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Indiana Michigan Power (I&M) Rates

Pending cases for Indiana Michigan Power (I&M) include the utility's:

Base rates cover most infrastructure and operating/maintenance costs while rate adjustment “trackers,” as described below, allow for more frequent rate changes for specific costs as designated by law. The trackers were re-set when I&M's current base rates were approved in March 2020 and are still subject to adjustments every six or 12 months.

In the 2024 IURC survey of residential electric utility bills, I&M's typical bill ranked third-highest among the 10 electric utilities under the IURC’s jurisdiction.

Base Rates

I&M's current base rates were approved in May 2024, with previous base rate cases concluding in February 2022,  March 2020, and May 2018.

Trackers

In addition to base rates, Indiana electric utilities recover and credit separate, specific costs through rate adjustment mechanisms known as "trackers." I&M's rate adjustments via trackers are reviewed by the OUCC and approved by the IURC on a semi-annual or annual basis.

I&M's authorized trackers make up about 17.4% of a residential customer's typical electric bill as of September 2024.

I&M uses the following trackers. All filings are available by entering the cause number in the IURC's Online Services Portal.

TrackerRecovers Costs forFrequencyIURC Cause No.
Fuel Adjustment Clause (FAC)Coal, nuclear and other fuel costsSemi-Annual38702
Environmental Cost Recovery (ECR)Emissions control equipment (including operations & maintenance)Annual44331, 44523, 43992
Demand Side Management (DSM)Energy efficiency programsAnnual43827
Off-System Sales (OSS)Power sales to the wholesale marketAnnual43775
PJM Interconnection (PJM)Regional transmission costsAnnual43774
Life Cycle Management (LCM)Construction costs for pre-approved Cook nuclear plant projectsAnnual44182
Resource Adequacy Rider (RAR)Purchased power capacity cost changesAnnual 
Phase-In Rate Adjustment (PRA)Phase-in of new base ratesAnnual 
Solar Power Rider (SPR)Renewable energy projectsAnnual44511
Green RiderVoluntary renewable energy program  

Previous I&M cases before the IURC include:

2-25-2025