Solar PV module supply chain chokepoints

category tradeable chokepoint

How scores are shown

Criticality comes from the trace model and describes the node's dependency importance.

Evidence comes from the canonical Vein Graph: AI assertions, user corrections, and external sources.

Completeness is a data-coverage label based on available summary, evidence, sources, tickers, and chokepoint rationale.

Dynamic claims are capped below 100% and AI-only edges remain labeled as inferred. Model: trace-score-v1.

Polysilicon & ingot90% confidence — China produces the vast majority of polysilicon; Xinjiang supply faces trade scrutiny.

Wafer slicing90% confidence — Wafer capacity is concentrated in a handful of mega-fabs.

Silver paste & glass83% confidence — Silver consumption scales with module output; glass supply tightened during build-outs.

Inverter & grid interconnect90% confidence — Transformer lead times and interconnection backlogs delay project energization.

Solar photovoltaic moduleRenewable energy

Crystalline silicon PV module integrating cells, glass, encapsulant, frames, and inverters for utility-scale deployment.

Criticality: unknownEvidence: UnverifiedCompleteness: thin

Polysilicon & ingotMaterials⚠ chokepoint

Metallurgical-grade silicon refined to solar-grade polysilicon and cast into ingots.

China produces the vast majority of polysilicon; Xinjiang supply faces trade scrutiny.90% confidence

DQ—Daqo New Energystock

ProducerSupplies into this nodeSupply-chain context only — not investment advice.

Criticality: highEvidence: UnverifiedCompleteness: partial

Wafer slicingProcessing⚠ chokepoint

Diamond-wire sawing of ingots into thin wafers with kerf loss and surface quality control.

Wafer capacity is concentrated in a handful of mega-fabs.90% confidence

Criticality: highEvidence: UnverifiedCompleteness: partial

— core tradeable element

Solar cell & module assemblyManufacturinghigh criticality

PERC/TOPCon cell processing, lamination, and module testing.

FSLR—First Solarstock

ProducerSupplies into this nodeSupply-chain context only — not investment advice.

Criticality: highEvidence: UnverifiedCompleteness: partial

— core tradeable element

Silver paste & glassBill of materials⚠ chokepoint

Front-side silver contacts, tempered glass, EVA encapsulant, and aluminum frames.

Silver consumption scales with module output; glass supply tightened during build-outs.83% confidence

Criticality: mediumEvidence: UnverifiedCompleteness: partial

— core tradeable element

Inverter & grid interconnectBalance of system⚠ chokepoint

String/central inverters, transformers, and interconnection queues for utility projects.

Transformer lead times and interconnection backlogs delay project energization.90% confidence

Criticality: highEvidence: UnverifiedCompleteness: partial

— core tradeable element

Generated analysis — not investment advice.

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