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Summary of Incentives for Clean Hydrogen Production in the Inflation Reduction Act

Introduction

Alan Krupnick and Aaron Bergman analyzed the Inflation Reduction Act (IRA) tax credits aimed at promoting clean hydrogen production to support decarbonization. The report examines how these incentives impact costs and emissions, with key provisions including a new tax credit (§45V) for low-emission hydrogen and an enhanced credit (§45Q) for carbon sequestration. These policies aim to foster hydrogen deployment, particularly in hard-to-abate sectors like industry and transport, despite high implicit carbon prices that suggest potential economic inefficiency.

Hydrogen Production Background

Clean hydrogen can be produced from hydrocarbons (e.g., steam methane reforming, autothermal reforming, gasification) or water via electrolysis. Hydrocarbon methods involve methane and natural gas, leading to high lifecycle emissions, while electrolysis avoids direct emissions but depends heavily on electricity sources. The IRA's tax credits encourage low-emission production by tying subsidies to lifecycle carbon emissions.

Tax Credit Changes in the IRA

• 45V Tax Credit: Subsidizes "clean" hydrogen via production (PTC) or investment tax credits (ITC), with values based on lifecycle greenhouse gas emissions. Lower emissions qualify for higher credits (e.g., $3/kg H for very low emissions).
• 45Q Tax Credit: Increased to $85/tonne for sequestered CO₂, aiding "blue" hydrogen via carbon capture and storage. Credits reward sequestration quantity, not emission reduction, potentially leading to perverse incentives.

Impact on Hydrogen Costs and Emissions

The tax credits reduce the cost gap between clean hydrogen and high-emission alternatives. Under current models:

• Natural gas-based hydrogen (e.g., SMR with CCS) competes with traditional SMR without CCS under 45Q subsidies.
• Electrolysis hydrogen requires very clean electricity to qualify for high 45V credits; with renewable power purchase agreements (PPAs), it can be competitive, but high electricity costs remain a barrier.
  Implicit carbon prices range widely (e.g., $84–$374/tonne CO₂), often exceeding the federal social cost of carbon but justified by technology spillovers and future cost reductions.

Sensitivities and Competitiveness

Competitiveness depends on methane leakage rates, grid carbon intensity, and fuel/prices:

• Higher leakage or emissions increase reliance on subsidies for cleaner options.
• Electrolyzers with low emissions and cheap PPA electricity show promise but struggle with steady output needs.
  Breakeven analyses indicate that capital costs and evolving electricity markets could lower hydrogen costs over time, but short-term deployment faces electricity price and emission challenges.

Broader Implications

The IRA and Infrastructure Investment and Jobs Act funding support a "national clean hydrogen network" to expand hydrogen use in industrial and transport sectors. While tax credits make clean hydrogen viable in current applications, incentives may not drive new uses quickly without supportive policies. Long-term success depends on electrolyzer cost declines and grid decarbonization, with potential integration issues for storage and transport.