Section 45V: Four Tiers and a Hard Deadline

The Four Tiers

45V pays per kilogram of qualified clean hydrogen over a ten-year credit period, scaled by lifecycle carbon intensity measured well-to-gate under the 45VH2-GREET model:

Base rates are one fifth of these amounts where prevailing wage and apprenticeship are not met. Values are inflation-indexed; 2026 amounts per Notice 2026-41.

A facility that includes carbon capture equipment on which a 45Q credit is claimed cannot also claim 45V — capture-based projects elect whichever credit prices better.

The Three-Pillar Power Test

For electrolytic hydrogen, the tier is decided by how the electricity is counted. The final regulations allow projects to run the CI computation on purchased energy attribute certificates only where three conditions hold:

• Incrementality — the generator entered service within 36 months of the hydrogen facility, with alternative routes for uprates, restarted plants, at-risk nuclear, CCS retrofits, and grids with binding emissions caps (California and Washington).
• Deliverability — generator and electrolyser sit in the same transmission region.
• Time matching — annual matching through 2029, hourly from January 1, 2030 — the step that reshapes economics for projects running on variable renewables.

Renewable natural gas and biogas pathways phase into book-and-claim accounting under parallel rules. The version of 45VH2-GREET in effect when construction begins can generally be locked for the facility’s life — another reason the construction date is the master variable.

The OBBBA Deadline

OBBBA terminated 45V for facilities beginning construction after January 1, 2028 — five years earlier than the original 2033 window. The placed-in-service date is unconstrained; what matters is defensible beginning-of-construction evidence under the physical work test or the five percent cost safe harbor, plus continuity through completion.

Notably, 45V is absent from the FEOC lists: no material-assistance ratio, no claimant ban, no payment rule. Chinese electrolysers do not disqualify a project — a sourcing freedom no other major credit now enjoys, and one worth reflecting in procurement strategy while it lasts.

Monetisation and Stacking

Applicable entities take elective pay for all ten years; taxable producers may elect direct pay for the first five years of the credit period, then transfer under 6418 thereafter — the same hybrid pattern as 45Q and 45X. Hydrogen used on site, sold under offtake, or converted to ammonia all qualify, provided production and verification requirements are met by an unrelated third party.

Stacking runs wide: 45V sits alongside state programs and clean fuel standard credits — a California or BC LCFS pathway, or a Canadian CFR Compliance Category 2 pathway for cross-border molecules, can price on top of the federal credit, subject to each program’s own attribute accounting. The production credit pays per kilogram once; the fuel programmes pay again on carbon intensity every year the pathway holds — which is why hydrogen economics are modelled as a stack, never as a single credit, and why the CI file that sets the 45V tier is the same file the fuel regulators audit.