{Solar hydrogen hybrid energy systems for off-grid electricity supply: A critical review}

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Title	{Solar hydrogen hybrid energy systems for off-grid electricity supply: A critical review}
Publication Type	Journal Article
Year of Publication	2015
Authors	Abdin Z., Webb C.J, E. Gray MA
Journal	Renewable and Sustainable Energy Reviews
ISSN	18790690
ISBN Number	13640321
Keywords	Electrolysis, Energy vector, Fuel cell, Hybrid energy system, Hydrogen production, Hydrogen storage, Solar
Abstract	Large areas in many countries are populated but have no connection to a national electricity grid. Centralised electricity generating facilities burning fossil fuels have been the norm. Renewable energy resources, especially solar/wind energy, are now penetrating this sector. Long-term energy storage is the universal challenge in providing renewables-based electricity with high availability across the seasons. Here we review and discuss the use of hydrogen as the energy vector by means of which solar/wind energy is transformed, stored and made available as electricity. The dominant system configuration is presently photovoltaic electricity used to electrolyse water to produce hydrogen, which is stored as a pressurised gas or metal-hydride, then retrieved from storage to generate electricity in a fuel cell. We survey the demonstration projects reported in the literature and discuss the need for authoritative system modelling in order to size the system components for minimum cost at a designated availability of supply.
DOI	10.1016/j.rser.2015.08.011