Abstract
Flat-plate and concentrator photovoltaic energy systems are analyzed to compare their relative effectiveness in the utilization of the incident radiation at a variety of U. S. locations, the conversion of the incoming radiation to electrical energy and the cost of the electricity delivered at the busbar. This comparative study is limited to three types of flat-plate systems–two-axis tracking, one-axis tracking and fixed-latitude-tilt systems–and one type of concentrator system–two-axis tracking for a point-focus Fresnel lens system. The analysis shows that concentrator systems in the best insolation sites (such as the southwest, in general, and Phoenix, Arizona, in this analysis) may provide substantially lower-cost delivered electric power than flat-plate fixed-latitude-tilt systems or two-axis tracking systems. In many other above average insolation areas, such as Atlanta, Georgia, the cost of delivered power among these systems appears to be about the same.
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