Hydrogen will ‘almost always’ lose out to battery-electric in German rail transport: train manufacturer
H2 and battery-powered train-maker Stadler warns that fuel cells need replacing every three years
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Steffan Obst, the head of German sales at Bussnang-based trainmaker Stadler, said that battery-electric models usually emerge victorious in technology-neutral tenders put out by German railway operators looking for low-carbon trains.
The primary reason for this is that railways in Central Europe are rarely less than 80km from a station with an overhead charging line, which can be used to charge the battery with 15,000 volts — 15 minutes of which is enough to power the train for a further 50-150km.
This effectively eliminates one of the main advantages of hydrogen trains, which can take on enough fuel in quarter of an hour to travel 500-600km, several times the length of most of the German branch-lines currently in need of decarbonisation.
“On most of the approximately 500 routes in Germany that are currently served with diesel, [batteries are] the more efficient and cheaper solution,” Obst observed. “These are usually between 40 and 80km long, which you can easily travel with a battery train.”
In addition, hydrogen fuel cells require significantly more maintenance than a batteries alone, requiring replacement within three years on average.
“Because of this and the hydrogen tank on board, the maintenance effort is of course more complex compared to battery trains,” Obst explained, adding that hydrogen trains also require a battery for back-up power.
Nevertheless, Stadler recently signed two framework agreements with Italian railway operators Azienda Regionale Sarda Trasporti (ARST) and Ferrovie della Calabria (FdC) to supply the world’s first hydrogen-powered narrow-gauge trains. Under the agreements, Stadler has promised to supply ten locomotives for ARST in Sardinia and 15 for FdC in Calabria.
“Think of the US,” he said. “There we sometimes have routes of several hundred kilometres. You can't do that with today's battery. Building battery trains with a range of more than 200km would not be economical at the moment.”
Stadler recently delivered its first hydrogen-powered train to the San Bernadino transport authority in California in the US, as part of a programme to introduce hydrogen trains on a nine-mile route by 2024.
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