Key Findings
China has proposed adding 12 photovoltaic technologies to its Catalogue of Technologies Prohibited or Restricted from Export. Published on Oct. 16 under Joint Announcement No. 48 of 2026, the proposal is part of a broader consultation on 40 technologies across AI, biomedicine, and solar energy, with public comments open until Nov. 15.
Technical Details
The proposed export bans specifically target manufacturing technologies and equipment for:
- Perovskite-silicon tandem solar cells based on wafers of at least 182 mm with conversion efficiencies of 30% or higher.
- Perovskite slot-die coating processes with widths of at least 1.1 meters.
- Single-junction perovskite modules of at least 1 square meter with efficiencies of 18% or higher.
- Perovskite tandem modules of at least 1 square meter with efficiencies of at least 28%.
- Trichlorosilane production via cold-hydrogenation fluidized-bed processes (annual single-line capacity ≥ 250,000 metric tons) and silane-based fluidized-bed processes (annual capacity ≥ 20,000 metric tons).
- Silicon wafers no thicker than 70 micrometers and specific edge-passivation technologies for thin crystalline-silicon cells.
Additionally, the “restricted-export” category includes polysilicon plant engineering for lines with annual capacities of at least 30,000 metric tons, advanced crystal-pulling, wafer-cutting, and high-performance processes for TOPCon, BC, and HJT cells. HJT provisions include p-type technologies evaluated under air mass zero (AM0) conditions for space applications.
Background & Context
Mofcom cited national security concerns, noting that PV technologies are increasingly used in defense and aerospace. While finished modules remain exempt, the controls target the “know-how,” including licensing, equipment exports, and on-site technical support. An interim registration requirement for these technologies took effect on Oct. 16.
Significance & Outlook
If adopted, these measures could reinforce China’s dominance in advanced PV manufacturing by slowing the ability of overseas manufacturers to close the technological gap. However, the restrictions may also complicate the international expansion of Chinese firms and increase trade tensions.
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