Technical, Environmental, Economic Evaluation of SPS V1 Summary

Figure XI-3.- Conventional and advanced power generation system costs. Also shown in the figure is the range of costs estimated for the SPS. The possible SPS costs span the range from a low of 29 mills/kWh for the lightest weight, lowest transportation and unit cost system to 115 mills/kWh for the highest weight, highest transportation and unit cost system. At the low range, the SPS cost is competitive with current conventional systems, and the highest estimated cost is no greater than that of other advanced systems presently receiving research and development support. Terrestrial solar power.- A brief design and evaluation study was performed to determine the relative cost of electricity for alternate terrestrial solar power concepts. Figure XI-4 illustrates a generalized energy flow diagram for a terrestrial solar power system. As two example cases, a photovoltaic and a thermal cycle (steam Rankine) were analyzed to determine the cost of electricity for these systems.

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