While many people think first about hydrogen when they think of fuel cells, fuel cells are not limited to hydrogen. They are a set of related technologies, many of which can generate electricity from a number of hydrocarbon fuels rather than hydrogen. I limited my recent post on the rapid rise of hydrogen stocks to just US-listed companies involved in the production and use of hydrogen, leaving out foreign stocks and other fuel cell technologies for brevity.
In my research for that article, however, I came across fully ten publicly traded companies involved with either hydrogen or other types of fuel cells. Here they are, along with descriptions of the technologies drawn from the Department of Energy and company websites.