Alkaline electrolyze 1 Alkalines 1 Backup storages 1 Electric power utilization 1 Electrolytic cells 1 Electrolyzers 1 Fossil fuels 1 Hybrid systems 1 Hydrogen storage 1 Power curves 1 Power demands 1 Power generation 1 Proton exchange membrane fuel cells (PEMFC) 1 Proton-exchange membrane fuel cell 1 Proton-exchange membranes fuel cells 1 Renewable resource 1 Storage systems 1 Wind power 1 Wind turbines 1 alkaline electrolyzer (AEL) 1 hybrid system 1 power curve 1 power demand proton-exchange membrane fuel cell (PEMFC) 1 renewable resources 1