OK, concentrating light onto solar cells means more power output. But does that mean its more cost-effective?
Not necessarily. Concentrating photovoltaic systems often require lenses or mirrors to focus the light onto solar cells. To maximize the amount of light they receive, high-concentration systems can be mounted and need a motor so that the cells track the movement of the sun over the course of the day. So although manufacturers may be saving money on solar cells, the additional equipment can raise the price.
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