Two consumer advocates have filed formal notices of intent to appeal the IURC's approval of GenCo — the first data-center-only utility in the country — which puts the cost allocation behind Northwest Indiana's largest load addition back into open litigation and keeps the NIPSCO rate increase question unsettled for every operator in that territory. Alongside it, two Indiana manufacturing announcements in Marshall and Clark counties, and a national engine buildout with Caterpillar's Lafayette plant near the center of it.

Here is what to track today.

Appeal of Indiana's Data-Center-Only Utility Reopens the NIPSCO Rate Increase Question

The IURC approved GenCo, a NIPSCO subsidiary supplying electricity exclusively to hyperscale data centers in Northwest Indiana. Amazon Web Services anchors it with an $11 billion, 2.4-gigawatt campus in New Carlisle; Blackstone Infrastructure Partners holds a 19.9% stake acquired for $1.5 billion; a second agreement with Alphabet is confirmed, and GenCo is in discussions to supply up to 3 additional gigawatts.

What did not make the headline: the Citizens Action Coalition of Indiana and Indiana's own Office of Utility Consumer Counselor have both filed notices of intent to appeal the September 2025 approval. If the appeal succeeds, Amazon's January 1, 2027 contractual power delivery date carries real financing and construction delay exposure. Amazon also holds an opt-out allowing it to cut 1,200 megawatts as late as March 2029 — which conflicts with a February 2025 IURC tariff order requiring data centers to give five years' notice before reducing demand more than 20%. That gap has not been publicly reconciled.

Meanwhile NIPSCO's 500,000 residential customers have absorbed $77 per month in increases since July 2023, and the Citizens Action Coalition projects average single-family bills going from $136.53 to $171.27 by March 2026 — a 25.45% increase before new gas generation comes online. Watch the Indiana Court of Appeals docket. The first substantive hearing date sets the timeline for everything downstream, including how much of the interconnection and generation cost base eventually lands in C&I rate design.

Marshall and Clark County Announcements Point Toward Advanced Manufacturing Demand

In Walkerton, Polygon Co. announced a $4 million expansion of medical manufacturing at its Industrial Park Drive facility, targeting surgical robotics and minimally invasive device demand. Polygon already produces more than 1.3 million precision medical components annually for Medtronic, Baxter, Coloplast, and Apyx Medical. The expansion adds 35 jobs over five years at wages roughly 9% above the South Bend-area average and grows medical from about 20% of revenue to roughly 30%.

Watch the revenue rebalancing more closely than the capex figure. Polygon is deliberately pulling capacity toward medical and away from an industrial book that includes CNH Industrial, Caterpillar, and Honeywell. If you source composite tubing or precision components from Polygon for industrial applications, have a conversation with your rep about allocation. The $4 million may or may not fully offset the mix shift.

In Jeffersonville, CS PowerTech — a U.S. subsidiary of Canadian Solar — opened Phase I of a 750,000-square-foot HJT solar cell plant at River Ridge Commerce Center. At full capacity the plant produces more than 6 gigawatts of cells annually, represents nearly $1 billion in local investment, and supports more than 1,200 jobs. At $0.04 per watt under IRA Section 45X, that run rate generates up to $240 million per year in transferable production tax credits — a core pillar of the financial model, not a side benefit. Phase II is targeted before year-end 2026. Watch whether utility interconnection capacity at River Ridge keeps pace. That is a common bottleneck at hyperscale industrial parks.

Engine Plant Buildout Compresses Backup Generation Lead Times

Industrial Info Resources reports at least $1.4 billion in current and future U.S. engine plant expansions driven by data center backup and baseload demand — against $322.5 billion in U.S. data center construction underway and $4.3 trillion in planning or engineering. Caterpillar broke ground in 2024 on a 325,000-square-foot expansion at its Lafayette Large Engine Center, reaching $725 million in total project value once equipment is installed, the largest investment at that facility since 1982.

Cummins is citing 18-month lead times on high-horsepower units. INNIO booked $3.9 billion in equipment orders in the first half of 2026 alone, exceeding its full-year 2025 intake. The regulatory stress test to watch is Amazon's permit application in Richmond County, North Carolina for 588 permanent and 57 temporary diesel generators at a single campus; that hearing drew more than 200 attendees on July 30. If similar cumulative-emissions objections gain traction in other permitting jurisdictions, some backup generation demand could shift from diesel toward natural gas. One hearing is not a trend yet. But if backup generation equipment is on your capital plan, the supply queue compression data center developers are experiencing is already your queue.

Lilly and Resilience Signal a Multi-Year Squeeze on Indiana Technical Labor

Indianapolis-headquartered Eli Lilly and contract manufacturer Resilience announced a $750 million joint investment on July 30 to add KwikPen injectable device production near Cincinnati, Ohio, creating at least 400 high-skilled jobs with full operations expected in early 2027. This runs parallel to Lilly's $4.5 billion, two-site Indiana expansion announced in May 2026.

The structural driver is Novo Nordisk's $11 billion acquisition of three former Catalent fill-finish sites — one of them in Bloomington — which pulled sterile injectable capacity off the open market just as GLP-1 demand accelerated. For Indiana operators, the indicator is labor. The same demand wave filling Resilience's Ohio campus is driving Lilly's Indiana buildout, and Indiana's sterile manufacturing, device assembly, and cGMP-trained technician pool is entering a multi-year demand surge that will pressure wages and training pipelines statewide.

Questions for Your Morning Huddle

Q: How could the GenCo appeal affect my NIPSCO bill?
A: The appeal does not change your current rate, but it reopens how the cost of serving data center load gets allocated across customer classes. Citizens Action Coalition projects average single-family bills rising from $136.53 to $171.27 by March 2026, and C&I rate design moves through the same set of proceedings.

Q: Should I be pulling forward backup generation purchases?
A: If a generator is on your capital plan, get pricing and lead times now — Cummins is quoting 18 months on high-horsepower units and INNIO booked $3.9 billion in orders in the first half of 2026 alone. You are competing for build slots in the same queue as data center developers.

Q: What should I ask Polygon if they are one of my suppliers?
A: Ask your rep how the $4 million medical expansion changes your allocation and lead times, since medical is moving from roughly 20% to 30% of Polygon's revenue. The industrial book that includes CNH Industrial, Caterpillar, and Honeywell is the side being rebalanced away from.

Where This Leaves You

Data centers are reshaping Indiana's power grid through GenCo, its engine manufacturing sector through Caterpillar Lafayette, and its land-use and interconnection competition through River Ridge — while surgical robotics and GLP-1 pharma demand open a supply chain door that closes fast for operators without medical-grade certification and cleanroom capability.

If you are running backup generation or evaluating on-site generation as a hedge against NIPSCO rate increases, read our breakdown of utility standby charges for on-site generation before you sign anything. For the line item that usually absorbs the largest share of a rate increase, start with our explainer on demand charges for commercial and industrial facilities. We covered the interconnection and critical-infrastructure side of Indiana's data center buildout in Indiana data center power risk in Sullivan County.

To pressure-test your own exposure across procurement, demand, and on-site generation, start with the TEG Energy Decision Blueprint.

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