1. From green to pink hydrogen, we reveal the rainbow of hydrogen colours and the different types of technology used to produce each.
2. Green hydrogen, blue hydrogen, brown hydrogen and even yellow hydrogen, turquoise hydrogen and pink hydrogen. They’re essentially colour codes, or nicknames, used within the energy industry to differentiate between the types of hydrogen.
3. Depending on the type of production used, different colour names are assigned to the hydrogen. But there is no universal naming convention and these colour definitions may change over time, and even between countries.
4. Hydrogen is an invisible gas. So, despite their colourful descriptions, there is no visible difference between the different types of hydrogen.
5. In the future, some hydrogen colours may fade in importance and others burn brighter. What’s certain is that the hydrogen rainbow will play a significant role in reaching net zero, as we reduce our historical reliance on fossil fuels and look to green alternatives to power our homes, businesses and transport.