REC presented two new solar panel concepts at PV Japan in Tokyo from July 30-Aug. 1: a design with half-cut cells and the REC Peak Energy next generation concept. The main visual difference of REC’s half-cut concept is that the standard cell size is cut in half. The benefits are a higher fill factor and higher efficiencies, resulting in better energy yields, especially at times of high irradiance. Panels with a higher fill factor have a lower resistance, where current losses internal to the ...