Chinese solar PV manufacturer Risen Energy has achieved a 24.7% conversion efficiency and 767.38Wp maximum power output on its heterojunction (HJT) Hyper-ion modules.
Silicon-based tandem solar cells and modules are expected to enter commercial production in 2027 with a module efficiency of 27%, according to the latest International Technology Roadmap for Photovoltaic (ITRPV) published by German engineering association VDMA.