SAIDI
121 min per year
Yearly outage minutes, on average (2023)
What This Utility Data Tells You
ALLETE, Inc. is an investor-owned utility operating in Minnesota under EIA identifier 12647. It reports service to approximately 151,679 customer accounts and generated about $0.85 billion in annual electric revenue, with a service footprint spanning 113 ZIP codes. Because it is investor-owned, the state public utility commission oversees its rate cases and reliability performance rather than a local board.
In 2023, the average ALLETE, Inc. customer experienced 120.5 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. Over the same period, SAIFI (outage events per customer) was 1.24, putting the typical customer at roughly 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 103.6 minutes, and the spread against the headline 120.5 indicates how much weather, versus routine infrastructure, drove the outage total.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for ALLETE, Inc., which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that window, SAIDI moved from 179.4 down to 120.5 minutes, a trend worth noting for anyone weighing capital investment outcomes.
SAIFI
1.24 interruptions/yr
Average interruption count (2023)
Customers
151,679
Minnesota service territory
SAIDI vs. National Average (180 min) 30.1%
121 outage minutes per customer annually
Annual minutes without electric service (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 179.4 | 122.5 | 1.420 | 142,937 |
| 2021 | 150.8 | 126.0 | 1.450 | 143,144 |
| 2022 | 496.6 | 112.7 | 2.050 | 143,473 |
| 2023 | 120.5 | 103.6 | 1.240 | 144,144 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
ALLETE, Inc. serves 113 ZIP codes in Minnesota.
5503755072556025560355614556165570155702557045570555707557095571155712557165571755718557205572155722557245573155733557345573655738557445574655749557505575155756557635576455765557675576955771557755577955783557865579555797558025580355804558055580655807558085581055811558125581455816563075631056314563185632956331563365634056344563455634756352563605636456367563735637856379563825638456385563895640156425564315643356434564355643756438564405644156443564445644656449564525645356455564615646456465564665646756468564705647256473564745647556477564785647956481564825648456636
Frequently Asked Questions
How reliable is ALLETE, Inc.?
ALLETE, Inc. had a SAIDI of 120.5 minutes in 2023. Excluding major storm impacts, this tracks roughly with the national average.
What type of utility is ALLETE, Inc.?
ALLETE, Inc. is classified as a IOU serving Minnesota.
How many customers does ALLETE, Inc. serve?
ALLETE, Inc. serves approximately 151,679 customers in Minnesota.
How has ALLETE, Inc.'s reliability changed over time?
ALLETE, 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
- IOU
- State
- Minnesota
- Customers
- 151,679
- Annual Revenue
- $0.85B
- EIA ID
- 12647
Explore
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.