BER [Berlin Brandenburg Airport] is an ideal partner as it possesses the world’s first CO₂ neutral gas station. The Total gas station provides green hydrogen produced from wind energy by Enertrag. Both firms, Total and Enertrag, are also partners of our market trial. Now that we have signed up BER as a new partner, we have closed the circle of sustainable mobility.

— Opel Vice President of Government Relations, Volker Hoff

Opel has been running market trials with fuel cell vehicles since 2008.

The new Berlin Brandenburg Airport (BER) will become fully operational on 3 June 2012 and will replace the old airports of Tegel and Schönefeld. Apart from BER a string of companies including the ADAC, Allianz, Axel Springer AG/Bild, Coca-Cola, Hilton, Linde, Pace, Schindler, Veolia and the NH Hotel Friedrichstraße have been testing hydrogen as a futuristic and clean form of fuel in conjunction with the Opel HydroGen4. Public institutions such as the Berlin office of the state of Hesse have also been involved.

The Clean Energy Partnership (CEP) is a project that is promoted by Germany’s Federal Minister of Transport, Building and Urban Affairs in which the everyday suitability of hydrogen as a fuel in daily traffic is shown. It constitutes the largest such developmental program in Europe.

The Opel HydroGen4 features a fuel cell stack comprising440 series-connected cells that produce the electrical output to power the synchronous electric motor. The 73kW/100hp engine unit delivers an acceleration rate of 0 to 100 km/h in twelve seconds with a top speed of 160 km/h (99 mph). Three high pressure tanks made from carbon-fiber composite material can hold up to 4.2 kg of hydrogen. This provides an operating range of up to 320 kilometers (199 miles). Filling up with hydrogen only takes three minutes because of the 700-bar pressure technology.