Wolfgang Dürheimer, Audi’s technical chief mentioned that the automaker has begun development for a fuel cell-powered A7.

The automaker will begin trials for the fuel cell-powered A7 at the end of August and it is thought that the model is section of the company’s new ‘tron’ array of sustainable technologies. Fuel cells create heat and electricity through an electro-chemical reaction between oxygen and fuel. In automotive applications fuel cells use hydrogen as the fuel and oxygen from the ambient air, therefore, the only by-item is water.

The electricity manufactured by fuel cells can charge a battery or to drive electric engines for propulsion, while thermocouples capture the waste heat for additional electricity generation or perhaps for thermal systems. Back in 2009, Audi has tested the Q5 HFC, which was using two high-pressure cylinders of hydrogen to provide fuel-cell capability to the Q5 HFC’s twin electric motors.