Indiana Michigan Power Co

What This Utility Data Tells You

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.