The US Department of the Treasury and the Internal Revenue Service have released final rules for the Section 45V Clean Hydrogen Production Tax Credit, allowing existing nuclear power plants to qualify for support in clean hydrogen projects. Initially, the rules proposed restrictions that would exclude most existing US clean energy generating capacity, including nuclear. However, the revised rules now include flexibilities that aim to spur industry growth, especially for projects planned as part of the US Department of Energy's Regional Clean Hydrogen Hubs program. The updated rules outline that electricity generation used for hydrogen production must be 'incremental' to existing capacity and introduce exceptions for nuclear plants at risk of retirement. These changes have been positively received by stakeholders in the industry, with Constellation, a key player in the sector, praising the move. The final rules are a result of intensive collaboration between various agencies and have been developed after considering extensive public feedback. The changes are seen as crucial for providing certainty to hydrogen producers and driving the US towards becoming a global leader in green hydrogen. The new regulations are expected to have a significant impact on projects like Constellation's plan to build the world's largest nuclear-powered clean hydrogen production facility at its LaSalle Clean Energy Center in Illinois.