MIT Technology Review
Hydrogen has always been a fascinating potential substitute for fossil fuels. It burns cleanly and does not emit carbon dioxide. It’s energy dense, so it’s a great way to store electricity from renewable sources. and you can make liquid synthetic fuels to replace gasoline or diesel. So far, however, most of the hydrogen has been made from natural gas. The process is dirty and energy intensive.
The rapidly falling costs of solar and wind power mean that green hydrogen is now cheap enough to be practical. Just zap water with electricity and you have hydrogen. Europe is leading and starting to build the necessary infrastructure. Peter Fairley argues that such projects are only a first step towards a planned global network of electrolysis plants that run on solar and wind power and produce clean hydrogen.