Mitsubishi Electric Launches Stand-Alone Photovoltaic Electricity Generation System

Mitsubishi Electric Corp. has launched a new stand-alone photovoltaic (PV) electricity generation system. The system, which uses lead-free PV solder modules, will go on sale outside of Japan and is targeted at users living in areas around the world where local electrification infrastructure is insufficient or nonexistent.

The stand-alone system employs a 36-cell array capable of achieving effective generation at 17.1 V, a max power rating of 120 W, a max power current of 6.82A and a max system operation voltage of 780V DC/ 780V DC. Mitsubishi's module also boasts a conversion efficiency rate of 13 percent, the highest in the polycrystalline silicon module manufacturing industry. The use of a solderless cell makes this result possible as it increases the silver electrode reflection efficiency to over 90 percent. Previous PV modules used soldered parts with a lead volume of 864 grams per housing, 24 modules with 40 cells each, thus increasing the negative impact on the environment.