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Alternative for the battery: hydrogen!

26 July 2019 

Elfa lives on batteries and has had over 100 year of expertise in the field of batteries. Still, it is not blind to other developments. We think that the battery for small-scale use will continue playing an important role. But where batteries will move cars, or, bigger still, supply power to houses and companies, we expect that the role of the battery will become small in the decades to come. After all, hydrogen offers a better alternative.

 

If we want to store wind and solar power for a long time, converting it into hydrogen seems to be the best option now. The green electricity splits water into an oxygen and hydrogen process through an electrolysis process. Some energy is lost, but the obvious advantage is that hydrogen gas can then be stored in tanks indefinitely. When incinerated, the energy is released again, but without CO2 in contract to the combustion of natural gas where CO2 is released. The residual product is pure water.

 

Plans are currently being elaborated for an energy island in the North Sea with a hydrogen plant that converts electricity from offshore wind farms into clean gas. Factories can use hydrogen as an energy source or as a raw material. And it can even be brought to our homes via the existing natural gas network. Cars can drive on it. And these hydrogen cars can in turn function as power plants that supply electricity to the grid at peak hours. We believe in it and meanwhile also see countless applications for the battery.

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