I wonder if the stronger use case will be putting trains on preexisting tracks that might not already have the overhead space for overhead lines along the entire track. I’m guessing that it’s far easier to electrify as you’re building than to retrofit a line.

I looked this up and found this article. Sounds like Germany just opened a line as well, though it looks like it’s more of an interurban line so the headline is technically correct about China being first for an urban train. It sounds like Germany thinks the sweet spot for hydrogen is lines that don’t get heavy use. My guess is that the locomotives would cost more, but if fewer are running per track-mile that would be justified over the cost of electrification of the line.