Global polysilicon prices hold steady as China price gains meet buyer resistance

This is a wholesale market update about polysilicon, the raw material used to make solar panels. It is not something that directly changes what a homeowner pays for a rooftop solar system today, but it points to price pressures that could filter down over time.

The benchmark price for polysilicon made outside China held steady this week. In China, prices for the material used in solar wafers rose nearly 4%, though buyers are resisting the higher asking prices, and many deals are still happening below the new, higher offers. Chinese producers also plan to cut output to around 35% of capacity starting in October, but large stockpiles of unsold material mean this cut alone may not push prices up much further.

In the U.S., a new federal rule limits stockpiling of imported polysilicon and related solar materials ahead of tariff-related import changes that take effect December 4, 2026. The rule is meant to stop a surge of imports tied to the upcoming trade measures. Separately, some manufacturers are showing more interest in U.S.-made polysilicon, since using it can help solar companies qualify for certain tariff relief or incentives tied to building supply chains in the U.S.

For now, none of this changes rebates, panel prices, or available incentives for your own home. But it is part of the backdrop that could affect solar equipment costs and availability in the U.S. over the coming months, especially once the December tariff changes take effect.