It's magic, that's what it is . . . I do live in the future, after all . . . 
Wikipedia:  fuel cell .
Steam
 methane reforming produces (as far as I can gather) non-"Green" levels 
of carbon dioxide.  Also it takes energy to make the steam.  The wiki 
article on Fuel Cells contains this tidbit:  "The Department of Energy 
Solid State Energy Conversion Alliance found that, as of January 2011, 
stationary fuel cells generated power at approximately $724 to $775 per 
kilowatt installed. 
 In 2011, Bloom Energy, a major fuel cell supplier, said that its fuel 
cells generated power at 9–11 cents per kilowatt-hour, including the 
price of fuel, maintenance, and hardware."
I
 suspect that Bloom Energy is using a catalytic process instead -- 
either with platinum alone or -- more likely -- in some other (?) soup of (?) 
reducible metals (?) (ferric oxide, sulfur dioxide?) -- which would make the
 process patentable, more economical than pure platinum, and "Greener" 
to boot.
Time to buy stock in public fuel cell companies?  Or is it a scam?  The Wikipedia article contains this:  "...as of October 2013, no public company in the industry had yet become profitable."  Hmmm.
 

