Optimization model to combine residential PV with hybrid hydrogen storage German scientists have outlined a model to combine hydrogen storage with conventional battery storage in high-efficient energy buildings powered uniquely by photovoltaics. In the proposed configuration, the DC power of the PV system is connected directly to the hybrid hydrogen system, a lithium-ion battery, an electric water heater, and an inverter, which in turn would provide AC current to the household and a heat pump.A recent study conducted by scientists from German research center Forschungszentrum Jülich GmbH has proposed an optimization model to integrate solar power generation from rooftop ...