Green hydrogen is taking a deserved lead in the Energy Transition. But at the moment, Green Hydrogen production is not competitive.
When will producing green hydrogen be profitable? Is Blue Hydrogen an alternative?
In recent months, the number of news items about the hydrogen exploded exponentially. No day goes by without a new post on a new electrolyser project, a hydrogen storage project, new production capacity targets or collaborations between companies, or even between states, for the development and implementation of technologies related to the hydrogen.
The latest most relevant news announces that the Italian government wants the hydrogen to cover 20% of the final energy demand in 2050 and recently presented its strategy to achieve this. In Spain, the Government approved the Green Hydrogen Roadmap, which aims to achieve a capacity of 4 GW of electrolysers by 2030. Both countries want to collaborate to become a benchmark in southern Europe in terms of green hydrogen production. According to AleaSoft, the hydrogen revolution is necessary and at the same time it enhances the photovoltaic revolution, that is, it is its perfect complement, and the green hydrogen is destined to be the fuel of the future.
What colour is the hydrogen?
There is talk about black, gray, brown, blue hydrogen and the one that seems the most appropriate, which is the green hydrogen. In fact, the hydrogen is a colourless gas. The name of the hydrogen colours is according to the way it is produced and is an indication of the amount of CO2 that is released during the process or of how “clean” it is. The black or brown hydrogen is a product of the coal gasification and CO2 is released during its production.
The gray hydrogen is produced from the steam methane reforming from natural gas. This is the most widely used production system today and it also generates CO2 emissions. If all or a large part of these CO2 emissions are captured with a carbon capture, utilisation and storage (CCUS) system, then the generated hydrogen is called blue hydrogen. This production system is considered low‑emission, but not completely emission‑free and it is intended to be a transition system to reduce the emissions.
Finally, there is the green hydrogen, produced directly from the electrolysis of water using electricity from renewable sources such as the photovoltaic energy, the wind energy or the hydroelectric energy. The green hydrogen is considered to be the only one that, in the long run, can function in a fully decarbonised economy.
The costs of producing hydrogen and its expected evolution
Today, practically all the hydrogen produced in the world comes from fossil fuels. According to Wood Mackenzie, the black, brown and gray hydrogen represent 99.6% of total world production. This means that their production costs are closely linked to the fossil fuels prices, especially natural gas prices. Currently, with the low gas prices, the gray hydrogen is the one with the lowest production cost.
On the other hand, the costs of the green hydrogen production are closely linked to the electricity prices. In the long term, by 2040, the cost of producing green hydrogen is expected to drop by around 65%, thanks to the competitiveness of the photovoltaic energy prices, while the costs of producing gray and blue hydrogen are expected to increase more than 80% due to the increase in natural gas prices. It is around this date, 2040, when the costs of producing green hydrogen are expected to equal those of hydrogen from fossil fuels.
The production of low‑emission hydrogen is increasing rapidly, especially with electrolysers, although its presence is still very testimonial. The announcement of new capacity for the next few years does not stop increasing and more and more innovative projects are committed to using the hydrogen, especially in the industry and the transport sector.
Source: AleaSoft
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