Myopinion, I have several of those on my Alternative Energy list, but the fuel cell area has been a real dog for years. Ballard (BLDP) looks like the best chart-wise, they have proton exchange membrane type fuel cells and revenues of $70 mil, but still not profitable.
One conservative turnaround stock you might want to check out is Flowers Foods (FLO). There's an excellent chance it will recover once past the recent problems, but it's more of a buy/hold Warren Buffet type stock, not really a short term play. Solid dividend over 4% while you wait for the recovery.