Green hydrogen is inherently carbon-neutral, as its entire lifecycle—from production to end use—generates no net carbon emissions. Produced by electrolyzing water using electricity from renewable sources like solar, wind, or hydro, the process consumes only water and clean energy, releasing oxygen as a byproduct. When green hydrogen is used—whether in fuel cells for electricity, in industrial processes, or for heating—it reacts with oxygen to produce energy and water, with no carbon dioxide or other greenhouse gases emitted. This closed loop ensures that no carbon is added to the atmosphere, distinguishing it from grey hydrogen (made from fossil fuels with high emissions) or blue hydrogen (fossil-based with carbon capture, which still has residual emissions). As a carbon-neutral energy carrier, green hydrogen is vital for achieving global climate goals, enabling sectors like heavy industry and long-haul transport to decarbonize where direct electrification is challenging.