TheTechno Optimist.

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Tongwei

Polysilicon, TOPCon and HJT solar cells

CNpublic~56,406 staffest. 1992en.tongwei.com (opens en.tongwei.com)Checked 11 Oct

The brief

Analyst view
  • Ranked first in solar cell shipments for 2025 (ninth year in a row) and again in H1 2026, per InfoLink.
  • H1 2026: 155,300 t of polysilicon, 34.78 GW of cells and 13.07 GW of modules sold; first to pass 400 GW of cells.
  • Lost about 7B yuan in 2024 and 5.1B in H1 2026 amid China's solar price war; plans to buy rival polysilicon maker Qinghai Lihao.

Technical approach

As reported
Integration

From purified silicon to finished panels

Tongwei makes the ultra-pure silicon, the cells and the modules, so it can capture margin and control quality across the chain.

Cells

Several cell designs in parallel

TOPCon (its TNC line) is the volume product; heterojunction (THC), back-contact and perovskite tandem cells run as next-generation bets.

Silver

Cutting silver out

Its record heterojunction modules use copper instead of silver for the cell wiring, attacking one of the costliest materials in a solar cell.

Primer