French train-building company Alstom built two hydrogen-powered trains and delivered them to Germany last weekend, where they'll zoom along a 62-mile stretch of track that runs from the northern cities of Cuxhaven, Bremerhaven, Bremervörde, and Buxtehude. The new trains replace their diesel-powered counterparts and are the first of their kind, but they are likely not the last. Alstom is contracted to deliver 14 more hydrogen-powered trains, called Coradia iLint trains, before 2021.
The trains are an initial step toward lowering Germany's transportation-related emissions, a sector that has been intractable for policy makers in the country. But hydrogen fuel faces some chicken-and-egg-type problems. Namely, hydrogen is difficult to store, and making it a truly zero-emissions source of fuel requires renewable electricity to perform water electrolysis. The more common option for creating hydrogen fuel involves natural gas reforming, which is not a carbon-neutral process.
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