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SolarCity announced today that it has built the most efficient rooftop solar module with 22% efficiency according to a third party tester: Renewable Energy Test Center. Until now, SunPower’s X-Series panel was considered the most efficient rooftop panel with 21.5% efficiency.
SolarCity CEO Lyndon Rive says that the new modules will produce between 350 to 360-watt compared to the company’s current 260-watt panels. expand full story