IOU · Indiana · EIA 9324
Indiana Michigan Power Co
IOU · Indiana · 479K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 155 minutes/customer.
Reliability verdict
Indiana Michigan Power Co shows above-average chronic reliability in 2023: 95 minutes SAIDI excluding major events across 479K customers.
- 155 min
- SAIDI 2023
- 0.85
- SAIFI 2023
- 95 min
- SAIDI ex-MED
- 479K
- 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 Indiana Michigan Power Co filings show
Indiana Michigan Power Co is an investor-owned utility operating in Indiana under EIA identifier 9324. It reports service to approximately 478,944 customer accounts and generated about $1.64 billion in annual electric revenue, with a service footprint spanning 210 ZIP codes. Investor ownership puts this utility under the regulatory authority of the state public utility commission, which reviews its rate requests and reliability record.
In 2023, the average Indiana Michigan Power Co customer experienced 155.1 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. SAIFI, the average number of outage events per customer, was 0.85 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 94.6 minutes, and the spread against the headline 155.1 indicates how much weather, versus routine infrastructure, drove the outage total.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Indiana Michigan Power Co, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI dropped from 300.3 to 155.1 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.
155 minutes per customer per year
Power-out minutes per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Indiana Michigan Power Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Indiana Michigan Power Co SAIDI trend
Indiana Michigan Power Co vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
155 Lower than most fewer outage minutes than 52% 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 Indiana Michigan 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, Indiana Michigan Power Co charges more per customer than 86% of them, and is more reliable (lower SAIDI) than 56% 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: $3,415/year · Latest SAIDI: 155.1 minutes/year.
SAIDI 2023 breakdown: 155.1 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 300.3 | 154.1 | 1.119 | 469,531 |
| 2021 | 426.2 | 148.4 | 1.128 | 473,179 |
| 2022 | 389.3 | 120.7 | 1.048 | 475,721 |
| 2023 | 155.1 | 94.6 | 0.848 | 478,396 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Indiana Michigan Power Co serves 210 ZIP codes in Indiana.
Frequently Asked Questions
How reliable is Indiana Michigan Power Co?
Indiana Michigan Power Co had a SAIDI of 155.1 minutes in 2023. Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.
What type of utility is Indiana Michigan Power Co?
Indiana Michigan Power Co is classified as a IOU serving Indiana.
How many customers does Indiana Michigan Power Co serve?
Indiana Michigan Power Co serves approximately 478,944 customers in Indiana.
How has Indiana Michigan Power Co's reliability changed over time?
Indiana Michigan 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
- Indiana
- Customers
- 478,944
- Annual Revenue
- $1.64B
- EIA ID
- 9324
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Indiana Michigan 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 (479K here), outside Indiana.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (155.1 here), outside Indiana, 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.