The construction of PV solar cells uses a number of critical elements. One is indium, an ingredient of the transparent conducting coating on the surface of the cell. Find the material intensity of indium in solar cells from the table in Appendix 2 of this chapter and use it to calculate the quantity of indium that would be required for the project described in the previous question: that of providing PV solar power with capacity factor of 0.25, sufficient to meet one third of the present needs of the US population, 301 million, each using an average of 10.2 kW.
The current world production of Indium is 600 metric tons per year. If the solar project were to be implemented over a 5-year time span, would the supply of indium be adequate?
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