SAIDI
186 min per year
Average outage minutes (2023)
What This Utility Data Tells You
Ketchikan Public Utilities is a municipally-owned utility operating in Alaska under EIA identifier 10210. It reports service to approximately 7,949 customer accounts and generated about $0.02 billion in annual electric revenue, with a service footprint spanning 2 ZIP codes. As a municipal utility, it is typically governed by a local board or city council and is exempt from federal income tax.
In 2023, the average Ketchikan Public Utilities customer experienced 185.5 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. SAIFI — the average number of outage events per customer — was 3.20 for the same period, so customers statistically faced roughly 3 distinct interruptions that year.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Ketchikan Public Utilities, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 566.5 to 185.5 minutes over that window — a meaningful direction for prospective customers and regulators watching capital investment outcomes. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.
SAIFI
3.20 interruptions/yr
Outage frequency (2023)
Customers
7,949
Served in Alaska
SAIDI vs. National Average (180 min) 46.4%
186 minutes per customer per year
Minutes without power per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 566.5 | — | 5.300 | — |
| 2021 | 361.3 | — | 5.600 | — |
| 2022 | 202.6 | — | 3.800 | — |
| 2023 | 185.5 | — | 3.200 | — |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Ketchikan Public Utilities serves 2 ZIP codes in Alaska.
9990199928
Frequently Asked Questions
How reliable is Ketchikan Public Utilities?
Ketchikan Public Utilities had a SAIDI of 185.5 minutes in 2023, meaning the average customer experienced about 186 minutes of outages that year. This is near the national average.
What type of utility is Ketchikan Public Utilities?
Ketchikan Public Utilities is classified as a Municipal serving Alaska. Municipal utilities are owned and operated by local governments.
What does SAIDI mean for Ketchikan Public Utilities?
SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Ketchikan Public Utilities experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Ketchikan Public Utilities's SAIDI to that benchmark shows whether this utility is above or below average.
How many customers does Ketchikan Public Utilities serve?
Ketchikan Public Utilities serves approximately 7,949 customers in Alaska. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
How has Ketchikan Public Utilities's reliability changed over time?
Ketchikan Public Utilities has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.
What is SAIDI without major event days?
SAIDI "without major event days" (SAIDI nMED) excludes outages caused by hurricanes, ice storms, and other catastrophic weather events. It better reflects day-to-day infrastructure reliability rather than vulnerability to extreme weather. Both standard SAIDI and SAIDI nMED are shown in the reliability trend table above.
Utility Profile
- Type
- Municipal
- State
- Alaska
- Customers
- 7,949
- Annual Revenue
- $0.02B
- EIA ID
- 10210
Related Data
Guides
Data Source: U.S. Energy Information Administration Form 861 annual electric power industry survey. ZIP service territory from OpenEI.
Related
Data sourced from official EIA reliability statistics and OpenEI utility rate database. See our methodology for details. Retrieved and formatted by PlainUtility Editorial
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Energy Information Administration (EIA) Form 861. Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.