Wolfspeed's Mohawk Valley Fab in Marcy, New York - the world's first purpose-built 200mm silicon carbide device fab and the only high-volume SiC line on U.S. soil - is finally doing what it was financed to do. Output is climbing, the company is out of bankruptcy, and a CHIPS Act package is on the table to feed the fab with American wafers. The problem is that the SiC market the fab was sized for in 2022 no longer exists in 2026. EV adoption has slowed, Chinese substrate suppliers have flooded the upstream, and the OEMs that once signed multi-year volume commitments for SiC power modules are reopening those contracts on terms that look very different from the take-or-pay world Wolfspeed planned around.
What Mohawk Valley actually is
Mohawk Valley Fab (MVF) is a fully automated 200mm SiC device fab at the Marcy Nanocenter in upstate New York. Combined with Wolfspeed's 200mm substrate operation, it is the only fully vertically integrated 200mm SiC franchise running at scale, and the only U.S. site producing SiC power devices in volume. The strategic logic was straightforward: bigger wafers mean more die per substrate, lower unit cost, and a structural answer to Chinese competition that has so far concentrated on 150mm and 200mm wafer supply rather than finished device fabs.
MVF revenue reached $52 million in the second quarter of fiscal 2025, a 6% sequential increase, and management has guided to a continuing 200mm device ramp through fiscal 2026 as utilization rises. Independent trade reporting has separately tracked the fab through a 20% utilization milestone, with yield and ramp issues persisting at the levels typical of a first-of-kind 200mm SiC line. To consolidate device production, Wolfspeed has shut its legacy Durham 150mm device fab and concentrated all device output on MVF.
The financial reset
Wolfspeed entered 2025 with a balance sheet that could not survive a soft cycle. The fix was a prepackaged Chapter 11 filed on June 30, 2025 and completed in 91 days, with the company emerging on September 29, 2025. According to the restructuring disclosure, the plan eliminated roughly $4.6 billion of debt, cut annual interest expense by approximately 60%, and carried support from about 97% of senior secured lenders and 67% of convertible holders.
The operational side of the reset is just as significant. Fiscal 2026 capital expenditure has been cut by approximately 90% year-over-year and limited to previously committed spend, per the company's most recent quarterly 8-K. The first post-emergence quarter, reported in the Q1 fiscal 2026 release, set the baseline for an MVF-only device footprint. The company is now a smaller, more focused operation whose entire industrial thesis sits inside one fab.
Demand: EV adoption slowed, and Tier 1s noticed
SiC's commercial case in automotive rests on traction inverters, on-board chargers, and DC-DC converters - the parts of an EV powertrain where SiC MOSFETs cut switching losses enough to justify the silicon-carbide premium. That premium gets harder to defend when volumes disappoint. EV adoption has not collapsed, but the slope is flatter than the 2022 plans assumed, and tariff policy has compounded the margin pain on the automotive side. General Motors cited a $1.1 billion operating-income hit in Q2 2025 from U.S. auto tariffs; Stellantis reported a tariff cost north of €300 million in the first half of 2025.
When Tier 1 powertrain integrators and OEM purchasing teams take that kind of margin hit, they reopen supplier long-term agreements. The pattern showing up in 2025 and into 2026 is consistent across power electronics commodity desks: shorter durations, looser volume bands, indexed or repriceable pricing, and a preference for volume-only commitments without locked unit economics. SiC modules are not exempt. With a glut of substrate capacity coming online, buyers can credibly threaten to dual-source or to delay SiC adoption in lower-trim vehicles back to silicon IGBTs.
Supply: a Chinese-led price collapse
The supply side is where Wolfspeed's timing problem is sharpest. Chinese suppliers had captured roughly 40% of global SiC wafer and epiwafer capacity by 2024 and continued to expand through 2025. TrendForce data showed 6-inch SiC substrate prices falling roughly 30% in late 2024, with Digitimes and Semiconductor Today documenting the same trajectory through the device chain. SiC MOSFET, module, and diode average selling prices are now at multi-year lows.
