Overview

Wacker is a leading producer of semiconductor-grade polysilicon (eleven-nines purity) — the feedstock for single-crystal ingots. (Scaffold stub.)

Position in the chain

• Consumes: metallurgical-grade silicon from smelters like Ferroglobe.
• Supplies: polysilicon to wafer makers like Shin-Etsu — see Inputs.
• The Siemens process is energy-intensive — see the Energetic Index.

What to verify

(scaffold — semiconductor vs solar grade split, energy per kg.)