Hydrogen fuel may be produces from renewable sources and produces little or no pollution; it has the potential to be a major transportation fuel in the future. Unfortunately, the energy requirements and/or costs of these hydrogen production systems have discouraged large scale use up to the present. For this situation to change it is important that we find inexpensive sources of electricity to split the water that covers our planet. Hopefully this electricity will be developed from renewable energy sources such as wind farms or photovoltaic arrays. One promising approach is to use hydrogen to produce electricity via fuel cells (see Energy Storage).

Browse our glossary of renewable energy terms or our list of hydrogen organizations for more information.