This tool provides an indicative technical estimate of the §45V clean hydrogen production credit. It is not an official 45VH2-GREET determination and is not tax advice. The official carbon-intensity figure is established under the 45VH2-GREET model at the beginning of construction.
How the §45V screening works
The screening checks a US hydrogen project against the §45V clean hydrogen production tax credit: the deadline to begin construction, incrementality, temporal matching, deliverability and the lifecycle carbon intensity that sets the credit tier.
Each rule returns its outcome with its source in the final Treasury regulations, cited to Cornell LII. It is an indicative screening, not tax advice.
Frequently asked questions
Until when must construction begin?+
Before 1 January 2028, under the 2025 law that amended §45V (OBBBA). The screening checks this first.
Which carbon intensity qualifies?+
Up to 4.0 kg CO2e per kg of hydrogen over the life cycle, in four tiers: the lower the intensity, the higher the credit.
Does it apply to projects in Spain or Portugal?+
No. §45V is a United States tax credit. For a project in the EU, the relevant rules are the RFNBO criteria.