AES Indiana $71M Rate Rehearing: What the Reconstituted IURC Means for Your 2027 Cost Model

The AES Indiana rate story keeps developing. The IURC's June vote to approve a $71 million annual rate increase triggered a chain reaction: Commissioner Veleta resigned, Governor Braun fired former Chair Andy Zay, and Braun appointed Joshua Bain to the commission. Bain, as an Indianapolis City-County Council member, co-sponsored a resolution last October explicitly urging AES to withdraw its rate request. The Office of Utility Consumer Counselor and Citizens Action Coalition both filed rehearing petitions. The IURC voted to reopen the case. A preliminary hearing is set for September 17.

Here is the exposure most operators have not modeled. Zay's active lawsuit argued Bain should be barred from exercising commissioner powers until the litigation concluded. A Marion County court had not resolved that before Bain issued a concurring opinion in the case. If Zay's for-cause removal challenge succeeds, every order the reconstituted commission issues in this rehearing (including any rate rollback) is subject to collateral challenge. The January 2027 phase-two increase, roughly $54 million annualized, could hold, be rolled back, or be subject to that collateral challenge.

Model both the full phase-two increase and a partial rollback scenario before September 17 narrows the range. If you serve the Indianapolis area and have not stress-tested either outcome in your 2027 energy cost forecast, that hearing is your deadline.

For deeper context on how Indiana utility tracker charges are being scrutinized right now, the IURC investigation into Indiana utility tracker charges and the AES Indiana rate rehearing filing cover the regulatory sequence that brought us here.