Electrolyzers can use excess solar power to produce hydrogen. This can also help to stabilize distribution networks. A look at the wind industry shows the challenges to further commercialization, but one city in Germany offers an example of the implementation of this technology. A small tanker truck drives through villages on Germany's North Sea coast. A breeze blows in from the sea, rotating the turbines of a nearby wind farm as the car turns off into the yard of a dairy farm. But it is not here to collect milk. The tanker will be filled with hydrogen produced by an on-site electrolyzer, powered by electricity from the wind farm. It will supply hydrogen filling stations in nearby towns, where local buses and an increasing number of other vehicles refuel several times a week.
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