A new solar power parameter, the green energy fraction is proposed as a useful metric for project assessment. Its concept is elucidated and the application to solar/fuel hybrid power plants is exhibited by numerical illustrations. This parameter is a simple tool for tracking the actual green energy performance of a particular plant. It proves to serve a significant yardstick for evaluating fuel avoidance, hence the environmental consequences of solar hybrid power plants. The green energy fraction provides a summation of the fuel avoidance for the whole system, simple or complex, and allows comparative evaluation between power plants for upright green energy (fuel avoidance), and thus enables standard assessments of various systems on an equal basis. It has both thermodynamic and engineering meaning and signifies one of the essential figures of merit for solar power systems. It should assist R&D management to improve technologies. Green energy entitles substantial financial benefits.
The Green Energy Fraction Parameter for Solar Thermal Power Systems
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Roy, A. "The Green Energy Fraction Parameter for Solar Thermal Power Systems." Proceedings of the ASME 2004 International Solar Energy Conference. Solar Energy. Portland, Oregon, USA. July 11–14, 2004. pp. 645-651. ASME. https://doi.org/10.1115/ISEC2004-65071
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