A Roadmap for Designing Hydrogen Projects for 45V Compliance

This report by RMI provides a strategic framework for hydrogen project developers to comply with the proposed 45V clean hydrogen production tax credit in the United States. It details the 'four pillars' of the Treasury's proposed guidance—regionality, hourly matching, incrementality, and attribute tradeability—and outlines an ecosystem of registries, contracts, and operational strategies needed to secure the highest credit tier of $3 per kg of hydrogen.

• The 45V tax credit's highest tier, valued at $3 per kg of hydrogen, requires electricity emissions to be below a threshold of 9 g CO2/kWh. Because average US grid emissions are approximately 370 g CO2/kWh, grid-connected projects must use a 'book and claim' system to retire qualifying Energy Attribute Certificates (EACs) to prove lower-than-average emissions.
• Compliance with the proposed 45V guidance relies on four 'pillars': Regionality (EACs must come from one of 15 Transmission Needs Regions), Hourly matching (clean electricity must be generated in the same hour it is consumed), Incrementality (power must come from facilities placed into service no more than 36 months before the hydrogen project), and Attribute tradeability (allowing hourly certificate trading).
• National Renewable Energy Laboratory modeling suggests that clean power buildout between 2025 and 2035 will be sufficient to provide the qualifying EACs needed for 200 gigawatts of hydrogen production facilities operating at 80 percent capacity across the US.
• While hourly registries are still maturing, RMI argues that the foundation exists within current grid operations. Developers can currently use existing registries to prevent double-counting, utilize meter data for matching, or use bilateral Power Purchase Agreements (PPAs). Companies such as Singularity and FlexiDao have developed products that could integrate into the GREET model for 45V qualification.
• To optimize economics and achieve hourly matching, developers should target utilization rates between 60% and 80%. This involves a balance where increasing contracted capacity increases hydrogen revenue but also increases curtailment costs, creating a 'U-shaped' cost curve.
• Electrolyzer operational constraints include ramping rates and minimum operation levels (typically 10% to 40% of nameplate capacity). To manage these, developers can use machine learning forecasting—such as Vaisala's algorithms with hour-ahead error bars of about 5%—to determine ramping and avoid EAC shortages.
• Strategic ramping can significantly reduce electricity costs; for instance, ramping down for only 3% of hours could potentially reduce the locational marginal price of electricity by up to 50% in markets like Texas.
• RMI recommends that the Treasury calculate credits for each hour separately for partial matching scenarios, similar to the EU methodology, to balance the incentive for clean production with real-world operational constraints.

APA

RMI (2024). A Roadmap for Designing Hydrogen Projects for 45V Compliance. https://rmi.org/resources/a-roadmap-for-designing-hydrogen-projects-for-45v-compliance/

Chicago

RMI. A Roadmap for Designing Hydrogen Projects for 45V Compliance. 2024. https://rmi.org/resources/a-roadmap-for-designing-hydrogen-projects-for-45v-compliance/.

Wikipedia

{{cite report |author=RMI |title=A Roadmap for Designing Hydrogen Projects for 45V Compliance |date=14 October 2024 |url=https://rmi.org/resources/a-roadmap-for-designing-hydrogen-projects-for-45v-compliance/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{rmi2024roadmap, author = {{RMI}}, title = {{A Roadmap for Designing Hydrogen Projects for 45V Compliance}}, institution = {RMI}, year = {2024}, month = oct, url = {https://rmi.org/resources/a-roadmap-for-designing-hydrogen-projects-for-45v-compliance/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }