The U.S. Treasury Department has finalized rules for the section 45V Clean Hydrogen Production Tax Credit, aiming to drive growth in the clean hydrogen industry. The tax credit provides a tiered approach to incentivize projects with lower emissions intensity. The primary debate surrounded the choice between hourly matching and annual matching emissions accounting for hydrogen production, with Treasury opting for the less restrictive annual matching until 2030. The rules also include provisions for nuclear plants, states with strict emissions caps, and power plants with CCS retrofits to qualify as 'incremental' electricity sources. The Biden Administration's support for clean hydrogen, highlighted by significant funding for hydrogen hubs, contrasts with uncertainties caused by the upcoming presidency of Donald Trump, who has been critical of hydrogen. The industry faces potential changes or repeals to the IRA with a Republican-majority Congress. Despite these uncertainties, the rules provide a framework for clean hydrogen growth while balancing environmental concerns with industry development.