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Hydrogen - green energy carrier of the future

  • July 29, 2021
Hydrogen is an essential chemical, already today. However, hydrogen is quickly becoming even more important, as chemical companies, refiners, and new players around the world are looking to build attractive business cases for low-carbon fuels and chemicals. To achieve this, a crucial point is the ability to produce green hydrogen from electrolysis of water with no carbon emissions – at a competitive price point.

Green hydrogen is produced by electrolysis. This process uses electrical power to split water and produce hydrogen. In the case of green hydrogen, the electricity comes from renewable sources such as wind turbines, solar panels, or hydropower. The electrolysis process emits no carbon or harmful substances.


ADVANTAGES AND DISADVANTAGES OF GREEN HYDROGE

This energy source has pros and cons that we must be aware of. Let's go over some of its most important good points:

  • 100 % sustainable: green hydrogen does not emit polluting gases either during combustion or during production.
  • Storable: hydrogen is easy to store, which allows it to be used subsequently for other purposes and at times other than immediately after its production.
  • Versatile: green hydrogen can be transformed into electricity or synthetic gas and used for domestic, commercial, industrial or mobility purposes.
  • Transportable: it can be mixed with natural gas at ratios of up to 20 % and travel through the same gas pipes and infrastructure - increasing this percentage would require changing different elements in the existing gas networks to make them compatible.


IMPACT OF GREEN HYDROGEN

Hydrogen as a fuel is a reality in countries like the United States, Russia, China, France and Germany. Others like Japan are going even further and aspire to become a hydrogen economy. Below we explain what the impact will be in the future:

Electricity and drinking water generator

These two elements are obtained by reacting hydrogen and oxygen together in a fuel cell. This process has proved very useful on space missions, for example, by providing crews with water and electricity in a sustainable manner.

Energy storage

Compressed hydrogen tanks are capable of storing energy for long periods of time and are also easier to handle than lithium-ion batteries because they are lighter.

Transport and mobility

Hydrogen's great versatility allows it to be used in those consumption niches that are very difficult to decarbonise, such as heavy transport, aviation and maritime transport. There are already several projects under way in this area, such as Hycarus and Cryoplane, which are promoted by the European Union (EU) and aim to introduce it in passenger aircraft.



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