On January 3, 2025, the IRS and Treasury issued final regulations implementing the clean hydrogen production tax credit under Section 45V of the Internal Revenue Code. The regulations aim to define 'clean hydrogen' for tax purposes. They provide clarity on incrementality, temporal matching, and deliverability for hydrogen production projects. Key takeaways include pathways for meeting incrementality requirements, extension of transition periods for matching, and flexibility in defining regional boundaries. The regulations also address lifecycle GHG emissions calculations, safe harbor provisions, and the use of provisional emissions rates. Notably, the rules will apply to taxable years beginning after December 26, 2023. Additionally, methane- and RNG-based hydrogen regulations are discussed separately. The overall sentiment of the article is positive, highlighting the efforts to promote clean energy production and provide incentives for the hydrogen sector's growth.