SOLAR POWERSAT EFFICIENCY CHAIN This efficiency chain represents reasonable extrapolation of today's technology into 1985, assuming a well-funded, dedicated effort were established to achieve these targets efficiencies. The overall system efficiency is about 15 percent, but most of the unusable heat is rejected into space and doesn't create a thermal pollution problem on Earth. This chart displays efficiency and power throughput for each element of the system based on the best available estimates from analyses and experiments. If these efficiencies are not achieved or are exceeded, they will influence the mass of the satellite and cause an increase or decrease of the mass that must be transported to and assembled in space.
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