I&M's $59M Rate Filing: The Residential Freeze Doesn't Cover What C&I Customers Owe

Indiana Michigan Power filed with the IURC on August 26th, proposing a $59 million reduction in 2027 customer bills across its 24-county northern and east-central Indiana service territory. I&M's president and COO Maryam S. Brown credited load growth revenue from Amazon Web Services' $11 billion campus near New Carlisle, Google's $2 billion Fort Wayne facility, and Microsoft's $1 billion LaPorte data center as what made this filing possible.

Residential customers get a 5% base-rate cut and a three-year freeze. Commercial customers get 2%.

Here is the structural detail that is not getting covered. Incremental revenue from hyperscaler load is being credited against the residential and small-commercial revenue requirement, whether that constitutes a genuine cross-subsidy or simply a load-factor benefit is exactly what intervenors will litigate at the IURC. What is not in dispute is this: commercial and industrial customers remain fully exposed to PJM capacity market pass-through charges that the residential rate freeze explicitly does not touch.

PJM capacity prices have cleared at multiples of prior auctions in recent cycles. Those pass-throughs flow directly to commercial and industrial customers. A rate cut on the base rate does not offset a capacity charge surge: these are separate line items, and the rate filing does not address the latter.

The filing also includes what I&M calls a Benefits Bank mechanism. Our read is that it functions as a smoothing reserve if hyperscaler load ramps slower than forecast, but the filing language on how it is funded and drawn down is worth reading directly before you assume that is its only purpose.

The IURC decision is expected in June 2027. If your facility is in I&M's territory, model your 2027 all-in power cost against both the proposed rate cut and the PJM exposure before you assume this filing helps your bottom line.