The density of Si is 2.3 g/cm³. Assume you are making square mc-Si wafers, 15 x 15 cm², 180 µm thick, leading to solar cells of 16% efficiency (assume wafers have 16% efficiency also). Assume 150 µm kerf losses (due to slicing) and sun- light of 1kW/m². How much power can you generate per kilogram of Si (i.e., what is the kWp for wafers per kilogram of Si ingot)?
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