The US has upped the ante in the global quest to decarbonise the economy by mass producing clean hydrogen.

The Inflation Reduction Act became law on Aug. 7, providing $369 billion for energy and climate projects, including a subsidy of as much as $3/kg for clean hydrogen. The subsidy works on a sliding scale, so that the cleaner the end product, the bigger the tax credit it receives, starting at 60c/kg. That means support for a variety of clean hydrogen technologies, including blue, which is made by capturing the carbon dioxide produced during traditional production.