PCIM 2026: Why Western carmakers cannot have 'China-free' SiC at subsidized prices

Western automakers’ expectation of subsidized, China-free SiC is colliding with hard realities. Technically, China controls over 60% of global SiC substrate capacity and is closing the gap in 8-inch wafer yields; severing ties would force a costly retreat to 6-inch platforms, undermining EV efficiency. Compliance-wise, while the U.S. IRA and EU Net-Zero Industry Act offer local manufacturing incentives, extended equipment lead times and talent shortages inflate real costs far beyond projections. Strategically, STMicroelectronics’ joint venture with Sanan Optoelectronics may set a new template—nominally ‘local packaging’ but reliant on upstream materials from mainland China and Taiwan, China. Over the next 12–24 months, the SiC market will bifurcate: a subsidy-driven track for politically compliant premium vehicles, and a cost-driven track for mass adoption. The true winners won’t be those shouting ‘decoupling,’ but those embedding compliant buffer layers within China’s ecosystem.