Hydrogen produced through the electrolysis of water using renewable energy is called :
Green hydrogen
Hydrogen is labelled by colour codes that indicate how it is produced and how much carbon is emitted.
Green hydrogen is produced by electrolysis of water, \(2H_2O \rightarrow 2H_2 + O_2\), using electricity from renewable sources such as solar or wind. Its production releases almost no greenhouse gases. India launched the National Green Hydrogen Mission in 2023 to promote it.
Grey hydrogen is made from natural gas by steam methane reforming without capturing the CO2. Black (or brown) hydrogen is made by gasification of coal or lignite and has the highest emissions. White hydrogen refers to naturally occurring geological hydrogen.
So hydrogen from electrolysis of water powered by renewable energy is green hydrogen.
Hence, Green hydrogen.