heating

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.

Danish gas transmission system operator Evida will exempt homeowners and individuals that want to abandon gas and choose renewable energy for heating from paying the grid disconnection fee. The scheme will be run on a first-come, first-served basis.

Researchers in Spain have compiled a list of key performance indicators intended at evaluating not only the quality of a heat pump or a PV generator; but also the quality of their integration. pv magazine spoke to research co-author Celena Lorenzo about the potential and challenges of this combination. According to her, heat pumps powered by PV alone are efficient enough for both cooling and heating.

The German companies are developing an intelligent energy solution for heating, hot water, energy management and solar power generation in a single coordinated system.