Abstract: A method for filling tanks with pressurized gas via a filling station comprising several storage containers and a fluid circuit for transferring the gas from the containers to the tanks, the circuit comprising a first end to which the containers are linked in parallel and a second end provided with a transfer line intended to be connected to the tank(s) to be filled, the circuit comprising, arranged in series between the first end and the second end, a first isolation valve, a flow or pressure regulation member, and a second isolation valve, the method comprising filling a first tank, characterized in that, on completion of the filling of the first tank and before filling a second tank, the first and second isolation valves are closed to trap a supply of pressurized gas in the circuit between said two valves and in that the supply of gas is used to refill at least one of the containers.

Abstract: Air is compressed in an air compressor to produce a stream of compressed air, wherein at least part of the stream of compressed air is sent from the compressor to an air separation unit. The air separation unit produces a fluid enriched in a component of air, wherein the fluid is sent to a first unit in which an exothermic process takes place. The heat generated by the exothermic process is used to produce steam. At least part of this steam is sent to a steam turbine, where the work generated by the steam turbine is used to power at least the air compressor, and a product of the air separation unit is sent to a further unit in which at least one additional process takes place.