Tandem Sun – Si based multi-junction solar cells (SiMJSC) for the best return on investment

Tandem Sun's SiMJSC based on the proprietary Solar Grade III-V substrate is the most efficient solar harvesting technology of today. It is a cost effective and efficient solar harvesting product lowering the cost of electricity to attractive levels even compared to conventional electricity producing technologies. The technology of Tandem Sun is developed at the Royal Institute of Technology-KTH, Stockholm, Sweden.