Today, oil is one of the major energy sources in society, but as it is a nonrenewable resources, it will be over in one moment or another. For this reason, societies must find another energy source, and it must be a renewable source to avoid curren enviromental damage caused by oil. Hydrogen is regarded as one of the most promising resources for the near future, but before it can become an energy paradigm, hydrogen has to overcome some technological, economical and institucional barriers that are common in any paradigm-change process.