Zervas et al. studied photovoltaic array, electrolyzer, and metal hydride tanks and proton exchange membrane cells of hybrid power generation plant.
A proton exchange membrane cells can efficiently store solar energy by transforming it to hydrogen which is the source of fuel supply to fuel cell [50].
Nelson et al. worked on sizing and economic evaluation of a hybrid wind/PV or fuel cell power generation system.
They compared the cost of such system with wind/PV/battery system for a typical home in US Pacific Northwest.
They also clearly pointed out that, after analyzing current cost figures as well as break even line distance comparison, traditional wind/PV/battery system is economically viable over wind/PV/fuel cell/electrolyzer system [51].
ElShatter et al. worked on an energy system to deliver energy at optimum efficiency using Fuzzy logic control to have maximum power tracking of PV and wind energies employed there.
They developed such system in a way such that PV,wind and fuel cells combined
together in a systematic way to deliver the maximum power to a fixed direct current (DC) voltage bus.