Hydrogen Calculator

Hydrogen storage pressure

Hydrogen is typically stored at pressures ranging from 150 bar to 900 bar (15–90 MPa), depending on the application. In the automotive sector, hydrogen is most commonly stored at pressures of 350 and 700 bar.

Mass of stored hydrogen

The mass of stored hydrogen depends primarily on the storage technology chosen. Hydrogen is the lightest element, which means that although it has an impressive energy density per unit mass, its volumetric density is exceptionally low.

Volume of stored hydrogen

Thanks to advanced compression technologies capable of pressures up to 700 bar or liquefaction, the same amount of energy can be reduced to just 14–25 liters, making it suitable for practical use in transportation and industry.

The energy content of hydrogen

Energy per unit mass (Gravimetric density): 1 kg of hydrogen contains approximately 120 MJ of energy (calorific value). This is nearly three times more than gasoline or diesel fuel (approx. 43–45 MJ/kg).

Energy per unit volume (Volumetric density): Under standard conditions, 1 m³ of hydrogen provides only about 10.8 MJ, while 1 m³ of gasoline provides as much as 32,000 MJ. Therefore, compressing or liquefying it is essential.