Silicon's Chokepoint Is Solar, Not Semiconductors
China refines about 93% of silicon metal and 96% of solar-grade polysilicon, but only about 35% of semiconductor-grade, a genuinely different split.
Silicon’s supply chain concentration looks completely different depending on which of the three purity grades covered on this material’s mining page you are actually asking about.
Why solar and semiconductors show opposite pictures
Solar-grade polysilicon and wafer manufacturing concentrate overwhelmingly in China, a real, current policy concern for countries building domestic solar manufacturing. Semiconductor-grade silicon, by contrast, is comparatively diversified across Japan, Taiwan, Germany, and other established chip-supply-chain countries, since the extreme purity electronic-grade material, covered on the materials science page, has a longer-established, more geographically spread production base than solar’s.
Why this matters for the grade, not the element
A resilience assessment that reports “China dominates silicon supply” without naming which grade would conflate two genuinely different risk profiles, a real near-total solar manufacturing chokepoint and a comparatively more diversified semiconductor-grade picture, covered on this material’s economics page.
Sources: concentration figures by grade reference the production data elsewhere on this site and widely reported industry structure (USGS, IEA Critical Minerals Outlook, SEMI).