Two federal decisions are landing right now—one at the International Trade Commission on the ITC quartz tariff for engineered quartz surfaces, one at U.S. Treasury on solar manufacturing tax credit eligibility—and both carry direct cost and supply chain consequences for Indiana operators. The ITC's Section 201 remedy report was due May 18th. In Clark County, a 1,200-job Canadian Solar facility is roughly two months from commercial launch with its primary subsidy stream still legally unresolved. If either of these touches your operation or your suppliers, the window to get positioned ahead of the rulings is closing.

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ITC Section 201 Quartz Tariff: Indiana Fabricators Need to Audit Their Supplier Mix Now

The Quartz Manufacturing Alliance of America—a coalition including Minnesota-based Cambria, DalTile (a Mohawk Industries subsidiary), and other domestic producers—has petitioned the ITC under Section 201 of U.S. trade law for a 50% global safeguard tariff on all engineered quartz surface imports, regardless of country of origin.

Here's what makes Section 201 different from the AD/CVD orders you've seen before: it requires no finding of unfair trade practices from any specific country. It targets every import source simultaneously. Prior AD/CVD orders on Chinese, Indian, and Turkish quartz were imposed in 2019 and renewed just last December—and they didn't stop the import surge. Buyers rerouted through Vietnam and Thailand. The market was already running the same play again.

By January 2026, engineered quartz imports had collapsed 61% year over year. Brazilian quartzite—a natural stone product in an adjacent but distinct category—surged nearly 100% over the same month a year earlier, hitting $57 million. That pattern is consistent with buyers prepositioning toward natural stone alternatives ahead of the ruling, though some of that surge likely reflects inventory front-running rather than permanent sourcing shifts.

Natural stone alternatives sit entirely outside whatever tariff the president ultimately imposes. The president has full discretion to adopt, modify, or reject the ITC's proposed remedy—and whatever he decides sets the imposition timeline. If your supplier mix includes engineered quartz—residential construction, kitchen and bath fabrication, countertop supply chains—the time to audit that exposure is today.

Canadian Solar Jeffersonville: The 45X Credit Eligibility Question Is Still Open

The Canadian Solar plant in Clark County entered trial production earlier this year. Commercial operation is targeted in approximately two months. Phase one carries 2.1 gigawatts peak of solar cell capacity; phase two, planned for 2027, adds another 4.2 gigawatts—bringing total planned capacity to 6.3 gigawatts peak at an $800 million investment. Committed jobs stand at approximately 1,200, including 150 engineers.

What sets this facility apart from every other China-linked U.S. solar operation—Jinko Solar, Longi, Trina, JA Solar have all built U.S. plants—is that those others stopped at module assembly. Canadian Solar is manufacturing solar cells, the upstream component that determines domestic content compliance and 45X advanced manufacturing credit eligibility. At four cents per watt and full nameplate utilization, phase one alone could generate up to $84 million annually in 45X production credits. That is the ceiling, not a year-one number, and it is not confirmed.

Two unresolved variables compress that number significantly. First, FEOC restrictions under the One Big Beautiful Bill Act go beyond equity ownership—they extend to licensing arrangements, debt, board control, and effective control. Treasury has not yet issued the implementation guidance that would tell Canadian Solar whether its specific corporate structure clears those tests. Eligibility for the 45X credits at Jeffersonville is legally unresolved. Second, the plant is designed to be fed by wafers from Canadian Solar's Thailand operations. Those operations were swept into Commerce's 2023 anti-circumvention determination on Southeast Asian solar producers, and Thailand currently faces reciprocal tariffs quoted as high as 36% this spring—a rate that has been a moving target. That input cost exposure is the vulnerability buried in the earnings call, and it could erode the margin advantage the company is publicly citing as its investment thesis.

If you supply services, utilities, or components to this facility in Clark County, the FEOC guidance from Treasury is the single most material financial variable in that plant's business case. It has not been resolved.

Questions for Your Morning Huddle

Q: Should Indiana fabricators audit their engineered quartz supplier exposure before the ITC tariff ruling takes effect? A: Yes. If your supply chain includes engineered quartz surfaces, the time to identify pre-qualified secondary fabricators and assess natural stone alternatives is before the ruling drops—not after. The president can act quickly once the ITC remedy report is in hand, and natural stone sits entirely outside any tariff that gets imposed.

Q: What does the unresolved 45X credit eligibility mean for businesses supplying the Canadian Solar Jeffersonville plant? A: It means the plant's financial durability is not yet confirmed. If Treasury's FEOC guidance disqualifies the facility, or if wafer tariffs from Thailand compress input margins significantly, the business case for full-capacity operation changes—and so does the stability of any commercial relationship built on that assumption.

Q: How are the ITC quartz tariff decision and the Canadian Solar 45X question connected for Indiana operators? A: They're the same underlying risk: Indiana facilities and supply chains being built right now are only as durable as the federal policy decisions being made this week. Operators who've mapped their specific exposure before the rulings land will be the ones who can actually move when they do. Knowing the policy mechanism without that prep work in place doesn't help.

Watch this TEG Daily on YouTube for the full breakdown of both federal decisions and what they mean for Indiana operators.