Green hydrogen The provinces

Many technologists believe that the electric car that uses hydrogen is the vehicle of the future. But when you talk about hydrogen, you also think about its use in industry and houses. Hydrogen has three qualities: it can be stored in a gaseous or liquid state, it can be distributed with the help of gas pipes and in its combustion it does not emit greenhouse gases. A star in a sustainable energy model. What is the problem? The costs and production of production. Hydrogen must be obtained from other substances. The cheapest, ‘gray hydrogen’, is obtained from fossil fuels, but is not very respectful for the environment and is used by refineries and chemical industry. The ‘blue hydrogen’ also comes from fossil fuels, but is more expensive when passing a carbon collection and storage process. The ‘green hydrogen’, more expensive, is obtained by water electrolysis and fog emissions. The price is because electrolysis uses a lot of electricity. If that energy is obtained with fossil fuels, it does not solve the problem of zero missions. The zero emission cycle requires electrolysis with renewable energy. What is the problem?

Well, the production of renewable electrical energy is intermittent: sometimes it is insufficient to meet the demand, but when the demand exceeds, it stops production. This is because companies in the electricity sector only produce electricity that is consumed. This problem increases when the percentage of renewable energy in the electric mix increases. Situation that can be different if there is a large -scale energy storage system based on hydrogen. If favorable circumstances increase the production of renewable electricity, this is a matter of distracting hydrogen production installations. Science and technology strive to optimize the process. So, so, For an electrical energy price of 2.5 cents per kWh, it is expected that 2.5 euros per kg of hydrogen will be achieved soon, which is profitable. There are other alternatives to obtain hydrogen. One, cheaper than electrolysis, is the use of natural gas. It is called ‘renovated methane’ and in this case the remaining carbon must be eliminated – if a country is not a gas producer, it has outside dependence. Other alternatives are cellulose, ethanol, sugars, the Westinghouse cycle that sulfur uses, etc.

Many experts believe that it is impossible to achieve the EUs environmental objectives by 2050 without a hydrogen -based economy. In the Netherlands, a project with an investment of 1,000 million euros is trying to implement an energy system in the north of the country based on hydrogen. In Spain, with good conditions for renewable energy sources, similar projects would be a dedication to the future of highly scientific, technological and economic interest.