The so-called “H2DRY” technology uses a suitable scrubbing liquid to remove water from the hydrogen by absorption, which is created during production in electrolysers or in contact with moisture in the cavern. If the gas is too moist, this can lead to corrosion on pipes or valves. The technology enables economical and efficient hydrogen treatment on a large scale and is based on Bilfinger’s many years of experience in the field of gas storage.