The world's energy industry faces serious challenges. Conventional energy technologies have low efficiency, cause environmental damage, are unable to guarantee reliable power supply, and make many economies too dependent on imported oil and gas. Furthermore, the world's energy requirement will increase dramatically in the coming decades. In order to face these challenges, completely new energy technologies must be developed. Fuel cells are efficient, clean, reliable end user-friendly. They can produce power anywhere - in vehicles, portable devices, stationary power plants etc.