| Acumentrics Corporation https://www.acumentrics.com/ Develops and markets solid oxide fuel cell systems for power backup and distributed power generation. Company profile, product information, and technology overview. | |
| Cellkraft https://cellkraft.se/ A Swedish firm which develops, manufactures and markets PEM fuel cells for back-up and niche applications. Company profile and products. | |
| FuelCell Energy, Inc. https://www.fuelcellenergy.com/ Develops and markets carbonate fuel cell and advanced nickel zinc secondary battery. (Nasdaq: FCEL). | |
