The progress in the field of sustainable energy with zero carbon dioxide emissions has become inevitable in the current era. Its not only one of the Sustainable Development Goals (SDGs) but also a need of planet earth. The Islands have a substantial amount of locally available renewable sources of energy thus have the potential to reduce or even put an end to usage of fossil fuels for electricity and avoiding long grid connections from the mainland. For the intermittence of Renewable Energy Sources (RES), Hydrogen can be an attractive energy storage option due to its high energy density and long term storage capability.