IOU · Minnesota · EIA 14232
Otter Tail Power Co
IOU · Minnesota · 63K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 96 minutes/customer.
Reliability verdict
Otter Tail Power Co shows above-average chronic reliability in 2023: 96 minutes SAIDI excluding major events across 63K customers.
- 96 min
- SAIDI 2023
- 1.38
- SAIFI 2023
- 96 min
- SAIDI ex-MED
- 63K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.
What mid-pack Otter Tail Power Co filings show
Otter Tail Power Co is an investor-owned utility operating in Minnesota under EIA identifier 14232. It reports service to approximately 63,220 customer accounts and generated about $0.22 billion in annual electric revenue, with a service footprint spanning 420 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 Otter Tail Power Co customer experienced 96.3 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. The SAIFI figure, which tracks average outage events per customer, came in at 1.38 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 96.3 minutes; the difference from the headline 96.3 shows how much of the outage total came from weather rather than everyday grid issues.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Otter Tail Power Co, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI dropped from 107.7 to 96.3 minutes across that span, a direction regulators and prospective customers tend to watch closely.
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.
96 min/year per customer
Power-out minutes per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Otter Tail Power Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Otter Tail Power Co SAIDI trend
Otter Tail Power Co vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
96 Lower than most fewer outage minutes than 67% 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
Price vs. reliability
Where Otter Tail Power Co sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Otter Tail Power Co charges more per customer than 88% of them, and is more reliable (lower SAIDI) than 70% of them, placing it in the quadrant where it pays more and is more reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $3,551/year · Latest SAIDI: 96.3 minutes/year.
SAIDI 2023 breakdown: 96.3 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 107.7 | 107.7 | 1.400 | 63,290 |
| 2021 | 83.1 | 65.8 | 1.040 | 63,290 |
| 2022 | 235.0 | 119.8 | 2.000 | 63,290 |
| 2023 | 96.3 | 96.3 | 1.380 | 63,290 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Otter Tail Power Co serves 420 ZIP codes in Minnesota.
Frequently Asked Questions
How reliable is Otter Tail Power Co?
Otter Tail Power Co had a SAIDI of 96.3 minutes in 2023. Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is Otter Tail Power Co?
Otter Tail Power Co is classified as a IOU serving Minnesota.
How many customers does Otter Tail Power Co serve?
Otter Tail Power Co serves approximately 63,220 customers in Minnesota.
How has Otter Tail Power Co's reliability changed over time?
Otter Tail Power Co 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
- 63,220
- Annual Revenue
- $0.22B
- EIA ID
- 14232
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Otter Tail Power Co. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (63K here), outside Minnesota.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (96.3 here), outside Minnesota, excluding the customer-peer set.
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.