Although First Solar’s Cd-Te solar panels have been recording significant efficiency gains over the last three years, they have lagged behind their silicon peers in terms of rated peak power. This means that a larger number of solar panels are required for a given system size, translating into higher balance of systems costs (such as mounting and labor). However, the company looks set to address this handicap with the introduction of its much anticipated Series 5 modules, which were unveiled in late June. Below we take a look at why the module may be very important to First Solar’s business.

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