Fuel cells enable the conversion of green hydrogen back into electricity with high efficiency and minimal environmental impact.

The basic structure of a fuel cell typically consists of an electrolyte sandwiched between two electrodes, the anode and the cathode. The most common type of fuel cell, known as a proton exchange membrane fuel cell (PEMFC), uses a solid polymer electrolyte membrane.

Their potential contribution to European policies in energy, climate change, environment, transport and industrial competitiveness is of great importance.