❯ US Sets Minimum Import Prices for Solar Supply Chain; Modules No Less Than $0.38 per Watt

PRICES SETThe US has set minimum import prices across the solar supply chain: $21 per kilogram for polysilicon, $100 per kilogram for polysilicon ingots and wafers, $0.22 per watt for solar cells, and $0.38 per watt for solar modules, plus a 15% ad valorem tariff on specified polysilicon ingots and related derivative products — reportedly taking effect in early December.

CONTEXTWashington’s stated rationale is not trade but national security: polysilicon is also a critical semiconductor material, tied to radar, communications, and the control systems of missiles and drones, so domestic capacity is deemed critical. Previous solar interventions relied mainly on tools like anti-dumping duties and the 15% ad valorem tariff — but a minimum price is a harder instrument: a tariff only adds cost, a price floor draws a line no one can undercut, shutting down the entire playbook of winning on scale and cost. The package reportedly takes effect in early December, covering all four segments: polysilicon, wafers, cells, and modules.

SPILLOVERIt looks like a solar story, but the landing point is compute. Polysilicon is a shared upstream for both semiconductors and solar, and AI data centers are the most voracious buyers of incremental electricity right now. The first to feel the pressure are operators building data centers in the US: with module prices held above $0.38 per watt, the construction cost of supporting solar plants rises along with it, and the math on self-built green power turns ugly immediately. Where the power comes from and what it costs per kilowatt-hour is becoming a line item in the compute buildout every bit as important as buying GPUs.

▪ SIGNALThe floor is drawn under solar; the pressure lands on the data center’s power bill.