1. Afc Energy Plc
2. Aisin Seiki Co. Ltd
3. Ballard Power Systems Inc.
4. Bloom Energy Corporation
5. Ceres Power Holdings Plc
6. Exxon Mobil Corporation
7. Fuel Cell Energy
Inc
8. General Electric Company (Ge)
9. Hitachi
Ltd
10. Hydrogenics Corporation
11. Panasonic Corporation
12. Plug Power Inc.
13. Sfc Energy Ag
14. Toshiba Corporation
15. Toyota Motor Corporation