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.