SAIDI
189 min per year
Average outage minutes (2023)
What This Utility Data Tells You
Chugach Electric Assn Inc is a member-owned electric cooperative operating in Alaska under EIA identifier 3522. It reports service to approximately 113,253 customer accounts and generated about $0.33 billion in annual electric revenue, with a service footprint spanning 30 ZIP codes. Being member-owned, this cooperative answers to its ratepayers rather than outside shareholders, a structure that tends to influence how rate cases and capital spending get decided.
In 2023, the average Chugach Electric Assn Inc customer experienced 189.1 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. Over the same period, SAIFI (outage events per customer) was 1.50, putting the typical customer at roughly 2 distinct interruptions that year.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Chugach Electric Assn Inc, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that span, SAIDI rose from 113.0 to 189.1 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.
SAIFI
1.50 interruptions/yr
Events per customer (2023)
Customers
113,253
Customers across Alaska
SAIDI vs. National Average (180 min) 47.3%
189 outage minutes per customer annually
Minutes without power per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 113.0 | - | 0.860 | 89,624 |
| 2021 | 142.1 | - | 1.060 | - |
| 2022 | 150.8 | - | 1.200 | - |
| 2023 | 189.1 | - | 1.500 | - |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Chugach Electric Assn Inc serves 30 ZIP codes in Alaska.
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Frequently Asked Questions
How reliable is Chugach Electric Assn Inc?
Chugach Electric Assn Inc had a SAIDI of 189.1 minutes in 2023. Excluding major weather events, this is near the national average.
What type of utility is Chugach Electric Assn Inc?
Chugach Electric Assn Inc is classified as a Cooperative serving Alaska.
How many customers does Chugach Electric Assn Inc serve?
Chugach Electric Assn Inc serves approximately 113,253 customers in Alaska.
How has Chugach Electric Assn Inc's reliability changed over time?
Chugach Electric Assn Inc has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Cooperative
- State
- Alaska
- Customers
- 113,253
- Annual Revenue
- $0.33B
- EIA ID
- 3522
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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.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.