Abstract
This work aims to design a small (5 kW) renewable energy plant, which can supply fully dispatchable electricity to the grid at a cost, inclusive of dispatchability, better than using wind or solar photovoltaic and batteries, specific for remote areas where the solar irradiance is significant, but plagued by clouds. A beam down point concentrator is coupled to a two-tank thermal energy storage system and natural gas heater, to produce constant power by using a Stirling engine. Considered as a conventional combustion fuel plant, the fuel conversion efficiency on the typical day of every month of the typical year is 82%-222%, an average of 124%. This means that replacing an oil generator with the proposed device would permit an 83% reduction of CO2 emissions.
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