It will be possible to produce “green” hydrogen using renewable energy at the same price as CO2-emitting “grey” hydrogen (made from methane) within about five years, according to Siemens.
Green hydrogen — created by splitting water molecules into hydrogen and oxygen inside electrolysers powered by renewable electricity — is often cited as the best option for long-term renewable-energy storage. Green hydrogen can be stored indefinitely and converted back into electricity whenever required using fuel cells (or by burning hydrogen to drive turbines).
