Historically coal has played an important role in the industrialization process of Euskadi since the 19th century. Despite not having large reserves, large coal fields of Asturias and Leon (north Spain) provided a nearby and affordable power source. Following the introduction of IGCC technology, coal has become the most important primary energy source in Euskadi. In 2010 coal was the origen of 45% of the generated electricity and if we consider that most of the hydrogen used in fuel cells comes from IGCC plants, coal provides aprox. 60% of the total energy used in Euskadi.