Four developments in Indiana's utility rate cases this week carry direct consequences for manufacturers' power costs and operational planning — and each one is moving on a timeline that won't wait for your next budget cycle.
Governor Braun replaced IURC Chairman Andy Zay with Commissioner Anthony Swinger on June 23, citing the commission's 3-1 vote approving a $71 million annual rate increase for AES Indiana as "unacceptable." Swinger spent 25 years at the Indiana Office of Utility Consumer Counselor — the agency that recommended a $21 million rate reduction in that same proceeding and received over 7,000 consumer comments opposing the increase.
The structural problem: Swinger is recused from voting on the AES rehearing and from the Duke rate case because of his prior OUCC involvement in both. The commissioner most likely to rule in ratepayers' favor cannot vote on either case that prompted his appointment. The OUCC must file its AES reconsideration petition by July 7. Citizens Action Coalition Executive Director Kerwin Olson was direct: durable rate relief requires statutory changes, which means the 2027 legislative session is the real fight. If you're not engaging your legislators now, you're already behind that window.
OUCC Abby Gray filed a formal appeal in IURC Cause No. 46038 on June 4 alleging Duke Energy Indiana over-collected more than $89 million from approximately 890,000 customers across 69 of Indiana's 92 counties. The IURC's written rate order stated $396 million in authorized annual revenue increases; the figure the commission actually approved was $295.7 million. A footnote called those figures "subject to refinement." Duke's position is that the footnote covers a standard true-up for capital costs that came in higher than initial estimates. OUCC's position: Duke used that footnote to collect near the rejected $396 million rather than the $295.7 million actually authorized. Indiana's large industrial ratepayer coalition has joined the appeal seeking an $86.5 million Step 2 rate reduction plus refunds with interest.
The structural risk is larger than the dollars. If that "refinement" interpretation holds, two presiding officers — not the full five-member commission — can effectively expand authorized utility revenue without a full commission vote. Every Indiana utility could use that precedent in future rate cases. Also worth noting: new Chairman Swinger is recused from this case too, which means Andy Zay will vote on the appeal of his own May 27 docket entry.
Energy Secretary Chris Wright issued a second renewal of the Section 202(c) emergency order on June 19, requiring NIPSCO to keep its R.M. Schahfer Generating Station in Wheatfield operating through September 19. Coal units 17 and 18 are both offline for significant turbine and boiler repairs. Representative Frank Mrvan cited NIPSCO's own estimate of $11.5 million in losses to maintain the station while those repairs continue.
The harder issue is the construction sequencing conflict at that same site. NiSource has a contractual obligation to begin delivering power to the $7 billion AWS campus on January 1, 2027. If rolling 90-day DOE extensions push past that deadline, Amazon reportedly retains an option to reduce contracted capacity — reported in the range of 1,200 MW, with an exercise window into early 2029. If those terms are accurate and that reduction materializes, it removes the primary economic anchor for Northwest Indiana's long-term industrial power cost trajectory. Watch September 19.
Indiana's May unemployment came in at 3.3% statewide with 1,800 new construction jobs added in a single month — traceable to Meta's Lebanon campus, Eli Lilly's expansions, and GM-Samsung SDI battery plant construction. Large industrial construction projects historically convert to permanent manufacturing headcount roughly 18 to 36 months after peak construction, which puts real hiring pressure in the 2027 to 2028 window. Howard County sits at 4.8% unemployment — the highest in the state and inside Kokomo's Stellantis corridor. Whether that reflects EV transition disruption, layoffs, or a structural skills gap is worth a direct question to your local workforce board before that wave arrives.
Q: What should Duke Energy Indiana customers do about the $89M overcharge appeal?
A: Get someone tracking the hearing schedule on IURC Cause No. 46038. If OUCC's position prevails, Duke customers in the 69-county territory may be owed refunds with interest — and the outcome will set a precedent for how Indiana utility rate orders are interpreted and enforced going forward.
Q: What does the NIPSCO Schahfer coal plant extension mean for Northwest Indiana power costs?
A: NIPSCO is spending capital maintaining units that aren't running while facing a hard January 1, 2027 Amazon power delivery deadline. If that deadline slips and Amazon exercises a reported capacity reduction option, the long-term cost trajectory for industrial power in Northwest Indiana changes materially. Build a contingency scenario before September 19.
Q: When should Indiana manufacturers engage legislators on IURC reform?
A: Now. The Citizens Action Coalition has stated explicitly that durable rate relief for Indiana manufacturers requires statutory changes at the Indiana General Assembly. Legislators' 2027 session priorities take shape before the session opens — waiting until January puts you outside the window where manufacturer input actually moves the agenda.
If you're in Duke's territory or NIPSCO's service area and haven't audited your rate exposure, that audit should be on your desk before the OUCC's July 7 AES filing resets the docket clock. For a deeper look at how Indiana utility rate structures affect your facility's electricity costs, read our guide to understanding Indiana utility rate cases — and download the TEG Energy Decision Blueprint at TacticalEnergyGroup.com.