It depends on what your intent is; if it's that the technology has been around for a long time, that's not really adding much to the conversation. It would be l

It depends on what your intent is; if it's that the technology has been around for a long time, that's not really adding much to the conversation. It would be like saying that battery technology is centuries old, which is technically true, but meaningless in the context of advances being made in li-ion batteries today. If the intent is to say that fuel cell technology is mature and unlikely to significantly advance further -- which is how it's often presented on this topic in particular -- that just isn't true. SOFCs have only recently reached commercialization, and there are still gains to be had in, for example, manufacturing PCFCs, rSOCs, reducing platinum content of low-temperature (PEM) devices, etc. We're starting in the context of scaling up an industry, and all of the gains that brings.