In what units of measure is hydrogen sold?
Most industrial hydrogen is sold as a normal cubic meter (Nm3) or by hundred standard cubic foot (cscf) or thousand standard cubic foot (mscf) increments. This is even true when it is sold as a cryogenic liquid. For vehicle fueling, fills are reported in kilograms (kg) or gasoline gallon equivalents (GGE). In the United States, the sale of hydrogen cannot take place at the fueling dispenser until the Bureau of Weights and Standards has approved hydrogen as a motor fuel.
