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Stand-alone hybrid power systems are an alternative to main electricity grids, where the grid extension is costly or the trifling local consumption would not justify its expansion. However, lack of consistency and uniformity in renewable energy sources, and the restrictions of energy storage systems make system sizing a challenging task. Optimum size of a stand-alone system depends on several factors including energy demand function. In this paper, different types of demand functions are addressed for optimising a solar-hydrogen supply system. Different parameters are defined to investigate the impact of household population on the power generation cost, and also to determine the optimum supply system specifications. Eventually, using an economic analysis on the desired system, the capitation costs of the electricity generated by this system are compared for different household demand functions. Outcomes suggest that electricity decreases in the demand functions with higher averages and uniform load distribution.

Solar-hydrogen renewable supply system optimisation based on demand side management