Solar Power Satellite Evaluation Study Guidelines For the purposes of the Solar Power Satellite Evaluation Program common guidelines were established which were based upon judgement derived from earlier studies. Initial operational date for commercial satellites — 2000 Technology availability — 1990 Construction materials obtained totally from earth resources Operational satellite in geosynchronous orbit Microwave system operating frequency — 2.45 GHZ industrial band Microwave power density not to exceed 23 mW/cm2in the ionosphere Microwave system sized to provide 5 GW output from rectenna Reference implementation rate assumed to be two 5-GW solar power satellite systems per year (10 GW total) Solar power satellite design lifetime of 30 years Figure 4
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