REVISTA DYNA ENERGÍA

This energy source has pros and cons that we should be aware of. Let us review some of its most important positive points:

• 100 % sustainable: green hydrogen does not emit polluting gases either during combustion or during production.

• Storable: hydrogen is easy to store, allowing it to be used later for other purposes and at times other than immediately after its production.

• Versatile: green hydrogen can be transformed into electricity or synthesis gas and used for domestic, commercial, industrial or mobility purposes.

• Transportable: it can be mixed with natural gas in proportions of up to 20 % and travel through the same pipelines and gas infrastructures - to increase this percentage, different elements of existing gas networks would have to be changed to make them compatible.

However, green hydrogen also has negative aspects to be taken into account:

• High cost: energy from renewable sources, key to generating green hydrogen through electrolysis, is more expensive to generate, which in turn makes obtaining hydrogen more expensive.

• High energy consumption: the production of hydrogen in general and green hydrogen in particular requires more energy than other fuels.

• Safety issues: hydrogen is a highly volatile and flammable element, so extensive safety measures are required to prevent leaks and explosions.