SK Siltron is pulling the plug on its Monitor Township facility near Bay City, Michigan, winding down production over roughly 60 days and leaving about 140 workers without jobs. The plant had been touted as a key domestic source of silicon carbide (SiC) wafers for electric vehicle power electronics, but county officials are now pivoting to finding a new tenant and scrambling to support the families caught in the fallout.
As first reported by Crain's Detroit Business, SK Siltron CSS will shut down its Bay County operation and wind down its U.S. subsidiary. Most of the roughly 140 employees are expected to work about 60 more days, with a smaller group staying on a bit longer to handle the shutdown, according to Michigan's Thumb. The company has not shared details on severance, saying only that it will work with state and local leaders to ensure a responsible wind-down.
In a statement to WNEM, SK Siltron cited changes in market conditions and significant changes in the EV market that have created sustained challenges for its silicon carbide wafer business. The company thanked Michigan employees and local officials for their support as operations wrap up. Regional leaders and lawmakers, clearly unhappy to see a high-tech employer walk away, have already vowed to chase new investment to fill the gap.
Federal Loan And Expansion That Never Materialized
This is not how the Bay City project was supposed to end. SK Siltron had secured a conditional commitment for up to $544 million from the U.S. Department of Energy in 2024 to expand SiC wafer production, according to the Department of Energy and the company’s own announcements. State and company materials projected hundreds of construction and permanent jobs tied to that expansion.
Instead of ramping up, the company has been backing out. Michigan's Thumb reports that SK Siltron paid off the federal loan earlier this month as it prepared to wind down the site. It is a sharp reversal that underlines how quickly a federally backed manufacturing bet can sour when the underlying market shifts.
Market Pressures Behind The Shutdown
Industry analysts say the SiC wafer business has been under mounting strain from rapid capacity additions, falling prices and competition from state-backed producers overseas, a combination that squeezes margins even as companies try to scale. That picture is reflected in analysis from TechInsights, which points to aggressive global buildouts and tougher economics for some manufacturers.
Additional market research from Research and Markets highlights intensifying price pressure and a growing risk that SiC wafers become commoditized, even as demand from EVs and datacenters continues to evolve. In that environment, an expansion that looked prudent just a couple of years ago can start to look like a financial trap.
Local Leaders, Worker Help And Next Steps
Bay County Executive Jim Barcia said county officials will push hard to recruit a new manufacturing tenant for the facility and emphasized that supporting displaced workers is the immediate priority. The Bay Area Chamber has also pointed to workforce programs that can step in quickly, according to WNEM.
Great Lakes Bay MichiganWorks and other agencies have been flagged as front-line resources to help with retraining and job placement. Local leaders stress that the plant itself is a strong physical asset, and they say they plan to aggressively market the site to potential buyers rather than let it sit idle.
For now, SK Siltron says it will cooperate with officials on the wind-down and explore options for the property while employees move through notice and transition periods. Local coverage notes that the company’s payoff of its Department of Energy loan this month leaves unanswered questions about severance and the long-term future of the plant, as Bay County scrambles to backfill the jobs that were supposed to be part of a long runway for EV-driven growth.
