Performance of Amonix multijunction arrays

Abstract

After twenty years of commercial deployments of concentrator photovoltaic systems using silicon cells, Amonix has built a new generation of systems designed for III-V multijunction cells. The resulting 7th-generation systems yield a considerable performance dividend in the field-proven system design. The first systems, operating in Las Vegas, NV, achieve AC efficiencies in excess of 25%. Detailed modeling of the cell and system parameters provides a prediction of energy generation that is within 3% of the measured energy after seven months of operation. The predicted annual yield in this location is over 2600 kW-hr/kW. © 2009 SPIE.