Required.
Cadmium telluride photovoltaic equipment is currently relatively expensive, but the marginal cost of the production process is very low. When R&D and equipment costs can be better shared, cadmium telluride photovoltaic systems have greater room for cost reduction. The average solar PV panel uses approximately 1/2 ounce of silver, which represents 11% of the total raw material cost of the solar PV module. The use of silver exceeds the cost of metal in solar cells by 48%.