At its core, green hydrogen is made from two simple ingredients — water and renewable energy. The process that brings them together is called electrolysis. It might sound complex, but the idea is easy to understand.

Here’s how it works: electricity from renewable sources like solar or wind is used to split water into hydrogen and oxygen. The hydrogen is collected as clean fuel, and the oxygen is released back into the atmosphere — harmless and pure.

But before electrolysis can happen, the water used must be extremely clean. It goes through several stages of filtration and purification to make sure no minerals or salts interfere with the process. To keep the power supply steady, systems often include batteries that store extra renewable energy and release it when the wind isn’t blowing or the sun isn’t shining.

Once produced, the hydrogen can be stored and transported for use in industries, vehicles, and even power generation.

In short, green hydrogen is created using natural resources — sunlight, wind, and water — to produce a fuel that gives off nothing but water vapour when used.