unless some additional moisture is added. In general, soil albedo is a relatively local phenomenon and will be site specific. This first order effects analysis indicates that the parabolic dish- Brayton engine solar power plant will not deposit excess waste heat. The impact of waste heat should be small, but detailed study is required in this area before definite conclusions can be reached about the heat balance and environmental effects of the presence of the plant. The visual impact of the parabolic dish collector solar power plant will be long lines of circular looking dishes approximately 36 ft in diameter on skeleton structures. These dishes will follow land contours rather than being arranged in square or circular patterns unless the land is flat. Since the collectors rotate, their appearance will vary during the day. There will be almost no building associated with the plant and no cooling towers or other large structures. The number will depend upon the land area available, but about 5900 dishes will be used to generate 100 MWe (daytime average) over appro- approximately a 0.6 to 1.1 square mile area. No data are available at this time on material needs, construction time, energy break-even point, or manpower requirements for construction or maintenance. Neither have attempts been made at this time to identify hazardous materials, safety problems, or waste products (besides waste heat) produced directly at the site or from fabrication materials. Operation and maintenance costs have also been neglected due to unavailability of data. 4.2 CENTRAL GENERATION The central generation system uses dish solar collectors to capture energy over a large land area. This energy is carried by a fluid and taken to a central site where a large steam Rankine plant is used to generate electric power. The
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