I would take a look at the MVTG board here on iHub. I think Ecomike is really dialed in - read his posts.
Also - take a look at the chart. SOMETHING is happening here (MVTG).
I own PLUG as the "now" for fuel cells and MVTG as the "later" follow-up. That said, MVTG's CO2 recovery technology (and attendant partnerships with LaFarge and Alstrom) might have more near to mid term potential. I like little companies with "big brothers'.