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Open Access

Feasibility study of renewable e-methanol production: A substitution pathway from blue to green

Peiyang Li1Jin Lin1,2( )Zhipeng Yu1Yingtian Chi1Kai Zhao3
State Key Laboratory of Power System Operation and Control, Department of Electrical Engineering, Tsinghua University, Beijing 100087, China
Tsinghua-Sichuan Energy Internet Research Institute, Chengdu 610213, China
Beijing Representative Office of Methanol Institute, Beijing 100020, China
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Abstract

Producing renewable e-methanol from e-hydrogen and diverse carbon sources is an essential way for clean methanol preparation. Despite this, the technical and economic feasibility of different e-methanols has yet to be thoroughly compared, leaving the most promising pathway to achieve commercialization yet evident. This paper reports a preliminary analysis of the lifecycle greenhouse gas (GHG) emissions and costs of four renewable e-methanols with different carbon sources: bio-carbon, direct air capture (DAC), fossil fuel carbon capture (FFCC), and fossil. The results indicate that renewable e-methanol costs (4167−10250 CNY/tonne) 2−4 times the market rate of grey methanol. However, with the carbon tax and the projected decline in e-H2 costs, blue e-methanol may initially replace diesel in inland navigation, followed by a shift from heavy fuel oil (HFO) to green e-methanol in ocean shipping. Furthermore, the e-H2 cost and the availability of green carbon are vital factors affecting cost-effectiveness. A reduction in e-H2 cost from 2.1 CNY/Nm3 to 1.1 CNY/Nm3 resulting from a transition from an annual to a daily scheduling period, could lower e-methanol costs by 1200 to 2100 CNY. This paper also provides an in-depth discussion on the challenges and opportunities associated with the various green carbon sources.

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iEnergy
Pages 75-81
Cite this article:
Li P, Lin J, Yu Z, et al. Feasibility study of renewable e-methanol production: A substitution pathway from blue to green. iEnergy, 2024, 3(2): 75-81. https://doi.org/10.23919/IEN.2024.0013

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Received: 17 June 2024
Revised: 26 June 2024
Accepted: 26 June 2024
Published: 24 July 2024
© The author(s) 2024.

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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