anchorage Municipal Light and Power?
Anchorage Municipal Light and Power had a SAIDI of 68.7 minutes in 2020 including major weather events, but 18.1 minutes excluding them (the IEEE-standard day-to-day reliability measure, the difference points to a major storm that year rather than an ongoing problem). Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is Anchorage Municipal Light and Power?
Anchorage Municipal Light and Power is classified as a Municipal serving Alaska.
How many customers does Anchorage Municipal Light and Power serve?
Anchorage Municipal Light and Power serves customers in Alaska. Exact customer count data is not available in the current EIA filing.
How has Anchorage Municipal Light and Power's reliability changed over time?
Limited historical data is available for Anchorage Municipal Light and Power. Check the reliability trend table for the most recent figures.
Utility Profile
- Type
- Municipal
- State
- Alaska
- Customers
- -
- EIA ID
- 599
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Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.