SK Siltron CSS Bay City SiC wafer plant
Bay City, MI. Materials.
SK Siltron CSS, headquartered in Auburn, MI
Bay City SiC wafer expansion (DOE loan project)
SK Siltron CSS planned a $302 million SiC wafer plant in Monitor Township, MI with a $544 million DOE loan commitment; in July 2026 it announced it will wind down the site.
- Investment
- $302M
- Jobs
- 150
- Announced
- not stated
- Target
- not stated
- Type
- Materials
- Process or product
- SiC wafers for power electronics
- Wafer size
- not stated
- CHIPS Act funding
- none on record
Timeline
- Cancellation
Officials announced the Bay County plant will wind down over about 60 days, citing EV market changes; about 140 employees affected.
Michigan Public - Funding
DOE announced a loan of $481.5 million principal ($544 million including capitalized interest) to SK Siltron CSS.
electrive
Sources (4)
- Touted as a game changer by former President Joe Biden, Michigan silicon chip manufacturer closing Michigan Public, Jul 16, 2026
- US DOE announces $481.5 million loan for semiconductor material manufacturing electrive, Nov 13, 2024
- Whitmer announces $302 million SK Siltron expansion into Bay County ABC12
- EV bet bust: SK Siltron pulls plug on Bay County plant, 140 jobs on the line Hoodline
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Figures are what the company or an agency announced. "Not stated" means no source gives a number for this site. A status is only as current as its "as of" date.