Table A4
Material flows for 2032 ITRPV projection/Closed-loop scenario.
| Scenario 4 Built-in Si − 26.9 g/MWh |
Input (g) | Feedstock | Waste/loss treatment | Output (g) | Use of recovered material (internal/external) |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Production process | Virgin | Recycled | Total input | Yield | EF | FR | P'R | E'C | Product | Unrecoverable waste | Recovered material | Total output | |
| MG silicon production* | 30.5 | 0 | 30.5 | 0.79 | 0 | 0 | 0.98 | 0.99 | 24.2 | 0.2 | 6.2 | 30.5 | External |
| Polysilicon production | 24.2 | 30.0 | 54.2 | 0.88 | 0.84 | 0.55 | 0 | 0 | 48.0 | 6.2 | 0 | 54.2 | |
| Cz ingot pulling | 48.0 | 34.6 | 82.6 | 0.98 | 0.96 | 0.42 | 0 | 0 | 81.0 | 1.7 | 0 | 82.6 | |
| Cropping and squaring | 81.0 | 0 | 81.0 | 0.55 | 0 | 0 | 0.98 | 0.96 | 44.2 | 1.5 | 34.6 | 81.0 | Internal |
| Wafering | 44.2 | 0 | 44.2 | 0.71 | 0 | 0 | 0.99 | 0.65 | 31.2 | 2.4 | 8.3 | 44.2 | Internal |
| PERC cells production | 31.2 | 0 | 31.2 | 0.88 | 0 | 0 | 0 | 0 | 27.4 | 3.8 | 0 | 31.2 | |
| Module assembly | 27.4 | 0 | 27.4 | 0.98 | 0 | 0 | 0 | 0 | 26.9 | 0.5 | 0 | 27.4 | |
| End-of-life | CR | EC | |||||||||||
| Photovoltaic waste | 26.9 | 0.85 | 0.95 | 4.6 | 21.7 | 26.9 | Internal | ||||||
*The mass of material entering MG silicon production is transformed to mass of silicon in quartzite (SiO2). Silicon corresponds to around 46.75% weight in quartzite [45].
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