International Energy Agency (IEA)
solar-PV polysilicon refiner roster + geography: leading manufacturers (p.49), global nameplate 750 kt end-2021 (p.21), China 79% / Xinjiang 42% / largest plant 14% of global capacity in 2021 (p.58); no plant-level capacity
Source
Feed (what to expect)
Static 2022 IEA report for roster/geography; current per-plant nameplate is refreshed from company-official filings + USGS silicon prose (per-row years).
IEA 2022 is roster + geography + a 2021 baseline only; it discloses no plant-level capacity, and its Chinese capacity is a known undercount today (China polysilicon roughly tripled since 2021). Each census row's capacity is labeled with its own year + company-official/USGS source; REC Silicon Moses Lake is carried CLOSED (USGS MCS 2026), never as operating.
Reconciliation
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