Integration of a Green Hydrogen Subsystem in a Photovoltaic-Battery Nanogrid System

Renewable Energy Sources can be harnessed through solar Photovoltaic (PV) systems to help transform the currently unsustainable power generation infrastructure in Mediterranean countries to a sustainable one. Specifically, PV-based microgrid systems coupled with efficient energy storage can manage to achieve key energy goals, such as onsite production of green electricity with simultaneous self-consumption. To achieve these decarbonization targets, it is important to explore energy storage technologies that can include storage beyond batteries. This could include the additional integration of a PV-battery microgrid system with a regenerative hydrogen fuel cell subsystem. Such a subsystem includes electrolyzer, fuel cell, and hydrogen storage units; it can provide long term energy storage, with a reduction of the capacity of the battery units in the overall system. Such a configuration may also provide green hydrogen for the fueling of hydrogen electric vehicles. In this study a preliminary investigation of integrating a green hydrogen subsystem to a predefined PV-battery nanogrid is conducted.