Bosch Finalizes $225 Million CHIPS Award for $2 Billion Roseville Silicon-Carbide Fab
- News Power Electronics SiC & GaN Power Semiconductors
Marin Holt
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- 5 minutes read
- CHIPS direct funding: $225 million
- Total Roseville investment: $2 billion
- Wafer size: 200-millimeter
- First commercial SiC chips: 2026
- California tax credit: $25 million
Bosch finalized a definitive agreement with the U.S. Department of Commerce on July 13, 2026 for up to $225 million in direct funding under the CHIPS Program, backing a $2 billion transformation of its Roseville, California site into a silicon-carbide (SiC) semiconductor plant. California added a $25 million California Competes tax credit. Sample production is already underway, and Bosch expects to produce its first commercial 200-millimeter SiC chips at the site in 2026.
The Roseville fab anchors a broader U.S. push: Bosch has committed up to $7.5 billion to its American operations through 2031. The company acquired the former Roseville wafer fab in August 2023 and is retooling it for 200-millimeter wafers, the format the industry treats as the volume-and-cost benchmark for SiC. More than 300 associates work at the site today.
The award lands as U.S. demand for power semiconductors climbs with electric-vehicle production, utility-scale storage, and AI data-center buildout, all of which lean on SiC to move power more efficiently. The direct-funding agreement converts an earlier preliminary commitment into a binding award, releasing federal money as Bosch hits construction and hiring milestones.
Why It Matters
Silicon carbide is the switching backbone of modern power electronics; it handles higher voltages and temperatures with lower switching losses than plain silicon, which is why it dominates 800-volt EV drivetrains, DC fast chargers, and grid-forming inverters. Almost all SiC device supply today routes through a handful of fabs, several of them overseas. A domestic 200-millimeter line at commercial scale gives U.S. automakers, charger builders, and grid-equipment makers a home-shored source for the chips that convert and control their power. Bosch frames the same devices as serving battery-electric and plug-in hybrid vehicles alongside industrial and data-center power conversion.
Commercial output on 200-millimeter wafers in 2026 would mark roughly three years from acquisition to production. Bosch has not disclosed the fab’s targeted wafer-per-month capacity or the share of U.S. SiC supply it expects to hold.
Critical Perspective
The $225 million CHIPS grant funds less than a ninth of Bosch’s $2 billion Roseville project, and the company has disclosed neither the fab’s wafer-per-month capacity nor the share of domestic SiC supply it expects to hold. Bosch still promises its first commercial 200-millimeter chips in 2026, an aggressive target for a wafer format that even dedicated specialists have struggled to yield at volume. Wolfspeed opened its Mohawk Valley plant in New York as the industry’s first large 200-millimeter silicon-carbide fab, then filed for Chapter 11 bankruptcy in 2025 as electric-vehicle chip demand softened and yields lagged. If a pure-play leader could not make 200-millimeter silicon carbide pay, what makes a $2 billion retrofit backed by $225 million in federal money a safer bet against the same softening market?
Sources
- Bosch / GlobeNewswire: $225 million CHIPS direct-funding agreement (July 13, 2026)
- Interesting Engineering: Bosch begins 200 mm SiC chip production at first US plant
- Design & Development Today: Bosch Awarded $225M in CHIPS Funds
- City of Roseville: Bosch $225 million funding / $2 billion investment