The roadmap signal is harder to dismiss. In March 2026, Tiancheng Semiconductor disclosed a 14-inch SiC single crystal - a step that, if it scales, leapfrogs the 200mm wafer roadmap that Western device fabs including MVF were built around. That does not necessarily change near-term economics, but it puts a ceiling on how long 200mm SiC remains a cost-of-position moat for U.S. and European producers.
Yole Group's December 2025 outlook formalized the resulting overhang. Yole expects power SiC to remain in overcapacity until 2027-2028, with 2025 utilization at roughly 50% upstream and 70% on device lines, before the device market grows toward approximately $10 billion by 2030. That is the timing window Wolfspeed has to survive on a thinned balance sheet.
The policy and financing stack
The counterweight to the cycle is the federal financing package. On October 15, 2024, the U.S. Department of Commerce signed a non-binding Preliminary Memorandum of Terms with Wolfspeed for up to $750 million of CHIPS Act direct funding for the John Palmour Manufacturing Center in Siler City, North Carolina and an M-Line West expansion at MVF. An Apollo-led investor group committed an additional $750 million, and the company expects roughly $1 billion in Advanced Manufacturing Investment Credit cash refunds, according to the company's own disclosure of the package. Trade-press reporting from Manufacturing Dive and a Senate statement tied the announcement explicitly to MVF expansion and Marcy-area jobs.
Siler City, per NIST's CHIPS profile, is designed as a 2 million square foot 200mm SiC wafer plant, intended to be the world's first high-volume 200mm SiC wafer facility and the upstream feed for MVF. The vertical chain - Siler City wafers into MVF devices - is the structural story Wolfspeed is now executing on a tighter capex envelope.
The unresolved variable is durability. The Preliminary Memorandum is non-binding, the final CHIPS award has not been disbursed, and a federal posture that has reshuffled industrial-policy priorities since 2024 could move terms before money lands. Wolfspeed's financial plan assumes the package converts; a delayed or smaller award would force another look at the Siler City build-out cadence.
What buyers are getting at the negotiating table
For automotive Tier 1s building inverters and on-board chargers, and for industrial drive OEMs procuring SiC modules for 2026-2028 platforms, the negotiating posture has flipped. The combination of Chinese substrate oversupply, depressed module ASPs, and a recapitalized but still capital-constrained Wolfspeed gives buyers three concrete levers:
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Shorter terms. Two- and three-year deals are replacing five- and seven-year LTAs, because no buyer wants to be locked into 2024 pricing through a 2027-2028 overcapacity trough.
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Volume-only commitments. Pricing increasingly indexes to a benchmark (substrate, wafer, or finished-module) rather than being fixed at signing.
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Multi-source clauses. Buyers retain the right to qualify Chinese or alternative Western suppliers without triggering volume penalties.
Wolfspeed is competing for those contracts against STMicroelectronics, Infineon, and onsemi, all of which have larger balance sheets and broader product portfolios. The MVF pitch - U.S.-domiciled, vertically integrated, 200mm-native - is real, but it is not yet a price advantage, and the customers know it.
Risk and outlook
The base case for Wolfspeed in 2026 is straightforward to describe and hard to execute: ramp MVF yield, hold capex flat, convert the CHIPS PMT, keep Siler City on a credible schedule, and survive the overcapacity window until Yole's projected 2027-2028 inflection. Each link in that chain has tail risk. MVF yield must improve faster than ASPs decline. The CHIPS award must close in something close to its current form. Chinese substrate cost curves must not compress faster than 200mm-native device cost improvements. And the company has to do this with a thinner cushion than any of its peers.
What it means for buyers and operators: the next eighteen months are a buyer's market in SiC power modules, and Wolfspeed is one of the suppliers most exposed to that dynamic. For procurement teams, that is leverage. For the U.S. industrial base, the test is whether the only domestic high-volume SiC line can make it to the other side of the cycle on the financing stack the federal government has assembled around it.
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Sources
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Wolfspeed press release: $750M CHIPS Act preliminary funding + $750M Apollo-led financing
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eeNews Europe: Wolfspeed faces ramp-up challenges at Mohawk SiC power fab
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Semiconductor Today: Yole - power SiC overcapacity until 2027-2028
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Digitimes: Global SiC substrate prices plummet as China expands production
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Semiconductor Today: SiC prices plunge as Chinese manufacturing ramps