What are the three colors of hydrogen
Hydrogen, alongside renewables and natural gas, has an important role to play in the transition to a cleaner energy landscape.
It’s a fuel of choice for industries looking to decarbonize, but not all hydrogen is created the same. Although the gas only emits water when burned, its contribution to carbon neutrality depends on how it is produced.
This video looks at the three different types of hydrogen – gray, blue and green – and examines their environmental credentials.
Gray hydrogen is made using fossil fuels like oil and coal, which emit CO2 into the air as they combust. The blue variety is made in the same way, but carbon capture technologies prevent CO2 being released, enabling the captured carbon to be safely stored deep underground or utilized in industrial processes.
As its name suggests, green hydrogen is the cleanest variety, producing zero carbon emissions. It is produced using electrolysis powered by renewable energy, like offshore wind, to produce a clean and sustainable fuel.