$FCEL Ballard makes bus motors. Plug makes fork truck motors. Bloom has a faulty product which they tried to cover up with voodoo accounting and is embattled in lawsuits. FCEL has the tech to retrofit all existing and future power plants. They also have the tech to knock out much of the world's methane emissions which is 20X more potent than CO2. Like Steve Jobs once said when interviewing a Pepsi executive: "Do you want to make sugar-water for the rest of your life, or do you want to change the world."