Hydrogen is widely considered to be a prime candidate to replace natural gas (methane/CH), on which the UK has depended for years for heat and electricity. But before this can happen, the tricky issue of H2 storage needs to be resolved.
Physical storage of hydrogen is inefficient.
Storage as a compressed gas at pressures of up to 900 times atmospheric is volumetrically inefficient and carries safety implications.
Storage as a liquid requires costly and constant cryogenic cooling to minus 253°C.
Without effective, efficient grid-scale storage, hydrogen’s huge potential will never happen.