May 18, 2026 · Clark
ITC Quartz Tariff Ruling and Canadian Solar's 45X Question Put Indiana Supply Chains on the Clock
The ITC quartz tariff remedy landed May 18th and Canadian Solar's 45X credit is still unresolved. Here's what Indiana operators need to act on today.
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.
01National
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.
02Clark
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.
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.
This brief
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