College of Engineering and Physical Sciences, University of Wyoming, Laramie, Wyoming 82071, United States.
School of Energy Resources, University of Wyoming, Laramie, Wyoming 82071, United States.
Environ Sci Technol. 2024 Oct 22;58(42):18484-18495. doi: 10.1021/acs.est.4c04457. Epub 2024 Oct 9.
Hydrogen will potentially play a key role while transitioning to a net-zero economy. This study addresses resource, environmental, economic, policy, and societal issues related to low-carbon hydrogen production by steam methane reforming with carbon capture and storage in Wyoming and other natural-gas-rich states. For low-carbon hydrogen produced from natural gas and electricity supplies and which stores CO in saline reservoirs in Wyoming, the levelized cost of hydrogen (LCOH) ranges from $1.62-2.00/kg H, and the life cycle emissions range from 3.85-5.74 kg CO-eq/kg H. If claimed, the 45Q tax credit decreases the LCOH by 19%. Although the supplies of renewable natural gas feedstock and zero- or low-carbon electricity can lower the carbon footprint to make hydrogen projects qualified for the 45V tax credit, the 45Q tax credit is still a stronger economic incentive. To reduce the supply cost, a hydrogen cluster can be developed in the state by leveraging the colocation and coavailability of multiple natural resources and transport infrastructure. Developing a hydrogen cluster can directly create several thousand construction jobs and several hundred permanent jobs in Wyoming. Low-carbon hydrogen production can also be scaled up in other states across the nation.
在向净零经济转型的过程中,氢气将发挥关键作用。本研究针对怀俄明州和其他天然气资源丰富的州通过蒸汽甲烷重整结合碳捕集和封存生产低碳氢气所涉及的资源、环境、经济、政策和社会问题进行了探讨。对于由天然气和电力供应生产并将二氧化碳储存在怀俄明州盐水库中的低碳氢气而言,氢气的平准化成本(LCOH)在 1.62-2.00 美元/千克 H 之间,生命周期排放量在 3.85-5.74 千克 CO2-eq/千克 H 之间。如果申报,45Q 税收抵免可降低 19%的 LCOH。尽管可再生天然气原料和零碳或低碳电力的供应可以降低碳足迹,使氢气项目有资格获得 45V 税收抵免,但 45Q 税收抵免仍然是更强的经济激励。为了降低供应成本,可以通过利用多种自然资源和交通基础设施的共置和可用性在该州开发一个氢气集群。在怀俄明州开发一个氢气集群可以直接创造数千个建筑工作岗位和几百个永久工作岗位。低碳氢气生产也可以在全美其他州扩大规模。