Fuelcell Energy is now claiming their MCFC stack life is 5 yearsFuelcell Energy Service Agreement Brochure.  I think MTU abandoned their MCFC development for a while several years ago after they were sold by DaimlerChrysler.  This article should mention Fuelcell Energy somewhere as prominent in commercializing MCFCs. I am somewhat new to editing Wikipedia articles;  Can someone guide me on including this info and what constitutes proper external references?  Obviously, we don't want to rely on Fuelcell Energy's website.