Three formal developments landed on Indiana manufacturers' operating budgets this month: the IURC utility rate investigation into what investor-owned utilities are actually earning, a fuel tax holiday that expires overnight on August 6, and a 210,000-unit hybrid production load arriving at Honda's Greensburg plant. Each carries a date you can put on a calendar. All three hit the same 18-month planning window.

IURC Utility Rate Investigation Opens on ROE and Tracker Mechanisms

On July 15, the Indiana Utility Regulatory Commission released its energy affordability report and opened two formal investigations — one into the return on equity earned by all five Indiana investor-owned utilities, and a second into tracker mechanisms, the riders utilities use to raise rates outside standard rate cases. Both go to an August 7 public hearing.

The number worth your attention: Indiana Michigan Power holds an IURC-authorized ROE of 9.85%. Its actual earned ROE for the twelve months ending March 2026 was 12.6% — nearly a 3-percentage-point over-earning gap embedded in every industrial tariff it files.

Temper the expectation. Proceedings at this stage more often produce reporting requirements or methodology changes than direct rate cuts. Even a lowered authorized ROE only reaches your industrial tariff at the next rate case filing, and other tariff components can offset it. The realistic outcome is directional pressure on the next filing. The August 7 hearing is where the commission sets scope and methodology — which is what determines whether anything reaches your bill at all.

Gary and NIPSCO: Data Center Load Sitting Outside Legacy Cost Recovery

The Gary Common Council and the Citizens Action Coalition are running a parallel fight in northwest Indiana. NIPSCO residential bills at 1,000 kWh rose roughly $83 per month between 2023 and 2025, the steepest jump among Indiana's five investor-owned utilities. CAC Executive Director Kerwin Olson argues NIPSCO's Amazon New Carlisle agreement commits $1 billion in ratepayer credits when equivalent industrial transmission rates would put the figure closer to $3.5 billion. NIPSCO disputes that framing.

What is not disputed: the GenCo structure separates data center load from legacy cost recovery, so that load does not help shoulder costs like coal ash cleanup. Meanwhile, DOE emergency orders keeping NIPSCO coal units running past retirement are generating uplift costs NIPSCO is seeking to recover through MISO, with allocation still being litigated. Pressure is arriving from two directions at once.

Fuel Tax Holiday Expires August 6 With No Renewal Path

Governor Braun's fuel tax holiday — which has held Indiana's average regular unleaded at a nation-low $3.12 per gallon per AAA — expires August 6. That is the fourth and final permissible extension under Indiana Code. Renewal requires explicit General Assembly approval, and no special session has been formalized.

The quoted figure is 61 cents per gallon. The real exposure is larger. The Gasoline Use Tax is a floating 7% rate calculated monthly against a rolling retail average, and Midwest retail gasoline is already elevated on Strait of Hormuz tensions. When the tax returns August 7, it gets calculated against that higher average. Attorney General Todd Rokita already has 30 fuel distributors under price-gouging investigation, which tells you repricing pressure on logistics contracts is already in motion.

Honda Loads Greensburg With 210,000 Hybrid Units by May 2028

Honda Global CEO Toshihiro Mibe told Yomiuri Shimbun on July 18 that Honda is considering an eighth North American plant. Its seven existing plants run at roughly 85% of 1.2 million units of U.S. capacity, against 2025 U.S. sales of 1.43 million.

The nearer story is Greensburg. The 250,000-unit Indiana Auto Plant, employing about 2,700 associates, is confirmed to receive 210,000 Civic Hybrid units annually starting May 2028, relocated from Guanajuato. Honda has committed to more than quadrupling local motor and inverter content — a multi-year sourcing ramp for Indiana Tier 1 and Tier 2 suppliers, but only for suppliers already inside the qualification pipeline before production starts. Honda has not publicly confirmed the hybrid battery sourcing pathway for that ramp. That remains open.

Questions for Your Morning Huddle

Q: Will the IURC utility rate investigation actually lower our industrial power rates?
A: Not directly and not soon. The most likely near-term outcome of the IURC utility rate investigation is reporting requirements or methodology changes, with any authorized ROE reduction only reaching your industrial tariff at the next rate case filing.

Q: What happens to our fuel costs on August 7?
A: The 61-cent-per-gallon tax returns, and because the Gasoline Use Tax floats at 7% of a rolling retail average that is currently elevated, the effective restoration cost will likely exceed 61 cents. Audit freight contracts for fuel surcharge triggers before August 6.

Q: Are we too late to get into Honda's supplier pipeline for the Greensburg hybrid ramp?
A: Sourcing decisions for the May 2028 start are being made now, so the qualification window is open but closing. Call your Honda procurement contact this week to confirm realistic lead time for motor, inverter, or hybrid drivetrain qualification.

Three actions this week: assign someone to formally monitor the August 7 IURC hearing, stress-test your 2027 operating budget against fuel returning above 61 cents, and confirm your Honda qualification status. If you want a structured way to work through utility rate exposure across your facilities, start with the TEG Energy Decision Blueprint.

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