PV—H2 pilot plant for experimental study
Seasonal storage of solar energy is a challenging technical problem to which hydrogen technology may provide a feasible solution. In a photovoltaic-hydrogen (PV–H2) system, excess photovoltaic electricity is fed to the electrolyser to produce hydrogen and oxygen from water. The hydrogen thus produced is stored over the season to be converted back to electricity in a fuel cell in the winter. Thus, hydrogen is used as a storage medium to shift solar energy from summer to winter.